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Rate coefficients and cross-sections for the reactions of C(3PJ) atoms with methylacetylene and allene

被引：47
作者：
Chastaing, D
Le Picard, SD
Sims, IR
Smith, IWM
Geppert, WD
Naulin, C
Costes, M [1 ]
机构：
[1] Univ Bordeaux 1, Lab Physicochim Mol, UMR 5803 CNRS, F-33405 Talence, France
[2] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England
来源：
CHEMICAL PHYSICS LETTERS | 2000年 / 331卷 / 2-4期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1016/S0009-2614(00)01231-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The reactivity of C(P-3(J)) atoms towards methylacetylene and allene has been investigated using complementary experimental methods. Kinetic measurements performed over the range T= 15-295 It have yielded thermal rate coefficients: (2.7 +/- 0.6) x 10(-10)(T/298 K)(-(0.11+/-0.07)) and (3.5 +/- 0.8) x 10(-10)(T/298 K)(-(0.01+/-0.12)) cm(3) molecule(-1) s(-1), respectively. Crossed beam experiments conducted in the range of relative translational energies epsilon (tr) = 4.9-282 meV have yielded integral cross-sections for H(S-2(1/2)) production that are proportional to (E-tr)(-0.56+/-0.02) and (epsilon (tr))(-0.55+/-0.01) respectively, in excellent agreement with the temperature dependencies of the rate coefficients. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码：170 / 176
页数：7
相关论文
共 23 条
[1]   The formation of large hydrocarbons and carbon clusters in dense interstellar clouds [J].
Bettens, RPA ;
Herbst, E .
ASTROPHYSICAL JOURNAL, 1997, 478 (02) :585-593
[2]   Neutral-neutral reactions at the temperatures of interstellar clouds:: Rate coefficients for reactions of atomic carbon, C(3P), with O2, C2H2, C2H4 and C3H6 down to 15 K [J].
Chastaing, D ;
James, PL ;
Sims, IR ;
Smith, IWM .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (09) :2247-2256
[3]   Direct kinetic measurements on reactions of atomic carbon, C(3P), with O2 and NO at temperatures down to 15 K [J].
Chastaing, D ;
Le Picard, SD ;
Sims, IR .
JOURNAL OF CHEMICAL PHYSICS, 2000, 112 (19) :8466-8469
[4]  
CHASTAING D, IN PRESS ASTRON ASTR
[5]   INTERSTELLAR CARBON-CHEMISTRY - REACTION-RATES OF NEUTRAL ATOMIC CARBON WITH ORGANIC-MOLECULES [J].
CLARY, DC ;
HAIDER, N ;
HUSAIN, D ;
KABIR, M .
ASTROPHYSICAL JOURNAL, 1994, 422 (01) :416-422
[6]   State-to-state cross sections for the C(3Pj)+O2(X3Σg-)→CO(X1Σ+)+O(1D2) reaction at kinetic energies between 4.4 and 90 meV [J].
Costes, M ;
Naulin, C .
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE, 1998, 1 (12) :771-775
[7]   Comparison of the cross-sections and thermal rate constants for the reactions of C(3PJ) atoms with O2 and NO [J].
Geppert, WD ;
Reignier, D ;
Stoecklin, T ;
Naulin, C ;
Costes, M ;
Chastaing, D ;
Le Picard, SD ;
Sims, IR ;
Smith, IWM .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2000, 2 (13) :2873-2881
[8]  
HAIDER N, 1993, J PHOTOCH PHOTOBIO A, V70, P119
[9]   KINETIC INVESTIGATION OF THE REACTIONS OF GROUND-STATE ATOMIC CARBON, C(2P2(3PJ)), WITH ACETYLENES BY TIME-RESOLVED ATOMIC RESONANCE - ABSORPTION-SPECTROSCOPY IN THE VACUUM ULTRA-VIOLET [J].
HAIDER, N ;
HUSAIN, D .
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 1992, 176 :133-150
[10]  
HERBST E, 1995, ANNU REV PHYS CHEM, V46, P27, DOI 10.1146/annurev.pc.46.100195.000331
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