Dynamics of picosecond-laser-pulse plasmas determined from the spectral shifts of reflected probe pulses

The evolution of density profiles in plasmas produced by 10{sup 14}-W cm{sup {minus}2}, 1-ps, 580-nm-wavelength laser pulses has been determined from spectral shifts imposed on a reflected picosecond probe pulse. The shifts are caused by two mechanisms: hydrodynamic expansion and ionization front mo...

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Veröffentlicht in:	Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1992-10, Vol.46 (8), p.5089-5100
Hauptverfasser:	LANDEN, O. L, ALLEY, W. E
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY 700320 - Plasma Diagnostic Techniques & Instrumentation- (1992-) DISTRIBUTION Exact sciences and technology EXPANSION IONIZATION LASER-PRODUCED PLASMA Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges PLASMA PLASMA DENSITY PLASMA DIAGNOSTICS PLASMA EXPANSION Plasma production and heating PULSE RISE TIME PULSES SPECTRAL SHIFT TIMING PROPERTIES
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Zusammenfassung:	The evolution of density profiles in plasmas produced by 10{sup 14}-W cm{sup {minus}2}, 1-ps, 580-nm-wavelength laser pulses has been determined from spectral shifts imposed on a reflected picosecond probe pulse. The shifts are caused by two mechanisms: hydrodynamic expansion and ionization front motion. Both time-resolved expansion velocities and ionization rates are inferred from the spectral shifts and are compared to one-dimensional hydrodynamic simulations.
ISSN:	1050-2947 1094-1622
DOI:	10.1103/physreva.46.5089