Nuclear hyperdeformation and the Jacobi shape transition
N. Schunck, J. Dudek, and B. Herskind
The possibility that atomic nuclei possess stable, extremely elongated (hyperdeformed) shapes at very high angular momentum is investigated in the light of the most recent experimental results. The crucial role of the Jacobi shape transitions for the population of hyperdeformed states is discussed a ... [Phys. Rev. C 75, 054304 (2007)] published Thu May 3, 2007.
Pairing phase transitions in nuclear wave functions
Mihai Horoi and Vladimir Zelevinsky
The exact solution of the nuclear shell model is used for studying the phase transition from superfluid to normal Fermi-liquid as a function of the pairing strength, excitation energy (or temperature), nuclear spin and the presence of other types of residual interactions. The phase transition in a f ... [Phys. Rev. C 75, 054303 (2007)] published Thu May 3, 2007.
Neutron transfer reactions induced by [sup 8]Li on [sup 9]Be
V. Guimaraes, R. Lichtenthaler, O. Camargo, A. Barioni, M. Assuncao et al.
Angular distributions for the elastic scattering of [sup 8]Li on [sup 9]Be and the neutron transfer reactions [sup 9]Be([sup 8]Li,[sup 7]Li)[sup 10]Be and [sup 9]Be([sup 8]Li,[sup 9]Li)[sup 8]Be were measured with a 27 MeV [sup 8]Li radioactive nuclear beam. Spectr- oscopic factors for [sup 8]Li [di ... [Phys. Rev. C 75, 054602 (2007)] published Thu May 3, 2007.
Pair correlations in nuclei involved in neutrinoless double beta decay: [sup 76]Ge and [sup 76]Se
S. J. Freeman, J. P. Schiffer, A. C. C. Villari, J. A. Clark, C. Deibel et al.
Precision measurements were carried out to test the similarities between the ground states of [sup 76]Ge and [sup 76]Se. The extent to which these two nuclei can be characterized as consisting of correlated pairs of neutrons in a BCS-like ground state was studied. The pair removal (p,t) reaction was ... [Phys. Rev. C 75, 051301 (2007)] published Thu May 3, 2007.
Proposal for a Quantum-Degenerate Electron Source
M. Zolotorev, E. D. Commins, and F. Sannibale
We propose a pulsed electron source capable of 6D brightness orders-of-magnitude greater than that of existing sources. It could deliver average current up to 0.5 pA and achieve an emittance approaching the quantum limit in each spatial dimension. It could be employed to advantage in electron micros ... [Phys. Rev. Lett. 98, 184801 (2007)] published Thu May 3, 2007.
Measurement of Tensor Analyzing Powers in Deuteron Photodisintegration
I. A. Rachek, L. M. Barkov, S. L. Belostotsky, V. F. Dmitriev, M. V. Dyug et al.
A new accurate measurement of the tensor analyzing powers T[sub 20], T[sub 21], and T[sub 22] in deuteron photodisintegration has been performed. Wide-aperture nonmagnetic detectors allowed broad kinematic coverage in a single set up: E[sub gamma]=25 to 600 MeV, and theta[sub p][sup cm]=24 degrees ... [Phys. Rev. Lett. 98, 182303 (2007)] published Thu May 3, 2007.
Precision mass measurements of rare isotopes near N = Z = 33 produced by fast beam fragmentation
P. Schury, C. Bachelet, M. Block, G. Bollen, D. A. Davies et al.
Mass measurements of [sup 63,64]Ga, [sup 64,65,66]Ge, [sup 66,67,68]As and [sup 69]Se performed at the LEBIT facility at the NSCL by Penning trap mass spectrometry are presented. The rare isotopes were produced by fast beam fragmentation and in-flight separation, then converted to a low energy beam ... [Phys. Rev. C 75, 055801 (2007)] published Wed May 2, 2007.
Prompt fission neutron emission in neutron and proton induced reactions at intermediate energies
V. A. Rubchenya
The generalized model for the description of the prompt fission neutron spectra and multiplicities at neutron and proton energies up to about 100 MeV is described. The three main emission mechanisms considered are the precompound emission, the pre-scission particle evaporation before the saddle poin ... [Phys. Rev. C 75, 054601 (2007)] published Wed May 2, 2007.
