High gain x-ray lasers pumped by transient collisional excitation

Journal Article · Mon Sep 28 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.56567· OSTI ID:21202588

Dunn, J; Osterheld, A L; Shlyaptsev, V N; Hunter, J R; Shepherd, R; Stewart, R E; White, W E ^[1]

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1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States)

We present recent results of x-ray laser amplification of spontaneous emission in Ne-like and Ni-like transient collisional excitation schemes. The plasma formation, ionization and collisional excitation can be optimized using two laser pulses of 1 ns and 1 ps duration at table-top energies of 5 J in each beam. High gain of 35 cm{sup -1} has been measured on the 147 Aa4d{yields}4p J=0{yields}1 transition of Ni-like Pd and is a direct consequence of the nonstationary population inversion produced by the high intensity picosecond pulse. We report the dependence of the x-ray laser line intensity on the laser plasma conditions and compare the experimental measurements with hydrodynamic and atomic kinetics simulations for Ne-like and Ni-like lasing.

• OSTI ID: 21202588
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 443; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
EXCITATION
GAIN
ION COLLISIONS
IONIZATION
LASER RADIATION
MULTICHARGED IONS
PALLADIUM IONS
PLASMA
PLASMA SIMULATION
POPULATION INVERSION
PULSES
TRANSIENTS
X-RAY LASERS