Global Calculation of Nuclear Shape Isomers
Peter Moller, Arnold J. Sierk, Ragnar Bengtsson, Hiroyuki Sagawa, and Takatoshi Ichikawa
To determine which nuclei may exhibit shape isomerism, we use a well-benchmarked macroscopic-microscopic model to calculate potential-energy surfaces as functions of spheroidal (epsilon), hexadecapole (epsilon), and axial-asymmetry (gamma) shape coordinates for 7206 nuclei from A=31 to A=290. We ana ... [Phys. Rev. Lett. 103, 212501 (2009)] published Fri Nov 20, 2009.
Spin response of a normal Fermi liquid with noncentral interactions
C. J. Pethick and A. Schwenk
We consider the spin response of a normal Fermi liquid with noncentral interactions under conditions intermediate between the collisionless and hydrodynamic regimes. This problem is of importance for calculations of neutrino properties in dense matter. By expressing the deviation of the quasiparticl ... [Phys. Rev. C 80, 055805 (2009)] published Fri Nov 20, 2009.
Synthesis of superheavy element 120 via Ti+Cf hot fusion reactions
Z. H. Liu and Jing-Dong Bao
Synthesis of superheavy element 120 in terms of the Ti+Cf fusion-evaporation reactions is evaluated and discussed. It is found that the reactions of Cf(Ti,3n)120 and Cf(Ti,4n)120 are relatively favorable with the maximum evaporation-residue cross sections of 0.12, 0.09, 0.11, and 0.25 pb, respective ... [Phys. Rev. C 80, 054608 (2009)] published Fri Nov 20, 2009.
Weak-interaction strength from charge-exchange reactions versus beta decay in the A=40 isoquintet
M. Bhattacharya, C. D. Goodman, and A. Garcia
We report a measurement of the Gamow-Teller (GT) strength distribution for Ar-->K using the 0(p,n) reaction. The measurement extends observed GT strength distribution in the A=40 system up to an excitation energy of ~8 MeV. In comparing our results with those from the beta decay of the isospin mirro ... [Phys. Rev. C 80, 055501 (2009)] published Thu Nov 19, 2009.
Spin susceptibility of degenerate quark matter
Kausik Pal and Abhee K. Dutt-Mazumder
The expression for spin susceptibility chi of degenerate quark matter is derived with corrections up to [script O](gln g). It is shown that, at low density, chi changes sign and turns negative, indicating a ferromagnetic phase transition. To this order, we also calculate sound velocity c and incomp ... [Phys. Rev. C 80, 054911 (2009)] published Thu Nov 19, 2009.
High-spin states in Ce and Ce: Further evidence for triaxial nuclear shapes
E. S. Paul, J. P. Revill, M. Mustafa, S. V. Rigby, A. J. Boston et al.
High-spin states have been studied in the neutron-deficient odd-N Ce and Ce isotopes, produced in Mo(S,5ngamma) and Mo(S,5ngamma) reactions, using the Euroball and Eurogam gamma-ray spectrometers, respectively. A quadruples analysis (gamma) of the coincident gamma-ray data has established new band s ... [Phys. Rev. C 80, 054312 (2009)] published Thu Nov 19, 2009.
Symmetry energy from fragment observables in the canonical thermodynamic model
G. Chaudhuri, F. Gulminelli, and S. Das Gupta
Different formulas relating measurable fragment isotopic observables to the symmetry energy of excited nuclei were proposed and applied to the analysis of heavy ion collision data in the recent literature. In this article, we examine the quality of the different expressions in the framework of the M ... [Phys. Rev. C 80, 054606 (2009)] published Wed Nov 18, 2009.
Isobaric incompressibility of isospin asymmetric nuclear matter
D. N. Basu, P. Roy Chowdhury, and C. Samanta
The isospin dependence of the saturation properties of asymmetric nuclear matter, particularly the incompressibility K(X)=K+KX+O(X) at saturation density, is systematically studied using density-dependent M3Y interaction. K characterizes the isospin dependence of the incompressibility at saturation ... [Phys. Rev. C 80, 057304 (2009)] published Wed Nov 18, 2009.
