title: Opacity effect on extreme ultraviolet radiation from laser-produced tin plasmas.
abstract: Opacity effects on extreme ultraviolet (EUV) emission from laser-produced tin (Sn) plasma have been experimentally investigated. An absorption spectrum of a uniform Sn plasma generated by thermal x rays has been measured in the EUV range (9-19 nm wavelength) for the first time. Experimental results indicate that control of the optical depth of the laser-produced Sn plasma is essential for obtaining high conversion to 13.5 nm-wavelength EUV radiation; 1.8% of the conversion efficiency was attained with the use of 2.2 ns laser pulses.
authors.affiliation: Institute of Laser Engineering, Osaka University, 2-6 Yamada-Oka, Suita, Osaka 565-0871, Japan. sfujioka@ile.osaka-u.ac.jp
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Fujioka
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nishimura
authors.forename: Katsunobu
authors.initials: K
authors.lastname: Nishihara
authors.forename: Akira
authors.initials: A
authors.lastname: Sasaki
authors.forename: Atsushi
authors.initials: A
authors.lastname: Sunahara
authors.forename: Tomoharu
authors.initials: T
authors.lastname: Okuno
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Ueda
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Ando
authors.forename: Yezheng
authors.initials: Y
authors.lastname: Tao
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Shimada
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Hashimoto
authors.forename: Michiteru
authors.initials: M
authors.lastname: Yamaura
authors.forename: Keisuke
authors.initials: K
authors.lastname: Shigemori
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Nakai
authors.forename: Keiji
authors.initials: K
authors.lastname: Nagai
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Norimatsu
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nishikawa
authors.forename: Noriaki
authors.initials: N
authors.lastname: Miyanaga
authors.forename: Yasukazu
authors.initials: Y
authors.lastname: Izawa
authors.forename: Kunioki
authors.initials: K
authors.lastname: Mima