Momentum distributions and spectroscopic factors of doubly closed shell nuclei in correlated basis function theory
C. Bisconti, F. Arias de Saavedra, and G. Co'
The momentum distributions, natural orbits, spectroscopic factors, and quasihole wave functions of the [sup 12]C, [sup 16]O, [sup 40]Ca, [sup 48]Ca, and [sup 208]Pb doubly closed shell nuclei have been calculated in the framework of the correlated basis function theory, by using the Fermi hypernette ... [Phys. Rev. C 75, 054302 (2007)] published Wed May 2, 2007.
Synthetic single crystal diamond as a fission reactor neutron flux monitor
Marco Marinelli, E. Milani, G. Prestopino, A. Tucciarone, C. Verona et al.
Thermal neutron flux monitors were fabricated using chemical vapor deposited single crystal diamond in a p-type/intrinsic/metal/[sup 6]LiF layered structure. They were placed 80 cm above the core midplane of a 1 MW research fission reactor, where the maximum neutron flux is 2.2 x 10[sup 9] neutro ... [Appl. Phys. Lett. 90, 183509 (2007)] published Tue May 1, 2007.
Effective degrees of freedom and gluon condensation in the high temperature deconfined phase
P. Castorina and M. Mannarelli
The equation of state and the properties of matter in the high temperature deconfined phase are analyzed by a quasiparticle approach for T>1.2T[sub c]. In order to fix the parameters of our model we employ the lattice QCD data of energy density and pressure. First we consider the pure SU(3) gluon pl ... [Phys. Rev. C 75, 054901 (2007)] published Tue May 1, 2007.
Folding description of the fine structure of alpha decay to 2[sup +] vibrational and transitional states
S. Peltonen, D. S. Delion, and J. Suhonen
We analyze alpha-decays to ground and 2[sup +] vibrational states in even-even nuclei by using a coupled channels formalism. The alpha-nucleus interaction is simulated by a double folding procedure using M3Y plus Coulomb two-body forces. Collective excitations are described by vibrations of the nucl ... [Phys. Rev. C 75, 054301 (2007)] published Tue May 1, 2007.
Recoil-Proton Polarization in High-Energy Deuteron Photodisintegration with Circularly Polarized Photons
X. Jiang, J. Arrington, F. Benmokhtar, A. Camsonne, J. P. Chen et al. Jefferson Lab Hall A Collaboration
We measured the angular dependence of the three recoil-proton polarization components in two-body photodisintegration of the deuteron at a photon energy of 2 GeV. These new data provide a benchmark for calculations based on quantum chromodynamics. Two of the five existing models have made prediction ... [Phys. Rev. Lett. 98, 182302 (2007)] published Tue May 1, 2007.
Proposed Design Criterion for Vessel Lifting Lugs in Lieu of ASME B30.20
Dennis K. Williams
This paper describes a method for evaluating the structural adequacy of various lifting lugs utilized in the erection and up righting of large pressure vessels. In addition, the analysis techniques are described in detail and design guidelines for vessel lifting are tendered. The statutory and provi ... [J. Pressure Vessel Technol. 129, 326 (2007)] published Tue May 1, 2007.
Steady-State Thermal Simulation of Weld Applied to a Practical Axisymmetric Weldment
Ken Uchida, Rie Sumiya, Tadashi Murofushi, and Masakazu Jimbo
Steady-state Eulerian analysis on thermal simulation of welds using moving coordinates is known as a very computationally efficient method. This paper presents a method of Eulerian analysis that uses commercial computational fluid dynamics code. In order to show the practical availability of the Eul ... [J. Pressure Vessel Technol. 129, 262 (2007)] published Tue May 1, 2007.
Publisher's Note: High-spin lifetime measurements in the N = Z nucleus [sup 72]Kr [Phys. Rev. C 75, 041301(R) (2007)]
C. Andreoiu, C. E. Svensson, A. V. Afanasjev, R. A. E. Austin, M. P. Carpenter et al.
... [Phys. Rev. C 75, 049901 (2007)] published Mon Apr 30, 2007.
Modeling Bose-Einstein correlations via elementary emitting cells
Oleg Utyuzh, Grzegorz Wilk, and Zbigniew Wlodarczyk
We propose a method of numerical modeling Bose-Einstein correlations by using the notion of the elementary emitting cell (EEC). They are intermediary objects containing identical bosons and are supposed to be produced independently during the hadronization process. Only bosons in the EEC, which repr ... [Phys. Rev. D 75, 074030 (2007)] published Mon Apr 30, 2007.
