J. Phys. IV France
Volume 133, June 2006
Page(s) 1189 - 1192
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 1189-1192

DOI: 10.1051/jp4:2006133243

EUV and particle generations from laser-irradiated solid- and low-density targets

H. Nishimura1, S. Fujioka1, T. Okuno1, Y. Tao1, N. Ueda1, T. Ando1, T. Aota1, Y. Yasuda1, S. Uchida2, Y. Shimada2, M. Yamaura2, K. Hashimoto2, Q. Gu1, K. Nagai1, Y. Norimatsu1, H. Furukawa2, Y.G. Kang1, A. Sunahara2, K. Gamada1, M. Murakami1, K. Nishihara1, N. Miyanaga1, Y. Izawa1 and K. Mima1

1  Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita Osaka 565-0871, Japan
2  Institute for Laser Technology, 2-6 Yamada-oka, Suita Osaka 565-0871, Japan

Properties of extreme ultraviolet (EUV) and particle emissions from laser-produced tin (Sn) plasma were experimentally investigated for use in industrial applications. Dependence of EUV emission on the initial thickness of Sn overcoat on a plastic sphere was studied to clarify the minimum mass needed to keep sufficient conversion to EUV and minimize plasma debris. EUV emission from low-density targets showed narrower spectra peaked at 13.5 nm, attributed to reduction of satellite line emissions in the spectrum foot and opacity broadening at the peak. It is shown that not only the EUV generation but also ion spectra are significantly affected by the Sn coat thicknesses.

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