Effects of Electron Screening on Electron Capture Rates in High Density Presupernova Core

Chin. Phys. Lett.

2003, Vol. 20

Issue (5): 647-649 DOI:

Original Articles

Effects of Electron Screening on Electron Capture Rates in High Density Presupernova Core

JIANG Guang-Fei¹;PENG Qiu-He^1,3,4;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

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JIANG Guang-Fei, PENG Qiu-He, CHOU Chih-Kang 2003 Chin. Phys. Lett. 20 647-649

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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%.

Keywords: 26.30.+k 97.60.Bw

Published: 01 May 2003

PACS:	26.30.+k
	97.60.Bw	(Supernovae)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I5/0647

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