Modeling short-pulse-driven collisional x-ray lasers and other new schemes

Joseph Nielsen; Yuelin Li; James Dunn; Albert L. Osterheld

doi:10.1117/12.366682

21 October 1999 Modeling short-pulse-driven collisional x-ray lasers and other new schemes

Joseph Nielsen, Yuelin Li, James Dunn, Albert L. Osterheld

Proceedings Volume 3776, Soft X-Ray Lasers and Applications III; (1999) https://doi.org/10.1117/12.366682
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Recently, the technique of using a nsec pulse to preform and ionize the plasma followed by a psec pulse to heat the plasma has enabled low-Z neon-like and nickel-like ions to lase driven by small lasers with only ten joules of energy. In this work we model recent experiments done using the COMET laser at LLNL to illuminate 1 cm long slab targets of Ti with a 4.8 J, 800 ps prepulse followed 1.6 nsec later by a 6 J, 1 psec drive pulse. The LASNEX code is used to calculate the hydrodynamic evolution of the plasma and provide the temperatures and densities of the XRASER code, which then does the kinetics calculations to determine the gain.

Citation Download Citation

Joseph Nielsen, Yuelin Li, James Dunn, and Albert L. Osterheld "Modeling short-pulse-driven collisional x-ray lasers and other new schemes", Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999); https://doi.org/10.1117/12.366682

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