1Department of Astronomy, Nanjing University, Nanjing 210093
2Institute of Astronomy and Department of Physics, National Central University, Chung-Li, Taipei 32054
3Joint Astrophysics Center of Chinese Academy of Sciences, Beijing University, Beijing 100871
4State Key Laboratory for Cosmic Ray and High Energy Astrophysics, Chinese Academy of Sciences, Beijing 100039
Effects of Electron Screening on Electron Capture Rates in High Density Presupernova Core
JIANG Guang-Fei1;PENG Qiu-He1,3,4;CHOU Chih-Kang2
1Department of Astronomy, Nanjing University, Nanjing 210093
2Institute of Astronomy and Department of Physics, National Central University, Chung-Li, Taipei 32054
3Joint Astrophysics Center of Chinese Academy of Sciences, Beijing University, Beijing 100871
4State Key Laboratory for Cosmic Ray and High Energy Astrophysics, Chinese Academy of Sciences, Beijing 100039
Abstract： Considering that the electron capture rate can be greatly reduced by the electron screening effect in the regime of high temperature and high density, we calculate the effect of electron screening on the electron capture rate for two important elements 56Ni and 55Co in the high density condition of a pre-supernova star. The effect of electron screening is so effective that the electron capture rate may be reduced to about 20%.
JIANG Guang-Fei;PENG Qiu-He;;CHOU Chih-Kang. Effects of Electron Screening on Electron Capture Rates in High Density Presupernova Core[J]. 中国物理快报, 2003, 20(5): 647-649.
JIANG Guang-Fei, PENG Qiu-He, , CHOU Chih-Kang. Effects of Electron Screening on Electron Capture Rates in High Density Presupernova Core. Chin. Phys. Lett., 2003, 20(5): 647-649.
2003, Vol. 20 
