Ion chemistry in trifluoromethane, CHF3

被引：29

作者：

Jiao, CQ ^{[1
]}

Nagpal, R ^{[1
]}

Haaland, PD ^{[1
]}

机构：

[1] USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 269卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(97)00253-4

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：

Cross sections for dissociative ionization of trifluoromethane by electron impact have been measured using Fourier-transform mass spectrometry. Four fragment ions, CHF2+, CF3+, CF2+, and CF+ are observed, with a total cross section of 3.4 +/- 0.4 x 10(-16) cm(2) at 60 eV. CFx+ (x = 1 - 3) ions react with neutral CHF3 to yield CHF2+ with rate coefficients of 3.9 +/- 0.5 and 2.1 +/- 0.4 x 10(-10) cm(3)s(-1) for x = 2 and 3, respectively. The rate of cationic polymerization is less than 7 x 10(-13) cm(3)s(-1) and the anions F- and CF3- have yields less than 3 x 10(-20) cm(2) between 30 and 60 eV. (C) 1997 Published by Elsevier Science B.V.

引用

页码：117 / 121

页数：5

共 34 条

[21] TAILORED EXCITATION FOR FOURIER-TRANSFORM ION-CYCLOTRON RESONANCE MASS-SPECTROMETRY [J].