Spectral Convexity for Attractive SU(2N) Fermions
Dean Lee
We prove a general theorem on spectral convexity with respect to particle number for 2N degenerate components of fermions. The number of spatial dimensions is arbitrary, and the system may be uniform or constrained by an external potential. We assume only that the interactions are governed by an SU( ... [Phys. Rev. Lett. 98, 182501 (2007)] published Mon Apr 30, 2007.
Determination of the nu[sub e] and total [sup 8]B solar neutrino fluxes using the Sudbury Neutrino Observatory Phase I data set
B. Aharmim, Q. R. Ahmad, S. N. Ahmed, R. C. Allen, T. C. Andersen et al. SNO Collaboration
This article provides the complete description of results from the Phase I data set of the Sudbury Neutrino Observatory (SNO). The Phase I data set is based on a 0.65 kiloton-year exposure of [sup 2]H[sub 2]O (in the following denoted as D[sub 2]O) to the solar [sup 8]B neutrino flux. Included here ... [Phys. Rev. C 75, 045502 (2007)] published Fri Apr 27, 2007.
Collisional energy loss of nonasymptotic jets in a quark-gluon plasma
A. Adil, M. Gyulassy, W. Horowitz, and S. Wicks
We calculate the collisional energy loss suffered by a heavy (charm) quark created at a finite time within a quark-gluon plasma in the classical linear response formalism as in Peigne et al. [J. High Energy Phys. 04 (2006) 011]. We pay close attention to the problem of formulating a suitable current ... [Phys. Rev. C 75, 044906 (2007)] published Fri Apr 27, 2007.
Sub-Barrier Coulomb Excitation of [sup 110]Sn and Its Implications for the [sup 100]Sn Shell Closure
J. Cederkall, A. Ekstrom, C. Fahlander, A. M. Hurst, M. Hjorth-Jensen et al.
The first excited 2[sup +] state of the unstable isotope [sup 110]Sn has been studied in safe Coulomb excitation at 2.82 MeV/u using the MINIBALL array at the REX-ISOLDE post accelerator at CERN. This is the first measurement of the reduced transition probability of this state using this method for ... [Phys. Rev. Lett. 98, 172501 (2007)] published Fri Apr 27, 2007.
Shear Viscosity in Weakly Coupled N = 4 Super Yang-Mills Theory Compared to QCD
Simon C. Huot, Sangyong Jeon, and Guy D. Moore
We compute the shear viscosity of weakly coupled [script N]=4 supersymmetric Yang-Mills theory. Our result for eta/s, the viscosity to entropy-density ratio, is many times smaller than the corresponding weak-coupling result in QCD. This suggests that eta/s of QCD near the transition point is several ... [Phys. Rev. Lett. 98, 172303 (2007)] published Fri Apr 27, 2007.
Toward precision measurements in solar neutrinos
Wei Liao
We present a precise analytic description of the neutrino conversion in the context of LMA MSW solution of the solar neutrino problem. Using the adiabatic perturbation theory we derive an analytic formula for the nu[sub e] survival probability which takes into account the non-adiabatic corrections a ... [AIP Conf. Proc. 903, 275 (2007)] published Fri Apr 27, 2007.
BBN And The CBR Probe The Early Universe
Gary Steigman
Big Bang Nucleosynthesis (BBN) and the Cosmic Background Radiation (CBR) provide complementary probes of the early evolution of the Universe and of its particle content. Neutrinos play important roles in both cases, influencing the primordial abundances of the nuclides produced by BBN during the fir ... [AIP Conf. Proc. 903, 40 (2007)] published Fri Apr 27, 2007.
Mosses beta radioactivity in Katirli mountain-Bursa, TURKEY
A. G. Kahraman, G. Kaynak, G. Akkaya, A. Gultekin, O. Gurler et al.
Mosses are one of the most widely used procedures to determine via plant of radioactive contamination. The high concentrating capacity of mosses may be used as bioindicator of environmental radioactive contamination. In this study, the mosses were collected in region of Katirli Mountain in northwest ... [AIP Conf. Proc. 899, 737 (2007)] published Fri Apr 27, 2007.
Present Status of the TAC Proton Accelerator Proposal
B. Akkus, P. S. Bilgin, A. Caliskan, S. Sultansoy, and M. Yilmaz
Recently, conceptual design of the Turkic Accelerator Center (TAC) proposal was completed. The main goal of this proposal is a charm factory that consist of a linac-ring type electron-positron collider. In addition, synchrotron radiation from the positron ring, free electron laser from the electron ... [AIP Conf. Proc. 899, 576 (2007)] published Fri Apr 27, 2007.
