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1 February 1994 Recombination and collisional x-ray lasers at LULI
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We present our recent efforts to produce X-ray lasers in the 200 angstroms range by using the moderate power drive of the LULI facility in Palaiseau. The 4 - 5 transitions of Li-like sulfur exhibit large gain-length products in recombining plasmas, and appear to be less sensitive to plasma non-uniformity than the 3 - 4 and 3 - 5 transitions previously studied. From numerical simulations this is likely due to smaller radiative and collisional excitation from 4f than from 3d levels. In collisional scheme, neon-like zinc gives analogous results to similar works on other elements for the 3p - 3s, J equals 2 yields 1 transitions, but the J equals 0 yields 1 transition shows a surprisingly large gain coefficient of 4.9 cm-1. From a detailed comparison of time-dependent intensities of the J equals 0 yields 1 and the J equals 2 yields 1 lines, we conclude that transitions from J equals 0 and from J equals 2 are not emitted in the same region of the plasma.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gerard Jamelot, Pierre Jaegle, Antoine Carillon, Bernard Gauthe, P. Goedtkindt, M. Guennou, Annie Klisnick, Clary Moeller, Bedrich Rus, Alain Sureau, and Philippe Zeitoun "Recombination and collisional x-ray lasers at LULI", Proc. SPIE 2012, Ultrashort Wavelength Lasers II, (1 February 1994);


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