The effects of ion screening on neutrino-nucleus interactions in core-collapse supernova explosions  

作　　者：Xiong-Ping Xia Lin Yi 

机构地区：[1]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Research in Astronomy and Astrophysics》2010年第7期689-695,共7页天文和天体物理学研究（英文版）

摘　　要：The effects of ion screening in stellar core collapses are investigated based on a new progenitor star model. Simulation results show that ion screening slightly affects the leptons and decreases explosion energy, which is a negative factor for energy transfer supernova explosions. We also investigate the effect on type Ⅱ-supernova explosions of neutrino-nucleus elastic scattering based on the new progenitor star model. It is shown that, compared with the previously calculated results, neutrinos-nucleus elastic scattering in stellar core collapses is more severe, leading to an obvious reduction of the neutrino leakage energy loss and an increase of supernova explosion energy.The effects of ion screening in stellar core collapses are investigated based on a new progenitor star model. Simulation results show that ion screening slightly affects the leptons and decreases explosion energy, which is a negative factor for energy transfer supernova explosions. We also investigate the effect on type Ⅱ-supernova explosions of neutrino-nucleus elastic scattering based on the new progenitor star model. It is shown that, compared with the previously calculated results, neutrinos-nucleus elastic scattering in stellar core collapses is more severe, leading to an obvious reduction of the neutrino leakage energy loss and an increase of supernova explosion energy.

关 键 词：STARS SUPERNOVAE general -- neutrino-nucleus 

分 类 号：O572.321[理学—粒子物理与原子核物理] P145.3[理学—物理]