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

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

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3776...14n&link_type=abstract

Proc. SPIE Vol. 3776, p. 14-23, Soft X-Ray Lasers and Applications III, Jorge J. Rocca; Luiz B. Da Silva; Eds.

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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.

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