title: Suppression of the Rayleigh-Taylor instability due to self-radiation in a multiablation target.
abstract: A scheme to suppress the Rayleigh-Taylor instability has been investigated for a direct-drive inertial fusion target. In a high-Z doped-plastic target, two ablation surfaces are formed separately-one driven by thermal radiation and the other driven by electron conduction. The growth of the Rayleigh-Taylor instability is significantly suppressed on the radiation-driven ablation surface inside the target due to the large ablation velocity and long density scale length. A significant reduction of the growth rate was observed in simulations and experiments using a brominated plastic target. A new direct-drive pellet was designed using this scheme.
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: Atsushi
authors.initials: A
authors.lastname: Sunahara
authors.forename: Katsunobu
authors.initials: K
authors.lastname: Nishihara
authors.forename: Naofumi
authors.initials: N
authors.lastname: Ohnishi
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Johzaki
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shiraga
authors.forename: Keisuke
authors.initials: K
authors.lastname: Shigemori
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Nakai
authors.forename: Tadashi
authors.initials: T
authors.lastname: Ikegawa
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Murakami
authors.forename: Keiji
authors.initials: K
authors.lastname: Nagai
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Norimatsu
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Azechi
authors.forename: Tatsuhiko
authors.initials: T
authors.lastname: Yamanaka