Low-energy electron attachment to SF6.: I.: Kinetic modeling of nondissociative attachment

被引:55
作者
Troe, Juergen [1 ]
Miller, Thomas M. [2 ]
Viggiano, Albert A. [2 ]
机构
[1] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany
[2] USAF, Res Lab, Space Vehicles Directorate, Bedford, MA 01731 USA
关键词
D O I
10.1063/1.2804761
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
Low-energy electron-molecule collisions are analyzed by kinetic modeling within the framework of statistical unimolecular rate theory. Nondissociative electron attachment to SF6 is used to illustrate the approach. An internally consistent representation is provided for attachment cross sections and rate coefficients in relation to detachment lifetimes, and both thermal and specific rate coefficients for detachment. By inspecting experimental data, the contributions of intramolecular vibrational redistribution and vibrationally inelastic collisions can be characterized quantitatively. This allows for a prediction of attachment rate coefficients as a function of electron and gas temperature as well as gas pressure over wide ranges of conditions. The importance of carefully controlling all experimental parameters, including the carrier gas pressure, is illustrated. The kinetic modeling in Part II of this series is extended to dissociative electron attachment to SF6. (C) 2007 American Institute of Physics.
引用
收藏
页数:12
相关论文
共 55 条
[1]   EVALUATED KINETIC AND PHOTOCHEMICAL DATA FOR ATMOSPHERIC CHEMISTRY SUPPLEMENT-IV - IUPAC SUBCOMMITTEE ON GAS KINETIC DATA EVALUATION FOR ATMOSPHERIC CHEMISTRY [J].
ATKINSON, R ;
BAULCH, DL ;
COX, RA ;
HAMPSON, RF ;
KERR, JA ;
TROE, J .
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1992, 21 (06) :1125-1568
[2]   IR photon enhanced dissociative electron attachment to SF6:: Dependence on photon, vibrational, and electron energy [J].
Braun, M. ;
Gruber, F. ;
Ruf, M. -W. ;
Kumar, S. V. K. ;
Illenberger, E. ;
Hotop, H. .
CHEMICAL PHYSICS, 2006, 329 (1-3) :148-162
[3]   Low-energy electron attachment to SF6 molecules:: Vibrational structure in the cross-section for SF5- formation up to 1 eV [J].
Braun, M ;
Ruf, MW ;
Hotop, H ;
Allan, M .
CHEMICAL PHYSICS LETTERS, 2006, 419 (4-6) :517-522
[4]   High resolution study of anion formation in low-energy electron attachment to SF6 molecules in a seeded supersonic beam [J].
Braun, M ;
Barsotti, S ;
Marienfeld, S ;
Leber, E ;
Weber, JM ;
Ruf, MW ;
Hotop, H .
EUROPEAN PHYSICAL JOURNAL D, 2005, 35 (02) :177-191
[5]   COLLISION OF SF6 MOLECULES WITH XE(NF) RYDBERG ATOMS IN A QUADRUPOLE TRAP - DEPENDENCE OF THE SF6- ION LIFETIME ON N [J].
BRINCOURT, G ;
PACHA, SR ;
CATELLA, R ;
ZEREGA, Y ;
ANDRE, J .
CHEMICAL PHYSICS LETTERS, 1989, 156 (06) :573-577
[6]   Temperature dependence of negative ion lifetimes [J].
Cannon, M. ;
Liu, Y. ;
Suess, L. ;
Dunning, F. B. ;
Steill, J. D. ;
Compton, R. N. .
JOURNAL OF CHEMICAL PHYSICS, 2007, 127 (06)
[7]   DETERMINATION OF THE ELECTRON-AFFINITIES OF MOLECULES USING NEGATIVE-ION MASS-SPECTROMETRY [J].
CHEN, ECM ;
WILEY, JR ;
BATTEN, CF ;
WENTWORTH, WE .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (01) :88-94
[8]  
Christophorou L. G., 2004, FUNDAMENTALS ELECT I
[9]   EFFECT OF TEMPERATURE ON THE FORMATION AND AUTODESTRUCTION OF PARENT ANIONS [J].
CHRISTOPHOROU, LG ;
DATSKOS, PG .
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 1995, 149 :59-77
[10]   Electron interactions with SF6 [J].
Christophorou, LG ;
Olthoff, JK .
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 2000, 29 (03) :267-330