J. Phys. IV France 11 (2001) Pr2-55-Pr2-57
Gain profile of transient collisional excitation X-ray laserM. Tanaka1, T. Kawachi1, M. Kado1, N. Hasegawa1, K. Sukegawa1, A. Nagashima1, Y. Kato1 and H. Takenaka2
1 Advanced Photon Research Center, Kansai Research Establishment, Japan Atomic Energy Research Institute, 8-1-1-2 Umemidai, Kizucho, Sourakugun, Kyoto 619-0215, Japan
2 Optical Device Division, NTT Advanced Technology Corporation, 3-9-11 Midoricho, Musashinoshi, Tokyo 180-8585, Japan
We observed the spatial gain profile of the transient collisional excitation Ni-like Ag laser ([MATH]) in various plasma length using near field imaging method. The gain coefficient of the x-ray laser was estimated as 25cm-1. The gain region was crescent shape and the size was 50[MATH]. Localization of high gain area was also observed.
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