Effect of Ultrastrong Magnetic Field on the Electron Capture in the Stellar Surroundings

Using the nuclear shell model, we study the influence of ultra-strong magnetic field on the electron capture nuclei reactions ^56,58Co→^56,58Fe, ^56,57Ni→^56,57Co, ^52,53Fe→^52,53Mn and ^57,60Cu→^57,60Ni. The results show that the electron capture rates of most iron group nuclei are increased greatly in the ultrastrong magnetic field, and even exceed three orders of magnitude in the range from 5×10¹³ G to 2.5×10¹⁷ G.