Abstract
By monitoring the spontaneous emission from electron-beam-excited xenon difluoride (XeF2) plasmas, the radiative lifetime of XeF* [C (1/2)] has been determined. Excited XeF was formed directly through electron-impact dissociative excitation of XeF2. The time behavior of the subsequent 351-nm fluorescence displayed two distinct exponential decay regions. The first was characterized by a pressure-independent decay constant of 16.5±5 ns, the radiative lifetime of XeF* [C (1/2)]. The time constant of the second region was linearly dependent on XeF2 pressure, indicating that C-state XeF molecules are, in the late afterglow, formed by a two-body collision process exhibiting a large rate constant (∼3×10-10 cm3 sec-1).
Original language | English (US) |
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Pages (from-to) | 287-290 |
Number of pages | 4 |
Journal | Applied Physics Letters |
Volume | 30 |
Issue number | 6 |
DOIs | |
State | Published - 1977 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)