Effects of ultra-strong magnetic field on electron capture rates of^(55)Co and ^(56)Ni in the magnetar surrounding  

作　　者：杜军 罗志全 李平平 

机构地区：[1]Institute of Theoretical Physics,China West Normal University

出　　处：《Chinese Physics C》2014年第1期40-42,共3页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(10778719)

摘　　要：The electron capture rates of 55Co and 56Ni in the ultra-strong magnetic field at four typical temperature- density points have been calculated using the nuclear shell model and Landan energy levels quantized approximate correction. The results show that the electron capture rates of 55Co and 56Ni are increased greatly in the ultra-strong magnetic field, and even exceed two orders of magnitude in the range from 4.414×10^13G to 2.207×10^27 G. The change rate of electron abundance, ye, of 55Co and 56Ni under the condition of B=4.414×10^15G in the magnetar surrounding has been calculated and discussed, the proportions of ye of 55Co and 56Ni in the total Ye have been reduced by 50 percent in all more than the condition without a magnetic field.The electron capture rates of 55Co and 56Ni in the ultra-strong magnetic field at four typical temperature- density points have been calculated using the nuclear shell model and Landan energy levels quantized approximate correction. The results show that the electron capture rates of 55Co and 56Ni are increased greatly in the ultra-strong magnetic field, and even exceed two orders of magnitude in the range from 4.414×10^13G to 2.207×10^27 G. The change rate of electron abundance, ye, of 55Co and 56Ni under the condition of B=4.414×10^15G in the magnetar surrounding has been calculated and discussed, the proportions of ye of 55Co and 56Ni in the total Ye have been reduced by 50 percent in all more than the condition without a magnetic field.

关 键 词：electron capture ultra-strong magnetic field change rate of electron abundant 

分 类 号：O572.322[理学—粒子物理与原子核物理]