Transient collisional excitation X-ray lasers with 1-ps tabletop drivers

Recent results are presented for 1-ps driven X-ray laser amplification in Ne-like and Ni-like transient collisional excitation research at the Lawrence Livermore National Laboratory. Plasma formation, ionization and collisional excitation are optimized using two laser pulses of 600- and 1-ps duratio...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 1999-11, Vol.5 (6), p.1441-1446
Main Authors: Dunn, J., Osterheld, A.I., Yuelin Li, Nilsen, J., Shlyaptsev, V.N.
Format: Article
Language:English
Subjects:
Amplification
Beams (radiation)
Drivers
Excitation
Gain
Ionization
Laboratories
Laser beams
Laser excitation
Laser transitions
Nickel
Optical pulses
Picosecond pulses
Plasma measurements
Plasma x-ray sources
Pulse measurements
X-ray lasers
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Summary:Recent results are presented for 1-ps driven X-ray laser amplification in Ne-like and Ni-like transient collisional excitation research at the Lawrence Livermore National Laboratory. Plasma formation, ionization and collisional excitation are optimized using two laser pulses of 600- and 1-ps duration at tabletop energies of typically 5 J or less in each beam. Gain of 35 cm/sup -1/ and higher has been measured on the 147 /spl Aring/ 4d/spl rarr/4pJ=0/spl rarr/1 transition of Ni-like Pd and is a direct consequence of the nonstationary population in, version produced by the high intensity picosecond pulse. We report the characterization of the X-ray laser properties including the transient gain lifetime and beam divergence for different Ne-like and Ni-like X-ray lasers.
ISSN:1077-260X
1558-4542
DOI:10.1109/2944.814982