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Titolo:
TRICKY IR MONOMER SPECTROSCOPY IN PLANAR MOLECULAR JETS
Autore:
OOMENS J; REUSS J;
Indirizzi:
CATHOLIC UNIV NIJMEGEN,DEPT MOL & LASER PHYS,TOERNOOIVELD 1 NL-6525 ED NIJMEGEN NETHERLANDS
Titolo Testata:
Israel Journal of Chemistry
fascicolo: 4, volume: 37, anno: 1997,
pagine: 367 - 378
SICI:
0021-2148(1997)37:4<367:TIMSIP>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
INFRARED-LASER SPECTROSCOPY; INTRAMOLECULAR VIBRATIONAL REDISTRIBUTION; ABSORPTION-SPECTROSCOPY; HIGH-RESOLUTION; FOURIER-TRANSFORM; DOUBLE-RESONANCE; HOT-BAND; SUPERSONIC JET; SPECTRA; ETHYLENE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
71
Recensione:
Indirizzi per estratti:
Citazione:
J. Oomens e J. Reuss, "TRICKY IR MONOMER SPECTROSCOPY IN PLANAR MOLECULAR JETS", Israel Journal of Chemistry, 37(4), 1997, pp. 367-378

Abstract

An experimental technique based on double resonance spectroscopy in the collisional environment of a seeded molecular jet expansion is described. Using this technique, hot band spectra of several small hydrocarbons have been investigated as well as the (related) collision-induced relaxational behavior upon vibrational excitation. The collisional relaxation in the jet is of crucial importance to the experiments presented here as it distributes the population over many rovibrational states after initial excitation by a pump laser. A second IR laser then probes the transitions starting from the vibrationally excited state(s), as hot bands. In that way one enters an energy region around 4000 cm(-1), beyond the highest fundamental bands. The possibility to label an individual rovibrational state with the pump laser enables us to obtain reliable initial spectroscopic assignments. In addition, the present technique allows one to distinguish the cold bands due to depletionof the vibrational ground state, which may reveal new and surprising spectral features as well.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 01:36:07