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Titolo:
REACTIONS OF THE METHYLIDINE RADICAL WITH CH4, C(2)H(2)R C2H4, C2H6, AND BUT-1-ENE STUDIED BETWEEN 23-K AND 295-K WITH A CRESU APPARATUS
Autore:
CANOSA A; SIMS IR; TRAVERS D; SMITH IWM; ROWE BR;
Indirizzi:
UNIV RENNES 1,UMR 6627 CNRS,EQUIPE ASTROCHIM EXPT,CAMPUS BEAULIEU F-35042 RENNES FRANCE UNIV BIRMINGHAM,SCH CHEM BIRMINGHAM B15 2TT W MIDLANDS ENGLAND
Titolo Testata:
Astronomy and astrophysics
fascicolo: 2, volume: 323, anno: 1997,
pagine: 644 - 651
SICI:
0004-6361(1997)323:2<644:ROTMRW>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEUTRAL-NEUTRAL REACTIONS; LOW TEMPERATURE KINETICS; RATE CONSTANTS; INTERSTELLAR-MOLECULES; OH RADICALS; ATMOSPHERE; CHEMISTRY; PHOTOCHEMISTRY; HYDROCARBONS; DEPENDENCE;
Keywords:
MOLECULAR DATA; MOLECULAR PROCESSES; METHODS, LABORATORY; ISM, MOLECULES; PLANETS, ATMOSPHERES; RATE CONSTANT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
51
Recensione:
Indirizzi per estratti:
Citazione:
A. Canosa et al., "REACTIONS OF THE METHYLIDINE RADICAL WITH CH4, C(2)H(2)R C2H4, C2H6, AND BUT-1-ENE STUDIED BETWEEN 23-K AND 295-K WITH A CRESU APPARATUS", Astronomy and astrophysics, 323(2), 1997, pp. 644-651

Abstract

The temperature dependences of the reactions of the methylidine radical (CH) with several hydrocarbons were studied in the temperature range 23-295 K using the Rennes CRESU apparatus coupled with the pulsed laser photolysis (PLP), laser induced fluorescence (LIF) technique. All the reactions remain very fast at low temperature. For the reactions of CH with olefins, a maximum rate is obtained at about 70 K and then the fate coefficients slightly decrease at lower temperatures, A similar effect is observed in the data for CH+CH4 and CH+C2H6 with a maximumrate being obtained at about 40 K. The results are compared with previous studies where available, and the nature of the possible products is also discussed, although this study does not enable their detection. Consequences of these new results for the chemistry of planetary atmospheres and interstellar clouds are stressed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/11/20 alle ore 21:43:21