✦ LIBER ✦

Vibrational dispersion in ground and excited states: the Γ 7(2T2g)⇐Γ8(4A2g) absorption and luminescence spectra of crystalline K2ReF6 at 4 K

✍ Scribed by Marco Bettinelli; Lorenzo Di Sipio; Gianluigi Ingletto; Colin D. Flint

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 253 KB
Volume: 138
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80399-8

No coin nor oath required. For personal study only.

✦ Synopsis

Trigonal crystals of K*ReF, show intense r7 ( 2Tzs) -+r r ( 4AZg) luminescence at 4 and 77 K under 5 14 nm excitation. Extensive vibronic structure is resolved which is dominated by the vibronic origins due to the trigonal components ofthe Ye, vq and Y) modes of the ReFa-ion. The vibrational dispersions of Ye and uq are significantly greater in the ground state than in the excited states and the cause of this is discussed.