强磁场下中子星外壳层的Gamow-Teller跃迁电子俘获  

Gamow-Teller Transition Electron Capture of the Outer Crusts of Neutron Stars in Strong Magnetic Field

作　　者：刘晶晶[1] 罗志全[1] 刘宏林[1] 赖祥军[1] 

机构地区：[1]西华师范大学理论物理研究所,四川南充637002

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2007年第4期460-462,共3页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10347008)

摘　　要：以核素^55Co和^54Mn为例．讨论了强磁场下的中子星外壳层Gamow—Teller跃迁（G-T）电子俘获率．结果表明，对于大部分中子星，表面磁场（10^4～10^9T）对Cr-T跃迁电子俘获率的影响很小，对于超磁中子星．表面磁场（10^9～10^13T）使GT跃迁电子俘获率降低大约2—3个数量级．Taking the nuclide ^55Co and ^54 Mn as examples,the rate of Gamow-Teller transition electron capture of the crusts of Neutron stars were in a strong magnetic field investigated. The results showed that at the range of the magnetic fields （10^4-10^9 T） on surfaces of the most neutron stars, the magnetic field has only a minor effect on the electron capture. However,at the magnetic field 10^9-10^13 T range for some magnetars,the EC rates are decrease greatly even for 2-3 orders by the strong magnetic field.

关 键 词：强磁场 电子俘获 中子星 

分 类 号：P145.8[天文地球—天体物理]