Jet Trigger in the H1 Experiment at HERA
Ana Dubak
A novel calorimeter trigger at the first level is developed to complement existing LAr trigger in the H1 experiment at HERA. It searches for localised energy depositions in the calorimeter, thus avoiding summing up noise distributed over large parts of the calorimeter. This will improve the efficien ... [AIP Conf. Proc. 899, 573 (2007)] published Fri Apr 27, 2007.
Calculation of Effective Beam Energy Depending on the Target Thickness in Applications of Nuclear Astrophysics
S. Kutlu, R. T. Guray, N. Ozkan, and C. Yalcin
In nuclear astrophysical applications of non-resonant nuclear reactions with thin targets, although changes in many parameters depending on the target thickness are neglected, the decrease in the beam energy through the target could be important. Since the cross section changes with energy, it is cr ... [AIP Conf. Proc. 899, 547 (2007)] published Fri Apr 27, 2007.
Comparison of the E(5) Critical Point Symmetry to the gamma-Rigid Solution of The Bohr Hamiltonian for gamma = 30[degree]
D. Bonatsos, D. Lenis, D. Petrellis, P. A. Terziev, and I. Yigitoglu
A gamma-rigid solution of the Bohr Hamiltonian for gamma=30 degrees is derived. Bohr Hamiltonians beta-part being related to the second order Casimir operator of the Euclidean algebra E(4). The solution is called Z(4) since it is corresponds to the Z(5) model with the gamma variable frozen. Paramet ... [AIP Conf. Proc. 899, 545 (2007)] published Fri Apr 27, 2007.
Investigation Of The Magnetic Dipole Moments Of The I[sup pi ]K = 1[sup + ]1 States In The Even-Even Deformed Nuclei
Hakan Yakut, Ali Kuliev, Ekber Guliyev, and Mehmet Bektasoglu
This study focuses on the investigation of the magnetic dipole moments of the excited I[sup pi]K = 1[sup +]1 states in the even-even deformed nuclei in the framework of the Quasi-particle Random Phase Approximation (QRPA). An analytic expression for the magnetic dipole moments of the states known to ... [AIP Conf. Proc. 899, 544 (2007)] published Fri Apr 27, 2007.
Real-Time Technique for Radical Suppression of Background Products in Heavy-Ion Induced Nuclear Reactions
Yu. S. Tsyganov
The detection system of the Dubna Gas Filled Recoil Separator (DGFRS) is briefly reviewed. Application of a PC-based real-time algorithm for the extraction of recoil-alpha energy-time-position correlation sequences in a real-time mode provides a possibility of radical suppression of background produ ... [AIP Conf. Proc. 899, 542 (2007)] published Fri Apr 27, 2007.
Interplay Of Mean Field And Individual Nucleon Collisions Effects At Intermediate Energy Heavy Ion Reactions
K. Subotić, D. Jordanov, M. urašević, D. Dragosavac, and B. Grabež
In our study of the reaction [sup 20]Ne+[sup 27]Al at energy of 84 A MeV, the track detectors were used to select the target like fragments arising from processes in which the interacting system becomes disintegrated into a large number of constituent nucleons and one massive fragment. Heavy ion rea ... [AIP Conf. Proc. 899, 541 (2007)] published Fri Apr 27, 2007.
Determination of the Astrophysical S-factor Near Zero Energy
Okan Ozer and Mustafa Yilmaz
The astrophysical S-factor for radiative-capture reactions is reviewed at zero energy in the simplified potential models since the determination of reaction rates in astrophysics requires accurate values of radiative-capture cross sections at very low energy values. The Taylor expansion of the astro ... [AIP Conf. Proc. 899, 537 (2007)] published Fri Apr 27, 2007.
Level Density In Interacting Boson-Fermion-Fermion Model (IBFFM) Of The Odd-Odd Nucleus [sup 196]Au
Skender Kabashi and Sadik Bekteshi
The level density of the odd-odd nucleus [sup 196]Au is investigated in the interacting boson-fermion-fermion model (IBFFM) which accounts for collectivity and complex interaction between quasiparticle and collective modes.The IBFFM total level density is fitted by Gaussian and its tail is also fitt ... [AIP Conf. Proc. 899, 535 (2007)] published Fri Apr 27, 2007.
