X-ray laser research at advanced photon research center of JAERI, Kansai

被引：4

作者：

Kado, M ^{[1
]}

Kawachi, T ^{[1
]}

Tanaka, M ^{[1
]}

Hasegawa, N ^{[1
]}

Takahashi, K ^{[1
]}

Namba, S ^{[1
]}

Sukegawa, K ^{[1
]}

Sasaki, A ^{[1
]}

Lu, PX ^{[1
]}

Tang, HJ ^{[1
]}

Nagashima, K ^{[1
]}

Daido, H ^{[1
]}

Kilpio, AV ^{[1
]}

Kato, Y ^{[1
]}

机构：

[1] JAERI Kansai, Adv Photon Res Ctr, Kyoto 6190215, Japan

来源：

SOFT X-RAY LASERS AND APPLICATIONS IV | 2001年 / 4505卷

关键词：

x-ray laser; transient excitation; ultra-short laser; traveling wave pumping;

D O I：

10.1117/12.450603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have observed lasing on Ne-like 3s-3p line from titanium (32.4nm), Ni-like 4p-4d line from silver (13.9nm) and tin (11.9nm) with the transient collisional excitation (TCE) scheme that uses combinations of a long pre-pulse (similar tons) and a short main pulse (similar tops) or a short pre-pulse (similar tops) and a short main pulse (similar tops). A gain coefficient of 24cm(-1) have been measured for plasma length up to 4mm with silver slab targets and 14cm(-1) up to 6mm with tin slab targets. We have installed a step mirror in the focusing system to generate traveling wave on the target. The traveling speed on the target is measured to be 3.08cm/s; and very close to the traveling speed of light. The traveling wave system improves the gain coefficient to 35cm(-1) from 24cm(-1) for Ni-like Ag and to 30cm(-1) from 14cm(-1) for Ni-like Sn. The strong gain saturation has been observed for the Ni-like Ag and Ni-like Sn. The output energy o the N-like Sn x-ray laser is 20muJ. Spatial beam profiles of propagating x-ray lasers through gain plasma have been measured and are indicating localization of very high gain area and x-ray laser refraction.

引用

页码：54 / 61

页数：8

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