Evidence of super-elastic effects in laser-induced ionisation of Na vapour
- 14 November 1980
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 13 (21), L631-L636
- https://doi.org/10.1088/0022-3700/13/21/002
Abstract
The authors report the direct observation of an intense ion yield when Na vapour in the wide range of densities 1012-1015 cm-3 is irradiated by a laser tuned to the 3S1/2-3P3/2 resonance and with intensities in the range 3*103-4*105 W cm-2. Evidence of superelastic e-Na(3p) collisions is shown above 1013 cm-3. A critical discussion of possible electron seeding and heating mechanisms and a simple theoretical model for the observed ion yields are given.Keywords
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