Radiation transition rates in a uniform longitudinal 6-kG magnetic field for the (5p)(sup 5)(5d)-(5p)(sup 5)(6p) terms in xenon.

摘要

Calculations are performed to predict the distribution of the (5p)(sup 5)(5d)--(5p)(sup 5)(6p)emission cross section in Xe in a strong magnetic field. For isotopes with no nuclear magnetic moment, the question is the calculation of Lande g factors. This is done with wavefunctions obtained by diagonalizing the electrostatic interaction in jj coupling, leading to reasonable accurate Lande g factors. For levels described by quantum numbers J and M, the Zeeman interaction is always diagonal in M, and with a 6 kG magnetic field the Zeeman interaction is effectively diagonal in J (the non-diagonal matrix elements are negligible), so the resulting cross section calculations are simple. For the isotopes with non-zero magnetic moments, one must determine the dipole and quadrupole hyperfine splitting coefficients. To do this and to improve the overall fit of the calculated and measured energy levels, it was necessary to include configuration interaction between terms of the (5p)(sup 5)(5d) and (5p)(sup 5)(6s) configurations. Comparisons are made between these calculated hyperfine parameters and experiment. Hyperfine splittings are tabulated as are the cross sections and energy shifts due to hyperfine interaction in each transition. When hyperfine interaction is included and levels are characterized by the quantum numbers F and M(sub F), the Zeeman interaction is diagonal in M(sub F) but different F. All these effects were included in the calculations leading to a particularly rich spectrum for Xe(131) with I = 3/2. For example, the (5p)(sup 5)(5d)(sub J) = 4(minus)(5p)(sup 5)(6p)(sub J) = 3 transition is split into approximately 336 components. 21 refs., 3 figs., 12 tabs. (ERA citation 15:036258)