Description of proton-neutron mixed-symmetry states near Sn within a realistic large scale shell model
K. Sieja, G. Martinez-Pinedo, L. Coquard, and N. Pietralla
Large scale shell-model calculations with an effective interaction derived from the realistic G-matrices were performed for N=80 isotones for which so-called mixed-symmetry states were recently observed experimentally. Calculated spectra are shown to be in good agreement with data. The calculated tr ... [Phys. Rev. C 80, 054311 (2009)] published Wed Nov 18, 2009.
Quantum molecular dynamics study of the mass distribution of products in 7.0A MeV U+U collisions
Kai Zhao, Xizhen Wu, and Zhuxia Li
Within the improved quantum molecular dynamics (ImQMD) model incorporating the statistical decay model, the reactions of U+U at an energy of 7.0A MeV have been studied. The charge, mass, and excitation energy distributions of primary fragments are investigated within the ImQMD model, and de-excitati ... [Phys. Rev. C 80, 054607 (2009)] published Wed Nov 18, 2009.
Coordinate space proton-deuteron scattering calculations including Coulomb force effects
S. Ishikawa
We present a practical method to solve the proton-deuteron scattering problem at energies above the three-body breakup threshold, in which we treat three-body integral equations in coordinate space accommodating long-range proton-proton Coulomb interactions. The method is examined for phase shift pa ... [Phys. Rev. C 80, 054002 (2009)] published Wed Nov 18, 2009.
Centrality and system size dependence of (multi-strange) hyperons at 40A and 158A GeV: A comparison between a binary collision model and a Boltzmann + hydrodynamic hybrid model
Hannah Petersen, Michael Mitrovski, Tim Schuster, and Marcus Bleicher
We present results on the centrality and system size dependence of (multi-strange) hyperons in Pb+Pb collisions at 40A and 158A GeV from the Ultra-relativistic Quantum Molecular Dynamics (UrQMD-v2.3) model and a coupled Boltzmann + hydrodynamics calculation. The second approach is realized in a hybr ... [Phys. Rev. C 80, 054910 (2009)] published Tue Nov 17, 2009.
Experimental energy-dependent nuclear spin distributions
T. von Egidy and D. Bucurescu
A new method is proposed to determine the energy-dependent spin distribution in experimental nuclear-level schemes. This method compares various experimental and calculated moments in the energy-spin plane to obtain the spin-cutoff parameter sigma as a function of mass A and excitation energy using ... [Phys. Rev. C 80, 054310 (2009)] published Tue Nov 17, 2009.
Candidates for low-lying mixed-symmetry states in Nd
E. Williams, R. J. Casperson, V. Werner, H. Ai, P. Boutachkov et al.
The nucleus Nd was investigated using gamma-gamma coincidence and angular-correlation techniques following the epsilon/beta decay of Sm and Pr. Spins, gamma-decay intensities, and E2/M1 mixing ratios were extracted from the data. The 2 and 2 states were identified as possible mixed-symmetry states, ... [Phys. Rev. C 80, 054309 (2009)] published Tue Nov 17, 2009.
Analytical transformed harmonic oscillator basis for continuum discretized coupled channels calculations
A. M. Moro, J. M. Arias, J. Gomez-Camacho, and F. Perez-Bernal
A new method for continuum discretization in continuum-discretized coupled-channels calculations is proposed. The method is based on an analytic local-scale transformation of the harmonic-oscillator wave functions proposed for other purposes in a recent work [Karatagladis et al., Phys. Rev. C 71, 06 ... [Phys. Rev. C 80, 054605 (2009)] published Mon Nov 16, 2009.
Photoexcitation of astrophysically important states in Mg
R. Longland, C. Iliadis, G. Rusev, A. P. Tonchev, R. J. deBoer et al.
We performed a nuclear resonance fluorescence experiment to determine the energy and quantum numbers of excited states in Mg. Spin-parity ambiguities of excited states in Mg, the compound nucleus for the s-process neutron source Ne(alpha,n)Mg, result in large uncertainties in the reaction rates. The ... [Phys. Rev. C 80, 055803 (2009)] published Mon Nov 16, 2009.
High-precision (p,t) reaction measurement to determine Ne(alpha,p)Na reaction rates
A. Matic, A. M. van den Berg, M. N. Harakeh, H. J. Wortche, G. P. A. Berg et al.
x-ray bursts are identified as thermonuclear explosions in the outer atmosphere of accreting neutron stars. The thermonuclear runaway is fueled by the alphap process that describes a sequence of (alpha,p) reactions triggered by the Ne(alpha,p)Na breakout reaction from the hot CNO cycles. We studied ... [Phys. Rev. C 80, 055804 (2009)] published Mon Nov 16, 2009.
