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Temperature effects of dissociative electron attachment to CF3Cl

✍ Scribed by Ina Hahndorf; Eugen Illenberger; Lucia Lehr; Jörn Manz

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
610 KB
Volume
231
Category
Article
ISSN
0009-2614

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✦ Synopsis

Experimental studies of the ion yield of the reaction e-+ CF3Cl+CF,Cl-+CF3+ Cl-at low energies, E= O-8 eV and temperatures, T= 300-800 K, yield three effects: (A) A threshold peak, hardly noticeable at 300 K, becomes dominant for T> 700 K. (B) The first apparant (shape) resonance of the precursor ion increases and shifts from 1.4 to 1.1 eV as the temperature is raised from 300 to 800 K. (C) The second resonance at 4.7 eV is hardly influenced by increasing temperatures. These effects are interpreted in terms of simple models, including time-dependent wave packets, on a time scale of z 10 fs.

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