Low Temperature Physics: 36, 417 (2010); https://doi.org/10.1063/1.3432260 (7 pages)
Crystal field splitting on D↔S transitions of atomic
O. Byrne, M.A. Collier, M.C. Ryan, and J.G. McCaffrey
Department of Chemistry, National University of Ireland, Maynooth Maynooth, County Kildare, Ireland
Received December 16, 2009
Narrow excitation features present on the [Ar]3d64s1 a6D(J = 9/2 – 1/2) ← [Ar]3d54s2 a6S1/2 transitions of manganese atoms isolated in solid Kr are analyzed within the framework of weak crystal field splitting. Use of the Wp optical lineshape function allowed identification of multiple zero-phonon lines for individual spin-orbit J states of the a6D ← a6S transition recorded with laser-induced excitation spectroscopy. Excellent agreement exists between the predicted crystal field splitting patterns for the J levels of the a6D state isolated in the «red» tetravacancy site of solid Kr. The tetrahedral crystal field of the «red» trapping site splits J > 3/2 levels of the a6DJ and a4D7/2 states by approximately 30 cm–1. This report represents the first definitive evidence of crystal field splitting, induced by the weak van der Waals interactions between a neutral metal atom and the rare gas atoms surrounding it in a well defined solid state site.
PACS: 31.70.Dk Environmental and solvent effects;
Key words: solid Kr, optical lineshape function, D ↔ S transitions.