TY - GEN
T1 - Rayleigh-taylor instability and its reduction in laser-accelerated targets
AU - Shiraga, H.
AU - Shigemori, K.
AU - Nakai, M.
AU - Sakaiya, T.
AU - Fujioka, S.
AU - Tamari, Y.
AU - Azechi, H.
AU - Nishihara, K.
AU - Sunahara, A.
AU - Nagatomo, H.
AU - Ikegawa, T.
AU - Ohnishi, N.
AU - Nagai, K.
AU - Norimats, T.
AU - Yamanaka, T.
PY - 2004
Y1 - 2004
N2 - Rayleigh-Taylor (RT) instability is of great importance in laser fusion because its growth degrades integrity of the imploding shell and may lower the density of the imploded core plasma. The dispersion relation of RT growth rate described by the modified Bodner-Takabe formula have been intensively investigated with Gekko-XII-HIPER laser at ILE, Osaka University. The growth rate is strongly dependent on the density structure of the accelerated target, and hence, there is a possibility to reduce RT growth by controlling the energy transport in the laser-driven target. We recently demonstrated two types of technique to reduce RT growth: one is double ablation in which radiation transport is utilized, and the other is two-color laser irradiation in which induced nonlocal electron transport is enhanced. Both of them will be effective in reducing the RT instability growth in inertial fusion targets.
AB - Rayleigh-Taylor (RT) instability is of great importance in laser fusion because its growth degrades integrity of the imploding shell and may lower the density of the imploded core plasma. The dispersion relation of RT growth rate described by the modified Bodner-Takabe formula have been intensively investigated with Gekko-XII-HIPER laser at ILE, Osaka University. The growth rate is strongly dependent on the density structure of the accelerated target, and hence, there is a possibility to reduce RT growth by controlling the energy transport in the laser-driven target. We recently demonstrated two types of technique to reduce RT growth: one is double ablation in which radiation transport is utilized, and the other is two-color laser irradiation in which induced nonlocal electron transport is enhanced. Both of them will be effective in reducing the RT instability growth in inertial fusion targets.
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M3 - Conference contribution
AN - SCOPUS:19944430602
SN - 0894486861
SN - 9780894486869
T3 - Inertial Fusion Sciences and Applications 2003
SP - 115
EP - 120
BT - Inertial Fusion Sciences and Applications 2003
A2 - Hammel, B.A.
A2 - Meyerhofer, D.D.
A2 - Meyer-ter-Vehn, J.
T2 - Third International Conference on Inertial Fusion Sciences and Applications, IFSA 2003
Y2 - 7 September 2003 through 12 September 2003
ER -