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Lasing properties of the J = 0-1 and the J = 2-1 lines of a neonlike germanium soft-x-ray laser

1994; Optica Publishing Group; Volume: 11; Issue: 11 Linguagem: Inglês

10.1364/josab.11.002287

1520-8540

K. Murai, H. Shiraga, Gang Yuan, Hiroyuki Daido, H. Azuma, E. Miura, R. Kodama, M. Takagi, T. Kanabe, H. Takabe, Yasuyuki Kato, D. Neely, D.M. Oneill, C. L. S. Lewis, A. Djaoui,

Laser-Matter Interactions and Applications

Lasing properties of a collisional-excitation Ne-like Ge soft-x-ray laser have been studied with exploding-foil, single-slab, and double-slab targets under identical pumping conditions. Experimental results for the angular intensity distributions and the temporal variations of the lasing intensities are examined with a hydrodynamic code and ray-trace calculations. The observed angular distributions are well reproduced by these analyses, and it is found that the effective gain regions are located on the high-density side of the expected gain regions. It is shown that the observed lasing intensity of the J = 0 to J = 1 line is strongly correlated with the temporal change of the calculated electron temperature for both the slab and the exploding-foil targets.