VIBRATIONAL-RELAXATION OF A MNO4- IMPURITY MODE IN KCLO4 CRYSTAL

Authors
TAITI C FOGGI P SIGNORINI GF SCHETTINO V
Citation
C. Taiti et al., VIBRATIONAL-RELAXATION OF A MNO4- IMPURITY MODE IN KCLO4 CRYSTAL, Chemical physics letters, 212(3-4), 1993, pp. 283-288
Citations number
31
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
212
Issue
3-4
Year of publication
1993
Pages
283 - 288
Database
ISI
SICI code
0009-2614(1993)212:3-4<283:VOAMIM>2.0.ZU;2-D
Abstract
The temperature dependence of the linewidth of the nu1 mode at 847 cm- 1 of the MnO4- ion doped in KClO4 Crystals has been investigated in th e range 10-298 K by frequency-resolved resonant CARS. The results are discussed in terms of relaxation processes, through which the MnO4- nu 1 mode decays into combinations of internal and external phonons of th e matrix. It is found that high-order processes are dominant in accord ance with the non-linear behavior of GAMMA(T) at higher T. The results are then compared to those obtained for the nu1 mode of ClO4- in pure KClO4 and RbClO4.