Complete description of the excitation of the 6³P₁and 6¹P₁states of mercury by spin-polarized electrons

Abstract

We have carried out relativistic distorted wave calculations for the excitation of the 63P 1 and 61P 1 states of mercury from the ground 1S 0 state by spin-polarized electrons. The ground and excited states are represented by multiconfiguration Dirac–Fock wavefunctions. We have corrected previously published expressions for the generalized Stokes parameters (GSP) and the complete set of independent scattering parameters. Results for GSP, generalized STU parameters and the complete set of independent scattering parameters for incident electrons with an energy of 8 eV are obtained and compared with the available experimental data and theoretical semirelativistic R-matrix and distorted wave Born approximation calculations.

(e, eγ)-coincidence studies to determine spin-resolved Stokes parameters of the 185 nm emission line in mercury

“…The RDWBA calculations were carried out as described by Muktavat et al [4] and the BP-RM5 model has been briefly described by Herting et al [1], who also give many references to previous work. The spindependent Stokes parameters in the BP-RM5 model were generated with the program MJK of Grum-Grzhimailo [5].…”

“…The experimental results reported below are compared with predictions from three theoretical models, namely a first-order full-relativistic distorted-wave model (RDWBA), a five-state Breit-Pauli R-matrix (close-coupling) approach (BP-RM5), and a convergent close-coupling (CCC) model, in which relativistic effects are accounted for by adding non-relativistic amplitudes via known intermediate-coupling coefficients. The RDWBA calculations were carried out as described by Muktavat et al [4] and the BP-RM5 model has been briefly described by Herting et al [1], who also give many references to previous work. The spindependent Stokes parameters in the BP-RM5 model were generated with the program MJK of Grum-Grzhimailo [5].…”

“…Starting with the N-electron target description, the RDWBA model employs fully relativistic wavefunctions calculated with the GRASP92 program of Parpia et al [7]. Muktavat et al [4] used two different sets of wavefunctions in their work. The simpler one uses a minimal spectroscopic representation of the ground and excited state involving only the 6s, 6p or 6p outer orbitals.…”