Influence of nuclear thermometers and hot nuclei properties on nuclear temperature isospin effect measurement

Abstract

The influence of nuclear thermometers and hot nuclei properties on nuclear temperature isospin dependence is studied. A systematic study of the nuclear temperature isospin effect is presented for heavy-ion collisions at moderate energy via the isospin-dependent quantum molecular dynamics model in the company of the statistical decay model (GEMINI). It is found that the isospin dependence of nuclear temperatures which is calculated by a momentum quadrupole fluctuation thermometer is more easily affected by hot nuclei mass range. However, the isospin dependence of nuclear temperatures which is calculated by an isotope yields ratio thermometer is more easily affected by neutron-proton ratio range of the hot nuclei. It is also found that the isospin dependence of nuclear temperatures can be changed by hot nuclei properties.