Vibrational relaxation of a MnO-4 impurity mode in KClO4 crystal

Anno: 1993

Autori: Taiti C., Foggi P., Signorini G.F., Schettino V.

Affiliazione autori: Dipartimento di Chimica, Università di Firenze, Via G. Capponi 9, 50121 Firenze, Italy; LENS (European Laboratory for Non-linear Spectroscopy), Largo E. Fermi 2, 50125 Firenze, Italy

Abstract: The temperature dependence of the linewidth of the ?1 mode at 847 cm-1 of the MnO-4 ion doped in KClO4 crystals has been investigated in the range 10-298 K by frequency-resolved resonant CARS. The results are discussed in terms of relaxation processes, through which the MnO-4 ?1 mode decays into combinations of internal and external phonons of the matrix. It is found that high-order processes are dominant in accordance with the non-linear behavior of G(T) at higher T. The results are then compared to those obtained for the ?1 mode of ClO-4 in pure KClO4 and RbClO4.

Giornale/Rivista: CHEMICAL PHYSICS LETTERS

Volume: 212 (3-4)      Da Pagina: 283  A: 288

Maggiori informazioni: College of Natural Resources, University of California Berkeley, CNR. Consiglio Nazionale delle Ricerche, CNR. Universit8. – This work is supported by the Italian Minister0 dell’Universit8 e della Ricerca Scientifica e Tecnol-ogica (MURST) and by the Consiglio Nazionale delle Ricerche (CNR), PG-MSTA.
Parole chiavi: Temperature-dependence; MOolecular-crystals
DOI: 10.1016/0009-2614(93)89327-E

Citazioni: 3
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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