Depolarization following electron capture by highly charged ions in a polarized target

Abstract

W e analyse the electron-spin depolarization of highly charged hydrogenie and d!d-like iom formed hy singlailectmn capture in an electron-spimpolarized target. In general, ions are formed in highly excited states and are depolarized by the fine and hyperfinestructure interaction as they cascade down to the ground state. The final polarization is determined by the state into which the electmm is captured, the alignment of the excited state formed in the capture process, thenudear spin, and the angle between the target electron-spin polarization vector and the ionbeam axis. We also calculate the polarization of the radiation emitted following polarise4electmn capture. We point out that the circulsr and linear polarization of the emission line can be monitored to determine the polarization of the ions.

Spin-polarized electron capture for the Na+3He2+system at aTanaka1, Shimakura2, Ohshima3 et al. 1994Phys. Rev. A9070View full textAdd to dashboardCite

“…With the external magnetic field of 0.3 T, we will perform the cascade photon decay model proposed by Liu and Dunford [14]. Assuming the quantization axis is parallel to the beam propagation direction, the state multipole p" of He+ formed by the electron capture is given by pq , q , q L [(2k~+1)(2k~+1)(2J+1)(2J+1)]' L kz ks '(0) '(0) (2) 50 kc S ks where p(0) and p(0) are the orbital and spin part of the state multipoles, and k, kL, and ks are the rank of each state multipole, respectively.…”