He 2 + molecular ion and the He - atomic ion in strong magnetic fields

摘要: We study the question about existence i.e. stability with respect to dissociation of spin-quartet, permutation- and reflection-symmetric ${}^4(-3)^+_g$ ($S_z=-3/2, M=-3$) state $(\alpha\alpha e e)$ Coulomb system: ${\rm He}_2^+$ molecular ion, placed in a magnetic field $0 \le B 10000$ a.u. assume that $\alpha$-particles are infinitely massive (Born-Oppenheimer approximation zero order) adopt parallel configuration, when axis direction coincide, as optimal configuration. The is performed variationally physically adequate trial function. To achieve this goal, we explore several Helium-contained compounds strong fields, particular, spin-quartet ground He}^-$ (spin-triplet) Helium atom, both for $100 \leq B\leq main result ion stable towards all possible decay modes fields $B \gtrsim 120$ increase becomes more tightly bound compact cigar-type form electronic cloud. At $B=1000$ a.u., energy into He}^- + \alpha$ $\sim 701.8$ eV channel He} \alpha $ 729.1$ eV, latter energies window one observed absorption features isolated neutron star 1E1207.4-5209.