Thermal Electron Capture in the Mixtures of Halocarbons and Environmental Gases

Abstract

The electron capture processes in the mixtures containing halocarbons (CHF 3 or CClF 3 ) and nitrogen have been investigated. Second-and third-order kinetics were observed in both cases. The electron interaction with van der Waals complexes CHF 3 ‚N 2 and CClF 3 ‚N 2 was invoked to explain this behavior and the corresponding rate constants have been determined. The values for two-body processes (5 × 10 -14 cm 3 molecule -1 s -1 -CHF 3 and 1.3 × 10 -13 cm 3 molecule -1 s -1 -CClF 3 ) are fully consistent with the literature data. The estimated rate constants for electron capture by van der Waals complexes are equal to 1.2 × 10 -10 and 2.4 × 10 -11 cm 3 molecule -1 s -1 for CHF 3 ‚N 2 and CClF 3 ‚N 2 , respectively.

Low-Energy Electron Attachment by Chloroalkanes

“…× 10 -13[13], 1.3 × 10 -13[46], 2 × 10 -13[34,35], 5.2 × 10 -14 [15], 7 × 10 -14 [32] 2.1 × 10 -13 CH2Cl2 4.28 2 0 6.5 × 10 -13 [17], 2.6 × 10 -13 [50], 4.7 × 10 -12 [15], 4.6 × 10 -12 [18], 4.8 × 10 -12 [19] 4.7 × 10 -12 × 10 -7 [9, 48], 1.4 × 10 -7 [14], 2.8 × 10 -7 [37], 2.4 × 10 -7 [38, 39], 2.25 × 10 -7 [37] 2.2 × 10 -7 CH2ClCHCl2 5.35 2.5 0 1.4 × 10 -10 [present data], 3.1 × 10 -10 [20, 38], 1.8 × 10 -10 [36-38], 1.5 × 10 -10 [23] 2 × 10 -10 CF2ClCFCl2 6.47 2.5 2 5.4 × 10 -9 [9, 48], 1.2 × 10 -8 [25], 1.1 × 10 -8 [36], 1.15 × 10 -8 [37], 1.1 × 10 -8 [38] 1.1 × 10 -8…”