The [sup 4]He(gamma,n) Reaction: A Test for Charge symmetry of Nuclear Force
I. Akkurt gamma,n) group at Maxlab
The charge symmetry which is one of the most important characteristics of the nuclear force, implies sigma[sub (gamma,p)]/sigma[sub (gamma,n)]= ~ 1.1 in the GDR range, with the slight deviation from unity being due to the contributions of the coulomb interaction. The [sup 4]H(gamma,n) reaction have ... [AIP Conf. Proc. 899, 534 (2007)] published Fri Apr 27, 2007.
Investigation of radiation Shielding Properties of of Some Building Materials
I. Akkurt, B. Mavi, H. Akyildirim, S. Kilincarslan, and C. Basyigit
The radiation shielding properties of different types of building materials were investigated against gamma-radiation. (C)2007 American Institute of Physics ... [AIP Conf. Proc. 899, 533 (2007)] published Fri Apr 27, 2007.
PRISMA Spectrometer EVR Spectra And Collection Efficiencies In Gas-Filled Mode
D. R. Dragosavac, P. N. Ujić, F. Scarlassara, and K. M. Subotić
In order to study nuclear fusion reaction, the heavy-ion magnetic spectrometer PRISMA installed at INFN Legnaro is planned to be modified to work in Gas-Filled Mode. For that purpose, the possible response of the spectrometer will be examined in Rutherford scattering experiments which simulate the f ... [AIP Conf. Proc. 899, 532 (2007)] published Fri Apr 27, 2007.
Interaction of High-Energy Proton Beam with a Thin Target and Multiplicities of Neutron
I. Demirkol, A. Arasoglu, E. Tel, M. Tatar, and M. S. Safak
An important ingredient in the performance of accelerator driven systems for energy production, waste transmutation and other applications are the number of spallation neutrons produced per incident proton. The neutron multiplicities, angular and energy distributions are usually calculated using sim ... [AIP Conf. Proc. 899, 531 (2007)] published Fri Apr 27, 2007.
Differential Cross-Section Calculations for Pre-Equilibrium Emission and Analysis of Experimental Data for [sup 208]Pb
I. Demirkol
In this study, neutron-emission spectra produced by (n,xn) reactions on nuclei [sup 208]Pb have been calculated. Angle-integrated cross sections in neutron induced reactions on targets [sup 208]Pb have been calculated at the bombarding energies from 3 MeV to 20 MeV. We have investigated multiple pre ... [AIP Conf. Proc. 899, 530 (2007)] published Fri Apr 27, 2007.
Estimation of Some Parameters from Morse-Morse-Spline-Van Der Waals Intermolecular Potential
I. Coroiu
Some parameters such as transport cross-sections and isotopic thermal diffusion factor have been calculated from an improved intermolecular potential, Morse-Morse-Spline-van der Waals (MMSV) potential proposed by R.A. Aziz et al. The treatment was completely classical and no corrections for quantum ... [AIP Conf. Proc. 899, 529 (2007)] published Fri Apr 27, 2007.
Two-Neutron Separation Energies Of Even-Even Rare-Earth Neutron-Rich Nuclei
N. Benhamouda, N. H. Allal, M. Fellah, and M. R. Oudih
The variation of the two-neutron separation energy (S[sub 2N]), as a function of N, is studied using a microscopic model that includes the pairing effects rigorously within the Fixed-Sharp-BCS method. The model has been tested for ordinary nuclei and has correctly reproduced the experimental data. T ... [AIP Conf. Proc. 899, 527 (2007)] published Fri Apr 27, 2007.
A Parameter Optimization for a National SASE FEL Facility
O. Yavas and S. Yigit
The parameter optimization for a national SASE FEL facility was studied. Turkish State Planing Organization (DPT) gave financial support as an inter-universities project to begin technical design studies and test facility of National Accelerator Complex starting from 2006. In addition to a particle ... [AIP Conf. Proc. 899, 299 (2007)] published Fri Apr 27, 2007.
A Testing Setup for the Quality Control Measurements of Phototubes for CMS-CASTOR Calorimeter
Isa Dumanoglu, Gulsen Onengut, and Kenan Sogut
The CMS-CASTOR calorimeter is designed to study the very forward, baryon-rich region in heavy ion collisions. Together with ZDC, it will make possible the covering of almost the whole angular region for CMS. CASTOR consists of quartz plates in a heavy metal matrix. Cherenkov light produced in the qu ... [AIP Conf. Proc. 899, 221 (2007)] published Fri Apr 27, 2007.
