Response Function of Hot Nuclear Matter
F. L. Braghin, D. Vautherin
Abstract
We investigate the response function of hot nuclear matter to a small isovector external field using a simplified Skyrme interaction reproducing the value of the symmetry energy coefficient. We consider values of the momentum transfer corresponding to the dipole oscillation in heavy nuclei. We find that while at zero temperature the particle hole interaction is almost repulsive enough to have a sharp (zero sound type) collective oscillation, such is no longer the case at temperatures of a few MeV. As a result a broadening of the dipole resonance occurs, leading to its quasi disappearence by the time the temperature reaches 5 MeV. The sensivity of the temperature evolution of the width when modifying the residual interaction strength is also examined.
Create a lesson
Related papers
Parametrization of unitary matrices, parametrizing the symmetric S matrix and the NN S matrix above the inelastic threshold
N. A. Khokhlov
Thermofractal Dynamics in the Multisource Thermal Model: A Unified Approach to Multiparticle Production
Airton Deppman, Trambak Bhattacharyya, Maciej Rybczyński et al.
Electroweak Constraints on Nuclear Neutron Distributions and the Low-Energy Weak Mixing Angle
Xu-Run Huang, Tong-Gang Yue, Zhen Zhang et al.
Active-subspace learning reveals dominant parameter directions in nuclear observables
Tom Plies, Margarida Companys Franzke, Achim Schwenk
Shape coexisting intruder states in even Sn isotopes and their influence on the B4/2<1 anomaly
P. Buganu, R. Benjedi, R. Budaca
Light nucleus and hypernucleus production at RHIC and LHC energies: a comparative study of phenomenological models
J. Aichelin, A. Andronic, F. Bellini et al.