Electron affinities, magnetic dipole decay rates, and hyperfine structure for the excited states of5p3Sn−

Abstract

Theoretical results have been computed to complement recent measurements by Scheer et al. [Bull. Am. Phys. Soc. 42, 1026 (1997)], which yielded electron affinities (EA) of excited states of the ground configuration of ${\mathrm{Sn}}^{\mathrm{\ensuremath{-}}}$. Our relativistic configuration-interaction values for the position of the excited ${\mathrm{Sn}}^{\mathrm{\ensuremath{-}}}$ with respect to the negative ion ground state are EA${(}^{2}{D}_{3/2})$=5903 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$ (0.732 eV), and EA${(}^{2}{D}_{5/2})$=6493 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$ (0.805 eV). Triple excitations make a significant contribution. Magnetic dipole hyperfine-structure constants $(A)$ and $M1$ transition probabilities are also reported.