The Status of Turkish Accelerator Center Test Facility
O. Yavas TAC Collaboration
Recently, conceptual design of Turkic Accelerator Center (TAC) proposal was completed. Main goal of this proposal is a charm factory that consists of a linac-ring type electron-positron collider. In addition, synchrotron radiation from the positron ring and free electron laser from the electron lina ... [AIP Conf. Proc. 899, 213 (2007)] published Fri Apr 27, 2007.
Fluctuations in Avalanche Photodiode Structure
Fatma Kocak and Ilhan Tapan
The number of primary photo-electrons and the excess noise factor of the Avalanche photodiode (APD) are important parameters for the energy resolution of the crystal-APD system. In the present paper, the mean signal value and its fluctuations have been investigated for the well defined silicon Hamam ... [AIP Conf. Proc. 899, 201 (2007)] published Fri Apr 27, 2007.
Cosmic tests of the ATLAS Semi-Conductor Tracker Barrels
Bilge M. Demirkoz ATLAS SCT Collaboration
The central inner detector of ATLAS consists of the Pixel tracker, the SemiConductor Tracker (SCT) and the Transition Radiation Tracker(TRT). The SCT modules have been tested at several stages from module production to integration with the TRT. The module noise average per channel has been stable an ... [AIP Conf. Proc. 899, 193 (2007)] published Fri Apr 27, 2007.
Analytical Expression For The Luminosity of Gamma-p Colliders
A. K. Ciftci, H. Aksakal, and Z. Nergiz
Two linear accelerator projects CLIC (Compact Linear Collider) and ILC (International Linear Collider) with LHC (Large Hadron Collider) project offer a big opportunity to build gammap collider. In the gammap collider, high energy gamma photons are produced by the Compton backscattering of the laser ... [AIP Conf. Proc. 899, 183 (2007)] published Fri Apr 27, 2007.
A First Test of the E(5/4) Bose-Fermi Symmetry : [sup 135]Ba
R. B. Cakirli, M. S. Fetea, R. F. Casten, D. D. Warner, E. A. McCutchan et al.
There has been intense recent interest in equilibrium shape / phase transitions in nuclei and the concept of critical point symmetries to describe them. The first critical point symmetry for an odd-mass nucleus has been recently proposed, namely, the E(5/4) Bose-Fermi critical point symmetry, it cor ... [AIP Conf. Proc. 899, 99 (2007)] published Fri Apr 27, 2007.
The [sup 210]Pb Bremsstrahlung In The Background Of Lead Shields
D. Mrdja, I. Bikit, J. Slivka, and M. Vesković
Contemporary theories of dark matter predict that weakly interacting massive particles interact with matter by nuclear recoils leaving in the detector energies up 50 keV. The bremsstrahlung of [sup 210]Pb contributes to this spectral region. The 46.5 keV gamma intensity of [sup 210]Pb in the backgro ... [AIP Conf. Proc. 899, 97 (2007)] published Fri Apr 27, 2007.
Extended Locus of Regular Nuclei
L. Amon and R. F. Casten
A new family of IBM Hamiltonians, characterized by certain parameter values, was found about 15 years ago by Alhassid and Whelan to display almost regular dynamics, and yet these solutions to the IBM do not belong to any of the known dynamical symmetry limits (vibrational, rotational and gamma unst ... [AIP Conf. Proc. 899, 91 (2007)] published Fri Apr 27, 2007.
Turkic Contributions To The CLIC Project
A. K. Ciftci
Turkic group has been a collaborator of CLIC project of CERN since mid-2004. Since then, the group has been contributing CLIC study efforts on: impact of beam dynamics issues on CLIC Physics potential, CLIC*LHC interface (QCD Explorer, ep, gammap, eA and gammaA colliding options and FEL gamma Nucleu ... [AIP Conf. Proc. 899, 181 (2007)] published Fri Apr 27, 2007.
The Fermi And Gamov-Teller beta-Decay Excitations Of The Scissors Mode 1[sup + ] States
Z. Yildirm, F. Ertugral, E. Guliyev, and A. A. Kuliev
In this study, the allowed Gamov-Teller (GT) and Fermi beta transitions from 1[sup +]-state of the odd-odd nuclei to 1[sup +]-states are considered. Calculation of the beta transition matrix elements is performed in the phonon description and an analytical expressions for M[sub F] and M[sub GT] matr ... [AIP Conf. Proc. 899, 125 (2007)] published Fri Apr 27, 2007.
