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Generation of rotation and shear flow in an imploding liner

Abstract

There exist several techniques that can set the liner into rotation and/or excite an embedded shear flow at any desired depth of the liner material. A common element of all these techniques is the use of properly used left-right asymmetric structures, situated either on the liner surface or embedded in the shell. Both rotation and shear flow get enhanced in the course of the liner implosion because of the angular momentum conservation. While fast enough rotation should stabilize the Rayleigh-Taylor instability near the turn-around point, the shear flow can also have a stabilizing effect on the interface. The specific model presented in the paper shows that a strong enough shear causes stabilization of a broad class of Rayleigh-Taylor perturbations. Thus, the use of left-right asymmetric structure for generation of rotation and shear flow is an interesting new option for improvement of the quality of the liner implosions. (J.U.). 4 figs., 12 refs.
Authors:
Hammer, J H; Ryutov, D D [1] 
  1. Lawrence Livermore National Lab., Livermore, CA (United States)
Publication Date:
Dec 31, 1996
Product Type:
Conference
Report Number:
INIS-CZ-0002; CONF-960610-
Reference Number:
SCA: 700411; PA: AIX-28:056099; EDB-97:114634; SN: 97001835078
Resource Relation:
Conference: BEAMS `96: 11. international conference on high-power particle beams, Prague (Czech Republic), 10-14 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Beams `96. Proceedings of the 11th international conference on high power particle beams. Vol. I; Jungwirth, K.; Ullschmied, J. [eds.]; PB: [684] p.
Subject:
70 PLASMA PHYSICS AND FUSION; LINERS; IMPLOSIONS; ABLATION; ASYMMETRY; CYLINDRICAL CONFIGURATION; HELMHOLTZ INSTABILITY; HOT PLASMA; INERTIAL CONFINEMENT; MAGNETIC COMPRESSION; RAYLEIGH-TAYLOR INSTABILITY; ROTATION; SHEAR
OSTI ID:
511291
Research Organizations:
Ceskoslovenska Akademie Ved, Prague (Czech Republic). Ustav Fyziky Plazmatu
Country of Origin:
Czech Republic
Language:
English
Other Identifying Numbers:
Other: ON: DE97637662; ISBN 80-902250-3-9; TRN: CZ9726711056099
Availability:
INIS; OSTI as DE97637662
Submitting Site:
INIS
Size:
pp. 178-181
Announcement Date:
Sep 04, 1997

Citation Formats

Hammer, J H, and Ryutov, D D. Generation of rotation and shear flow in an imploding liner. Czech Republic: N. p., 1996. Web.
Hammer, J H, & Ryutov, D D. Generation of rotation and shear flow in an imploding liner. Czech Republic.
Hammer, J H, and Ryutov, D D. 1996. "Generation of rotation and shear flow in an imploding liner." Czech Republic.
@misc{etde_511291,
title = {Generation of rotation and shear flow in an imploding liner}
author = {Hammer, J H, and Ryutov, D D}
abstractNote = {There exist several techniques that can set the liner into rotation and/or excite an embedded shear flow at any desired depth of the liner material. A common element of all these techniques is the use of properly used left-right asymmetric structures, situated either on the liner surface or embedded in the shell. Both rotation and shear flow get enhanced in the course of the liner implosion because of the angular momentum conservation. While fast enough rotation should stabilize the Rayleigh-Taylor instability near the turn-around point, the shear flow can also have a stabilizing effect on the interface. The specific model presented in the paper shows that a strong enough shear causes stabilization of a broad class of Rayleigh-Taylor perturbations. Thus, the use of left-right asymmetric structure for generation of rotation and shear flow is an interesting new option for improvement of the quality of the liner implosions. (J.U.). 4 figs., 12 refs.}
place = {Czech Republic}
year = {1996}
month = {Dec}
}