Statistical properties of E(5) and X(5) symmetries
Zhan-feng Hou (侯占峰), Yu Zhang (张宇), and Yu-xin Liu (刘玉鑫)
We investigate the statistical properties of the E(5) and X(5) symmetries, which describe states at the critical points of nuclear shape phase transitions in the geometric model, and analyze the fluctuations in both the energy spectrum and the E2 transition intensities using different angular moment ... [Phys. Rev. C 80, 054308 (2009)] published Mon Nov 16, 2009.
Jet energy loss, photon production, and photon-hadron correlations at energies available at the BNL Relativistic Heavy Ion Collider (RHIC)
Guang-You Qin, Jorg Ruppert, Charles Gale, Sangyong Jeon, and Guy D. Moore
Jet energy loss, photon production, and photon-hadron correlations are studied together at high transverse momentum in relativistic heavy-ion collisions at Relativistic Heavy Ion Collider (RHIC) energies. The modification of hard jets traversing a hot and dense nuclear medium is evaluated by consist ... [Phys. Rev. C 80, 054909 (2009)] published Mon Nov 16, 2009.
Measurement of the branching ratio of the He beta-decay channel into the alpha+d continuum
R. Raabe, J. Buscher, J. Ponsaers, F. Aksouh, M. Huyse et al.
We measured the deuteron-emission branch of the beta decay of the halo nucleus He using the technique of implantation into a highly segmented silicon detector. The method, used here for the first time with a beam of He ions, ensures precise normalization; the value obtained for the branching ratio i ... [Phys. Rev. C 80, 054307 (2009)] published Mon Nov 16, 2009.
Supersoft Symmetry Energy Encountering Non-Newtonian Gravity in Neutron Stars
De-Hua Wen, Bao-An Li, and Lie-Wen Chen
Considering the non-Newtonian gravity proposed in grand unification theories, we show that the stability and observed global properties of neutron stars cannot rule out the supersoft nuclear symmetry energies at suprasaturation densities. The degree of possible violation of the inverse-square law of ... [Phys. Rev. Lett. 103, 211102 (2009)] published Mon Nov 16, 2009.
Shell Model Analysis of the Neutrinoless Double Beta Decay of $^{48}$Ca. (arXiv:0911.3807v1 [nucl-th])
ePrint arXiv http://arXiv.org/
Role of phi decays for K- yields in relativistic heavy-ion collisions. (arXiv:0911.3762v1 [nucl-th])
ePrint arXiv http://arXiv.org/
The Relation Between Equal-Time and Light-Front Wave Functions. (arXiv:0911.3691v1 [nucl-th])
ePrint arXiv http://arXiv.org/
Ellipsoids of U(3) model. (arXiv:0911.3847v1 [math-ph])
ePrint arXiv http://arXiv.org/
Momentum Broadening of a Fast Parton in a Perturbative Quark-Gluon Plasma. (arXiv:0903.3683v4 [hep-ph] UPDATED)
ePrint arXiv http://arXiv.org/
Deuteron production and elliptic flow in relativistic heavy ion collisions. (arXiv:0910.1977v2 [nucl-th] UPDATED)
ePrint arXiv http://arXiv.org/
Neutron/proton ratio of nucleon emissions as a probe of neutron skin. (arXiv:0906.5281v2 [nucl-th] UPDATED)
ePrint arXiv http://arXiv.org/
On the structure of the X(1835) baryonium. (arXiv:0904.2163v2 [nucl-th] UPDATED)
ePrint arXiv http://arXiv.org/
The three-quark static potential in perturbation theory. (arXiv:0911.3541v1 [hep-ph] CROSS LISTED)
ePrint arXiv http://arXiv.org/
Evolution of fluctuations near QCD critical point. (arXiv:0911.1772v1 [hep-ph] CROSS LISTED)
ePrint arXiv http://arXiv.org/
Closed-orbit theory for spatial density oscillations. (arXiv:0911.0284v1 [math-ph] CROSS LISTED)
ePrint arXiv http://arXiv.org/