An Exactly Separable gamma-Rigid Version of The X(5) Critical Point Symmetry
D. Bonatsos, D. Lenis, D. Petrellis, P. A. Terziev, and I. Yigitoglu
A gamma-rigid version (with gamma=0) of the X(5) critical point symmetry is constructed. The model, to be called X(3) since it is proved to cointain three degrees of freedom, utilizes an infinite well potential, is based on exact separation of variables, and leads to parameter free (up to overall sc ... [AIP Conf. Proc. 899, 123 (2007)] published Fri Apr 27, 2007.
Calculation of Extrapolation Distances by Low Order Chebyshev Polynomial Approximation of Transport Equation in Slab Geometry
F. Yasa
In this work the problem of extrapolation distances has been studied in one-speed neutron transport equation with isotropic scattering by using the Chebyshev polynomial approximation which is called T[sub N] method. Assuming neutrons of one speed, extrapolation distances are calculated for the unifo ... [AIP Conf. Proc. 899, 121 (2007)] published Fri Apr 27, 2007.
Diffusion Coefficient Calculations With Low Order Legendre Polynomial and Chebyshev Polynomial Approximation for the Transport Equation in Spherical Geometry
F. Yasa, F. Anli, and S. Gungor
We present analytical calculations of spherically symmetric radioactive transfer and neutron transport using a hypothesis of P[sub 1] and T[sub 1] low order polynomial approximation for diffusion coefficient D. Transport equation in spherical geometry is considered as the pseudo slab equation. The v ... [AIP Conf. Proc. 899, 119 (2007)] published Fri Apr 27, 2007.
Simple Interpretation of Proton-Neutron Interactions in Rare Earth Nuclei
Y. Oktem, R. B. Cakirli, R. F. Casten, R. J. Casperson, and D. S. Brenner
Empirical values of the average interactions of the last two protons and last two neutrons, deltaV[sub pn], which can be obtained from double differences of binding energies, provide significant information about nuclear structure. Studies of deltaV[sub pn] showed striking behavior across major shel ... [AIP Conf. Proc. 899, 117 (2007)] published Fri Apr 27, 2007.
Examination of the alpha + [sup 12]C Reaction at E[sub LAB] = 13 MeV by Using a Modified Optical Potential
Yasemin Kucuk and Ismail Boztosun
We have analyzed the elastic scattering angular distributions data of the alpha+[sup 12]C reaction at 13 MeV in the laboratory system within the framework of the optical model formalism. It is well known that the description of the experimental data at low energies is a long-standing problem of this ... [AIP Conf. Proc. 899, 115 (2007)] published Fri Apr 27, 2007.
Two Particle Azimuthal Correlations in C + Ta Collisions at 4.2A GeV
Lj. Simić and O. Jotanović
In this report we present study of two particle azimuthal correlations for protons and negative pions in 4.2A GeV C+Ta collisions. Obtained results are compared with the analysis of azimuthal distribution of particles with respect to the reaction plane. (C)2007 American Institute of Physics ... [AIP Conf. Proc. 899, 113 (2007)] published Fri Apr 27, 2007.
A Systematic Study in the Region of N = 86--98
E. Ganioglu and R. Wyss
In this work a systematic study was performed in the region of N=8698 by means of Total Routhian Surface (TRS) calculations. TRS calculations are based on Woods-Saxon potential in the framework of cranked shell model (CSM) and Bogolyubov-Strutinsky approach. The deformed mean field is capable of mak ... [AIP Conf. Proc. 899, 111 (2007)] published Fri Apr 27, 2007.
Low Lying Magnetic and Electric Dipole Strength Distribution in the Even-Even [sup 164--170]Er
F. Ertugral, E. Guliyev, and A. A. Kuliev
Quasiparticle random-phase approximation calculations, where rotational and translational invariance are restored selfconsistently by using separable effective forces, are presented for the ground state dipole response in the even-even [sup 164170]Er isotopes. We consider the 1[sup +] vibrations gen ... [AIP Conf. Proc. 899, 109 (2007)] published Fri Apr 27, 2007.
Reduced Shell Model Calculations of [sup 106]Sb and [sup 108]Sb
Erdal Dikmen
The reduced shell model calculations have been done for the odd-odd [sup 106]Sb and [sup 108]Sb isotopes. The model space has been chosen as 1d[sub 5/2], 0g[sub 7/2], 1d[sub 3/2], 2s[sub 1/2] for the reduced calculations and included 0h[sub 11/2] for the full calculations. The reduced shell model ca ... [AIP Conf. Proc. 899, 107 (2007)] published Fri Apr 27, 2007.
