强磁场对中子星壳层热核反应的影响

The Effect of High Magnetic Field on Thermonuclear Reactions in the Shell of a Neutron Star

本文通过考虑强磁场中电子的量子效应，分析了强磁场下电子气体的Fermi能，讨论了磁场对核的屏蔽势和核反应率的影响，进而计算了强磁场对天体物理中几个较重要的热核反应的影响，结果表明，相对于无磁场而言，在较低密度下，足够强的磁场使原子核的屏蔽势显著增加，但在ρ／μe＞10~5molcm^(-3)的密度下，中子星表面存在的强度为10~5～10~9T范围内的磁场对核反应率几乎没有影响。

The Fermi energy of electron and the nuclear screening potential in high magnetic field are analysed respectively. The effects of magnetic field on several important thermonuclear reactions in astrophysics are discussed. It is shown that high magnetic field causes the nuclear screening potential to increase very much in low densities, but the magnetic field (10~5-10~9 T) on the surface of neutron stars has little effect on the thermonuclear reaction in high densities (ρ/μ_e> 1O^5mol·cm^(-3).