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- Title
Ionization dynamics in the laser plasma in a low pressure gas target.
- Authors
Demidov, R.; Kalmykov, S.; Mozharov, A.; Petrenko, M.; Sasin, M.
- Abstract
In Xe-laser-plasma short-wave-radiation sources, the laser-energy-to-EUV conversion efficiency (CE) turns out to be substantially lower than theoretical expectations. An estimation made in the present work is evidence of what a long period of the primary ionization, lasting up to a moment when high- Z ions appear to emit short-wave photons, can be considered as a main cause for the low CE values. During that period the plasma remains low-ionized and absorbs weakly the laser energy. Data deduced from laser light absorption measurements confirm the estimation above. A preionization of the gas target with the UV excimer laser pulse is proposed as a method to accelerate the ionization process.
- Subjects
IONIZATION (Atomic physics); LASER plasmas; LOW pressure (Science); COAL gas; XENON; RADIATION sources; LIGHT absorption
- Publication
Technical Physics Letters, 2012, Vol 38, Issue 11, p1004
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S106378501211020X