论文信息 - Effect of Ultrastrong Magnetic Field on the Electron Capture in the Stellar Surroundings

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.

Ying Li | Z. Luo | Kun Wang | Ying-Lin Li

[1] K. Langanke,et al. Gamow-Teller strength distributions at finite temperatures and electron capture in stellar environments , 2009, 0911.0303.

[2] Luo Zhi-quan,et al. Neutrino Energy Loss by Electron Capture on Nucleus 56 Mn, 56 Fe, 56 Co and 56 Ni in Strong Electron Screening , 2007 .

[3] Q. Peng,et al. The physics of strong magnetic fields in neutron stars , 2007, 0706.0060.

[4] K. Langanke,et al. Shell-model calculations of stellar weak interaction rates: II. Weak rates for nuclei in the mass range in supernovae environments , 2000, nucl-th/0001018.

[5] L. Hernquist,et al. An Accretion Model for Anomalous X-Ray Pulsars , 1999, astro-ph/9912137.

[6] H. Klapdor-kleingrothaus,et al. Microscopic calculations of weak interaction rates of nuclei in stellar environment for A = 18 to 100 , 1999, nucl-th/9901090.

[7] S. Woosley,et al. Search for Important Weak Interaction Nuclei in Presupernova Evolution , 1994 .

[8] W. Fowler,et al. Stellar weak interaction rates for intermediate mass nuclei. III. Rate tables for the free nucleons and nuclei with A = 21 TO A = 60 , 1982 .

[9] W. Fowler,et al. Stellar weak interaction rates for intermediate-mass nuclei. II. A = 21 to A = 60 , 1982 .

[10] W. Fowler,et al. Stellar weak-interaction rates for sd-shell nuclei. I - Nuclear matrix element systematics with application to Al-26 and selected nuclei of importance to the supernova problem , 1980 .