Jpn. J. Appl. Phys. 47 (2008) pp. 293-296 |Previous Article| |Next Article| |Table of Contents|
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Fine Structures of Laser-Driven Punched-Out Tin Fuels Observed with Extreme Ultraviolet Backlight Imaging
Tsuyoshi Ando,
Shinsuke Fujioka,
Yoshinori Shimada1,
Tomoya Birou,
Shinsuke Maeda,
Yuzuri Yasuda,
Keiji Nagai,
Takayoshi Norimatsu,
Hiroaki Nishimura,
Katsunobu Nishihara,
Noriaki Miyanaga,
Yasukazu Izawa, and
Kunioki Mima
Institute of Laser Engineering, Osaka University, 2-6 Yamada-Oka, Suita, Osaka 565-0871, Japan
1Institute for Laser Technology, 2-6 Yamada-Oka, Suita, Osaka 565-0871, Japan
(Received September 9, 2007; accepted September 27, 2007; published online January 18, 2008)
The laser-driven punched-out scheme, which has been proposed for supplying minimum-mass tin fuels at a high repetition rate, was investigated for use in an extreme ultraviolet (EUV) light source. The density profile of punched-out tin fuel is a critical parameter for validating applicability of this scheme. An EUV backlight technique was developed to measure the density profile and fine structure. Experimental results reveal that a punched-out target does not remain its initial thin shape, but expands into a rarefied gas and liquid and small particles under the present target and laser conditions.
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http://jjap.jsap.jp/link?JJAP/47/293/
DOI: 10.1143/JJAP.47.293
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