Rayleigh-taylor instability and its reduction in laser-accelerated targets

H. Shiraga, K. Shigemori, M. Nakai, T. Sakaiya, S. Fujioka, Y. Tamari, H. Azechi, K. Nishihara, A. Sunahara, H. Nagatomo, T. Ikegawa, N. Ohnishi, K. Nagai, T. Norimats, T. Yamanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationInertial Fusion Sciences and Applications 2003
EditorsB.A. Hammel, D.D. Meyerhofer, J. Meyer-ter-Vehn
Pages115-120
Number of pages6
Publication statusPublished - 2004 Dec 1
EventThird International Conference on Inertial Fusion Sciences and Applications, IFSA 2003 - Monterey, CA, United States
Duration: 2003 Sep 72003 Sep 12

Publication series

NameInertial Fusion Sciences and Applications 2003

Other

OtherThird International Conference on Inertial Fusion Sciences and Applications, IFSA 2003
CountryUnited States
CityMonterey, CA
Period03/9/703/9/12

ASJC Scopus subject areas

  • Engineering(all)

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    Shiraga, H., Shigemori, K., Nakai, M., Sakaiya, T., Fujioka, S., Tamari, Y., Azechi, H., Nishihara, K., Sunahara, A., Nagatomo, H., Ikegawa, T., Ohnishi, N., Nagai, K., Norimats, T., & Yamanaka, T. (2004). Rayleigh-taylor instability and its reduction in laser-accelerated targets. In B. A. Hammel, D. D. Meyerhofer, & J. Meyer-ter-Vehn (Eds.), Inertial Fusion Sciences and Applications 2003 (pp. 115-120). (Inertial Fusion Sciences and Applications 2003).