Dissociative electron attachment to CHF2Cl

被引：8

作者：

Cicman, P

Pelc, A

Sailer, W

Matejcik, S

Scheier, P

Märk, TD

机构：

[1] Leopold Franzens Univ, Inst Ionenphys, A-6020 Innsbruck, Austria

[2] Marie Curie Sklodowska Univ, Inst Phys, PL-20031 Lublin, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 371卷 / 3-4期

基金：

奥地利科学基金会;

关键词：

D O I：

10.1016/S0009-2614(03)00084-8

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：

We present results of a crossed electron/molecule beams study concerning dissociative electron attachment (DEA) to CHF2Cl. This study was performed in the electron energy range from about 0-10 eV and at a gas temperature of 300 K. Four fragment negative ions (Cl-, F-, CCIF- and CF2-) were observed. The following partial absolute cross-sections for DEA to CHF2Cl were obtained, 2 x 10(-19) cm(2) at the 1.1 eV resonance for Cl-, 3 x 10(-20) cm(2) at the 3.4 eV resonance for F-,approximate to 2 x 10(-21) at the 3.0 eV resonance for CCIF- and 3 x 10(-21) at the 8.6 eV resonance for CF2-. Using the cross-section functions obtained, total rate coefficients for DEA to CHF2Cl were calculated giving a value of 9.0 x 10(-13) cm(3)s(-1) at room temperature. Present results are compared with previous data allowing thus to clarify existing discrepancies. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：231 / 237

页数：7

共 17 条

[1] Dissociative electron attachment in chlorofluoromethanes and the correlation with vertical attachment energies [J].