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Titolo:
The Si(P-3(J))+O-2 reaction: A fast source of SiO at very low temperature;CRESU measurements and interstellar consequences
Autore:
Le Picard, SD; Canosa, A; des Forets, G; Rebrion-Rowe, C; Rowe, BR;
Indirizzi:
Univ Rennes 1, UMR Phys Atomes Lasers Mol & Surfaces 6627, Equipe Astrochim Expt, F-35042 Rennes, France Univ Rennes 1 Rennes France F-35042 trochim Expt, F-35042 Rennes, France Observ Paris, F-92195 Meudon, France Observ Paris Meudon France F-92195Observ Paris, F-92195 Meudon, France
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 3, volume: 372, anno: 2001,
pagine: 1064 - 1070
SICI:
1432-0746(200106)372:3<1064:TSRAFS>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERSTELLAR CLOUDS; MOLECULAR CLOUDS; SUBMILLIMETER OBSERVATIONS; SILICON CHEMISTRY; NEUTRAL REACTIONS; ORION-KL; SIO; KINETICS; SHOCKS; GAS;
Keywords:
molecular processes; methods : laboratory; ISM : molecules;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Canosa, A Univ Rennes 1, UMR Phys Atomes Lasers Mol & Surfaces 6627, Equipe Astrochim Expt, Campus Beaulieu, F-35042 Rennes, France Univ Rennes 1 Campus Beaulieu Rennes France F-35042 nes, France
Citazione:
S.D. Le Picard et al., "The Si(P-3(J))+O-2 reaction: A fast source of SiO at very low temperature;CRESU measurements and interstellar consequences", ASTRON ASTR, 372(3), 2001, pp. 1064-1070

Abstract

The rate coefficient of the reaction Si(P-3(J)) + O-2 --> SiO + O has beenmeasured at temperatures down to 15 K using a CRESU (Cinetique de Reactionen Ecoulement Supersonique Uniforme) apparatus coupled with the PLP-LIF (Pulsed Laser Photolysis - Laser Induced Fluorescence) technique. The temperature dependence of the rate coefficient is well fitted using the expression: 1.72 x 10(-10) (T/300 K)(-0.53) exp(-17 K/T) cm(3) molecule(-1) s(-1) in the temperature range 15-300 K. The silicon chemistry in interstellar clouds is reviewed and possible consequences of our study are stressed.

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Documento generato il 27/11/20 alle ore 07:34:01