Ionization-induced refraction in recombination x-ray lasers

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871868· OSTI ID:253496

Decker, C D; Eder, D C; London, R A ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

Ionization-induced refraction is examined in regimes relevant to recent and planned recombination x-ray lasing experiments [D. C. Eder {ital et} {ital al}., Phys. Plasmas {bold 1}, 1744 (1994)]. A model that self-consistently evolves the laser radiation as it ionizes a neutral gas is presented. The model allows for multiple ionization stages and for spatial variations in the neutral gas density appropriate for studying gas jets and laser evaporated gases. The length of highly stripped plasma is calculated in H-like Li and Li-like N systems, where the conditions are appropriate for recombination. It is found that for a given pump power there is always an optimal spot size and focal position with respect to the gas jet, which minimizes refraction and maximizes the length for which gain is possible. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 253496
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
HYDROGEN
IONIZATION
LASER-PRODUCED PLASMA
LASER-RADIATION HEATING
LITHIUM
MULTI-PHOTON PROCESSES
NITROGEN
PULSED LASERS
RECOMBINATION
REFRACTION
X-RAY LASERS