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21 October 1999 Characterization of a high-gain Ne-like Fe transient x-ray laser
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We present experimental results of a high efficiency Ne-like Fe transient collisional excitation x-ray laser using the COMET 15 TW table-top laser system at LLNL. The plasma formation, ionization and collisional excitation of the x- ray laser have been optimized using two sequential laser pulses: a plasma formation beam with 5 J energy of 600 ps duration and a pump beam with 5 J energy of 1.2 ps duration. Since the observation of strong lasing on the 255 angstroms 3p - 3s J equals 0 - 1 transition of Ne-like Fe, we have achieved high gains of 35 cm-1 and saturation of the x-ray laser. A five-stage traveling wave excitation enhances the strongest Fe 3p - 3s 255 angstroms lasing line as well as additional x-ray lines. A careful characterization of the plasma column conditions using L-shell spectroscopy indicates the degree of ionization along the line focus.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stephen J. Moon, James Dunn, Anatoly Ya. Faenov, Tatiana A. Pikuz, Kevin B. Fournier, Albert L. Osterheld, Vyacheslav N. Shlyaptsev, Yuelin Li, and Joseph Nilsen "Characterization of a high-gain Ne-like Fe transient x-ray laser", Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999);


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