Soft X-ray laser observation of femtosecond-laser-driven ablation of tungsten

被引：1
|
作者：
Nishikino, Masaharu [1 ]
Hasegawa, Noboru [1 ]
Ishino, Masahiko [1 ]
Ochi, Yoshihiro [1 ]
Kawachi, Tetsuya [1 ]
Yamagiwa, Mitsuru [1 ]
Kato, Yoshiaki [1 ,2 ]
机构：
[1] Japan Atom Energy Agcy, Kansai Photon Sci Inst, Quantum Beam Sci Directorate, Kizugawa, Kyoto 6190215, Japan
[2] Grad Sch Creat New Photon Ind, Hamamatsu, Shizuoka 4311202, Japan
来源：
CHINESE OPTICS LETTERS | 2015年 / 13卷 / 07期
基金：
日本学术振兴会;
关键词：
Tungsten;
D O I：
10.3788/COL201513.070002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ablation dynamics of tungsten irradiated with a 70 fs laser pulse is investigated with X-ray terferometry and X-ray imaging using a 13.9 um soft X-ray laser of 7 ps pulse duration. The evolution of high-density ablation front of tungsten (i.e., W) is presented. The ablation front expands to similar to 120 nm above the original target surface at 160 ps after feintosecond-laser irradiation with an e,ximnsion speed of approximately 750 in/s. "111ese, results will provide important data for understanding ablation properties of W, which is a, candidate material of the first wall of magnetic confinement fusion reactors.
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页数：3
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