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Phys. Rev. B 69, 174105 (2004) [5 pages]

Decay kinetics in low-energy emission of KCl:Tl: A Jahn-Teller model interpretation

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P. Fabeni, D. Mugnai, G. P. Pazzi, and A. Ranfagni
Institute of Applied Physics “Nello Carrara,” Via Panciatichi 64, 50127 Firenze, Italy

Received 27 June 2003; revised 24 February 2004; published 19 May 2004

Anomalous decay kinetics in the low-energy emission of KCl:Tl at 475 nm is detected in the 30–110 K temperature range. This emission has many characteristics of an AX emission, that is, it originates by escape of excitation from the AT well. For this reason, we can adopt a Jahn-Teller model that was recently reproposed for interpreting this kind of behavior. On this basis, a rather simple and plausible interpretation of the observed data can be given.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.69.174105
DOI:
10.1103/PhysRevB.69.174105
PACS:
71.70.Ej, 71.55.-i, 63.20.Mt