Progress in table-top transient collisional excitation x-ray lasers at LLNL
We present progress in experiments for high efficiency Ne-like and Ni-like ion x-ray lasers using the transient collisional excitation scheme. Experimental results have been obtained on the COMET 15 TW table-top laser system at the Lawrence Livermore National Laboratory (LLNL). The plasma formation, ionization and collisional excitation of the x-ray laser have been optimized using two sequential laser pulses of 600 ps and 1 ps duration with an optional pre-pulse. We have observed high gains up to 55 cm{sup {minus}1} in Ne-like and Ni-like ion schemes for various atomic numbers. We report strong output for the 4d - 4p line in lower Z Ni-like ion sequence for Mo to Y, lasing from {approximately}190 {angstrom} to 240 {angstrom}, by pumping with less than 5 J energy on target.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP) (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 14738
- Report Number(s):
- UCRL-JC-133238; YN0100000; 97-ERD-105; YN0100000; 97-ERD-105; TRN: US0106230
- Resource Relation:
- Conference: 6th International Conference on X-Ray Lasers, Kyoto (JP), 08/31/1998--09/04/1998; Other Information: PBD: 7 Feb 1999
- Country of Publication:
- United States
- Language:
- English
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