Backtracing of the Impact Parameter through Pattern Recognition Analysis on Heavy Ion Reaction Data
Jacopo De Sanctis, Matteo Masotti, and A. Bonasera
One of the problems in the analysis of nucleus-nucleus collisions is to get information on the value of the impact parameter b through the knowledge of some features of each event. The experimental values of Z, transverse energy and multiplicity of fragments are good candidates to get hints on the v ... [AIP Conf. Proc. 899, 105 (2007)] published Fri Apr 27, 2007.
Electromagnetic Moments of Exotic Nuclei: Recent Studies
Dimiter L. Balabanski
State-of-the-art studies of electromagnetic moments of exotic nuclei in experiments with radioactive beams are presented. These include first results on the 19/2[sup +] isomer in [sup 127]Sn, which was populated in a relativistic fragmentation reaction within the g-RISING campaign at GSI, Darmstadt, ... [AIP Conf. Proc. 899, 7 (2007)] published Fri Apr 27, 2007.
Novel Ideas for Neutrino Beams
Ken Peach
Recent developments in neutrino physics, primarily the demonstration of neutrino oscillations in both atmospheric neutrinos and solar neutrinos, provide the first conclusive evidence for physics beyond the Standard Model of particle physics. The simplest phenomenology of neutrino oscillations, for t ... [AIP Conf. Proc. 899, 45 (2007)] published Fri Apr 27, 2007.
Superscaling analyses of inclusive electron scattering and their extension to charge-changing neutrino cross sections in nuclei
A. N. Antonov, M. V. Ivanov, M. K. Gaidarov, E. Moya de Guerra, J. A. Caballero et al.
Superscaling analyses of inclusive electron scattering from nuclei are extended from the quasielastic processes to the delta excitation region. The calculations of (e, e[prime]) cross sections for the target nucleus [sup 12]C at various incident electron energies are performed using scaling function ... [AIP Conf. Proc. 899, 3 (2007)] published Fri Apr 27, 2007.
Proton-Neutron Correlation Energies From Self-Consistent Large-Scale Mass Calculations
M. V. Stoitsov and W. Nazarewicz
Proton-neutron correlation energies extracted from double differences in binding energies, obtained from theoretical masses calculated within the Skyrme density functional theory with contact pairing interaction, are compared with experimental values based on the 2003 nuclear mass compilation. It is ... [AIP Conf. Proc. 899, 26 (2007)] published Fri Apr 27, 2007.
The Bucharest Tandem Accelerator --- part of the European Infrastructure
Nicolae Victor Zamfir
The Bucharest Tandem van de Graaff accelerator in Bucharest is described. The scientific program in both applied and basic research is outlined. Through many international collaborations, the accelerator is, indeed, part of the European Nuclear Physics Research infrastructure. (C)2007 American Insti ... [AIP Conf. Proc. 899, 23 (2007)] published Fri Apr 27, 2007.
First Results from the Stopped RISING Campaign at GSI: The Mapping of Isomeric Decays in Highly Exotic Nuclei
P. H. Regan, A. B. Garnsworthy, S. J. Steer, S. Pietri, Zs. Podolyak et al.
The first results from the Stopped Beam RISING experimental campaign performed at the GSI laboratory in Darmstadt, Germany, are presented. RISING (Rare ISotope INvestigations at GSI) constitutes a major new experimental program in European nuclear structure physics research aimed at using relativist ... [AIP Conf. Proc. 899, 19 (2007)] published Fri Apr 27, 2007.
Saddle point shapes of nuclei
D. N. Poenaru, I. H. Plonski, and W. Greiner
Very general reflection asymmetrical saddle point nuclear shapes are obtained by solving an integro-differential equation without being necessary to specify a certain parametrization. This equation is derived as an Euler-Lagrange relationship associated to the variational problem of minimizing the p ... [AIP Conf. Proc. 899, 15 (2007)] published Fri Apr 27, 2007.
Quantum Phase Transitions in Finite Nuclei: Theoretical Concepts and Experimental Evidence
R. F. Casten
The concept of quantum phase transitions in the equilibrium structure of finite nuclei as a function of N and Z has recently taken on considerable interest. Sparked by data in nuclei with N=90, which pointed towards the presence of coexisting spherical and deformed phases, a new class of models for ... [AIP Conf. Proc. 899, 11 (2007)] published Fri Apr 27, 2007.