Simulation of recombination-pumped soft x-ray lasers in wall-confined laser-produced plasmas

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Journal of the Optical Society of America, Part B: Optical Physics; (USA)

DOI:https://doi.org/10.1364/JOSAB.7.000266· OSTI ID:6908946

Daido, H; Nishihara, K; Miura, E; Nakai, S ^[1]

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1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-Oka Suita Osaka 565, Japan (JP)

We describe the physical mechanisms of the recombination-pumped laser action of the carbon VI Balmer-{alpha} line (18.2 nm), which is expected to have a gain duration of as long as 10 nsec in the cylindrical-wall-confinement plasmas produced by a CO{sub 2} laser. We present the modeling of the laser action with the combination of the one-dimensional hydrodynamic code and the multilevel atomic rate equation code. The gain coefficient derived from the calculated dynamics of the level populations is somewhat smaller than the experimental data. Additional expansion cooling may account for the discrepancy. The higher gain coefficient of the order of 5 cm{sup {minus}1} is expected when we irradiate a high-{ital Z} doped cylinder-type target.

• OSTI ID: 6908946
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics; (USA), Journal Name: Journal of the Optical Society of America, Part B: Optical Physics; (USA) Vol. 7:3; ISSN JOBPD; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
CARBON IONS
CHARGED PARTICLES
COMPUTERIZED SIMULATION
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
GAIN
IONIZING RADIATIONS
IONS
LASER-PRODUCED PLASMA
LASERS
MULTICHARGED IONS
PLASMA
POPULATION INVERSION
PUMPING
RADIATIONS
RECOMBINATION
SIMULATION
SOFT X RADIATION
X RADIATION
X-RAY LASERS