Evidence of super-elastic effects in laser-induced ionisation of Na vapour
作者： F Roussel , P Breger , G Spiess , C Manus , S Geltman
DOI: 10.1088/0022-3700/13/21/002
关键词: Range (particle radiation) 、 Resonance 、 Seeding 、 Laser 、 Ion 、 Atomic physics 、 Irradiation 、 Physics 、 Electron 、 Ionization
摘要: The authors report the direct observation of an intense ion yield when Na vapour in wide range densities 1012-1015 cm-3 is irradiated by a laser tuned to 3S1/2-3P3/2 resonance and with intensities 3*103-4*105 W cm-2. Evidence superelastic e-Na(3p) collisions shown above 1013 cm-3. A critical discussion possible electron seeding heating mechanisms simple theoretical model for observed yields are given.
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