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Titolo:
Direct observation of intramolecular vibrational energy redistribution under white light excitation. II. Fluorescence spectra of fluorobenzene derivatives by controlled electron impact
Autore:
Koto, E; Furuya, K; Ogawa, T;
Indirizzi:
Kyushu Univ, Dept Mol Sci & Technol, Kasuga, Fukuoka 8168580, Japan KyushuUniv Kasuga Fukuoka Japan 8168580 , Kasuga, Fukuoka 8168580, Japan Kyushu Univ, Dept Mol & Mat Sci, Kasuga, Fukuoka 8168580, Japan Kyushu Univ Kasuga Fukuoka Japan 8168580 , Kasuga, Fukuoka 8168580, Japan
Titolo Testata:
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
fascicolo: 3, volume: 56, anno: 2000,
pagine: 515 - 521
SICI:
1386-1425(20000215)56:3<515:DOOIVE>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
METHYL INTERNAL-ROTATION; P-FLUOROTOLUENE; IONIZATION; STATE; N-2; DIFLUOROBENZENE; DISTRIBUTIONS; ACCELERATION; IVR;
Keywords:
electron-impact excitation; intramolecular vibrational energy redistribution; fluorobenzene; fluorotoluene; fluorescence spectra;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Furuya, K Kyushu Univ, Dept Mol Sci & Technol, Kasuga, Fukuoka 8168580, Japan Kyushu Univ Kasuga Fukuoka Japan 8168580 Fukuoka 8168580, Japan
Citazione:
E. Koto et al., "Direct observation of intramolecular vibrational energy redistribution under white light excitation. II. Fluorescence spectra of fluorobenzene derivatives by controlled electron impact", SPECT ACT A, 56(3), 2000, pp. 515-521

Abstract

The low-resolution (resolution: 0.6 nm) fluorescence spectra of fluorobenzene derivatives, o-, m- and p-fluorotoluene (o-, m- and p-FT) were observedto investigate intramolecular vibrational energy redistribution (IVR) under controlled electron impact. The o- and m-FT spectra mainly consisted of unstructured emission from optically inactive states (bath modes) populated through IVR. The p-FT spectrum consisted of structured emission from optically active states and unstructured emission. The high-resolution (resolution: 0.15 nm) fluorescence spectrum of p-FT was measured to estimate the fraction of the structured emission intensity to the total emission intensity. The IVR rate of p-FT under electron impact excitation was faster than that under laser excitation. The fraction did not depend on the incident energy of electrons from 20 to 200 eV, and thus the IVR acceleration is not attributable to breakdown of the Born approximation. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 20:47:16