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Titolo:
SUPERNOVA-RELEVANT HYDRODYNAMIC INSTABILITY EXPERIMENTS ON THE NOVA LASER
Autore:
KANE J; ARNETT D; REMINGTON BA; GLENDINNING SG; CASTOR J; WALLACE R; RUBENCHIK A; FRYXELL BA;
Indirizzi:
UNIV ARIZONA TUCSON AZ 85721 LAWRENCE LIVERMORE NATL LAB LIVERMORE CA 94550 UNIV CALIF DAVIS DAVIS CA 95616 GEORGE MASON UNIV,INST COMPUTAT SCI & INFORMAT FAIRFAX VA 22030
Titolo Testata:
The Astrophysical journal
fascicolo: 2, volume: 478, anno: 1997,
parte:, 2
pagine: 75 -
SICI:
0004-637X(1997)478:2<75:SHIEOT>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAYLEIGH-TAYLOR; LINE-PROFILES; SN-1987A; 1987A; FRONTS; NICKEL; LIGHT; FLOW;
Keywords:
HYDRODYNAMICS; INSTABILITIES; SUPERNOVAE, GENERAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
J. Kane et al., "SUPERNOVA-RELEVANT HYDRODYNAMIC INSTABILITY EXPERIMENTS ON THE NOVA LASER", The Astrophysical journal, 478(2), 1997, pp. 75

Abstract

Supernova 1987A focused attention on the critical role of hydrodynamic instabilities in the evolution of supernovae. To test the modeling of these instabilities, we are developing laboratory experiments of hydrodynamic mixing under conditions relevant to supernovae. The target consists of a two-layer planar package composed of 85 mu m Cu backed by500 mu m CH2, having a single-mode sinusoidal perturbation at the interface, with lambda = 200 mu m and eta(0) = 20 mu m. The Nova Laser isused to generate a 10-15 Mbar [(10-15) x 10(12) dyne cm(2)] shock at the interface, which triggers perturbation growth as a result of the Richtmyer-Meshkov instability, followed by the Rayleigh-Taylor instability as the interface decelerates. This resembles the hydrodynamics of the He-H interface of a Type II supernova at intermediate times, up toa few times 10(3) s. The experiment is modeled using the hydrodynamics codes HYADES and GALE and the supernova code PROMETHEUS. Results of the experiments and simulations are presented.

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Documento generato il 26/11/20 alle ore 09:06:55