publication . Article . 2016

Photoionization pathways and thresholds in generation of Lyman-α radiation by resonant four-wave mixing in Kr-Ar mixture

Oleg A. Louchev; Norihito Saito; Yu Oishi; Koji Miyazaki; Kotaro Okamura; Jumpei Nakamura; Masahiko Iwasaki; Satoshi Wada;
Open Access English
  • Published: 01 Sep 2016 Journal: AIP Advances (issn: 2158-3226, Copyright policy)
  • Publisher: AIP Publishing LLC
Abstract
We develop a set of analytical approximations for the estimation of the combined effect of various photoionization processes involved in the resonant four-wave mixing generation of ns pulsed Lyman-α (L-α) radiation by using 212.556 nm and 820-845 nm laser radiation pulses in Kr-Ar mixture: (i) multi-photon ionization, (ii) step-wise (2+1)-photon ionization via the resonant 2-photon excitation of Kr followed by 1-photon ionization and (iii) laser-induced avalanche ionization produced by generated free electrons. Developed expressions validated by order of magnitude estimations and available experimental data allow us to identify the area for the operation under h...
Subjects
arXiv: Physics::Atomic Physics
free text keywords: Physics, QC1-999, General Physics and Astronomy, Four-wave mixing, Laser, law.invention, law, Radiation, Atomic physics, Chemistry, Excitation, Atmospheric-pressure laser ionization, Ionization, Photoionization, Photoionization mode
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publication . Article . 2016

Photoionization pathways and thresholds in generation of Lyman-α radiation by resonant four-wave mixing in Kr-Ar mixture

Oleg A. Louchev; Norihito Saito; Yu Oishi; Koji Miyazaki; Kotaro Okamura; Jumpei Nakamura; Masahiko Iwasaki; Satoshi Wada;