Stability analysis of unsteady ablation fronts

The linear stability analysis of unsteady ablation fronts is carried out for a semi-infinite uniform medium. For a laser accelerated target, it is shown that a properly selected modulation of the laser intensity can lead to the dynamic stabilization or growth-rate reduction of a large portion of the...

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Veröffentlicht in:	Physical review letters 1993-11, Vol.71 (19), p.3131-3134
Hauptverfasser:	BETTI, R, MCCRORY, R. L, VERDON, C. P
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY 700340 - Plasma Waves, Oscillations, & Instabilities- (1992-) 700350 - Plasma Production, Heating, Current Drive, & Interactions- (1992-) ABLATION ACCELERATION CORRELATIONS DATA ELECTROMAGNETIC RADIATION Exact sciences and technology INFORMATION INHIBITION INSTABILITY INSTABILITY GROWTH RATES LASER RADIATION Laser-plasma interactions LASERS MODULATION NUMERICAL DATA Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges PLASMA INSTABILITY Plasma macroinstabilities (hydromagnetic, eg, kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.) Plasma macroinstabilities (magnetohydrodynamic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, rayleigh-taylor, etc.) RADIATIONS TARGETS THEORETICAL DATA Waves, oscillations, and instabilities in plasmas and intense beams
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Beschreibung
Zusammenfassung:	The linear stability analysis of unsteady ablation fronts is carried out for a semi-infinite uniform medium. For a laser accelerated target, it is shown that a properly selected modulation of the laser intensity can lead to the dynamic stabilization or growth-rate reduction of a large portion of the unstable spectrum. The theory is in qualitative agreement with the numerical results obtained by using the two-dimensional hydrodynamic code ORCHID.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.71.3131