Soft x-ray spectra produced by subpicosecond laser-double-pulses

Soft x-ray spectra generated on flat Al targets by a 500 fs KrF* laser pulse (intensity 5.3×1015 W/cm2), preceded by a prepulse of the same pulse duration, have been measured as a function of the pulse separation and the prepulse intensity. It was found that not only the total x-ray emission was muc...

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Veröffentlicht in:	Applied physics letters 1991-11, Vol.59 (21), p.2672-2674
Hauptverfasser:	TEUBNER, U, KÜHNLE, G, SCHÄFER, F. P
Format:	Artikel
Sprache:	eng
Schlagworte:	664200 - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-) 70 PLASMA PHYSICS AND FUSION TECHNOLOGY 700320 - Plasma Diagnostic Techniques & Instrumentation- (1992-) 700380 - Elementary & Classical Processes in Plasmas- (1992-) ATOMIC AND MOLECULAR PHYSICS CHEMICAL ANALYSIS ECONOMIC ANALYSIS ECONOMICS ELECTROMAGNETIC RADIATION Exact sciences and technology EXCIMER LASERS Fundamental areas of phenomenology (including applications) GAS LASERS INPUT-OUTPUT ANALYSIS IRRADIATION KRYPTON CHLORIDE LASERS LASER-PRODUCED PLASMA LASERS NONDESTRUCTIVE ANALYSIS Optics Physics PLASMA PULSED IRRADIATION RADIATIONS SPECTRA ULTRAVIOLET RADIATION X-RAY EMISSION ANALYSIS X-RAY SPECTRA
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Beschreibung
Zusammenfassung:	Soft x-ray spectra generated on flat Al targets by a 500 fs KrF* laser pulse (intensity 5.3×1015 W/cm2), preceded by a prepulse of the same pulse duration, have been measured as a function of the pulse separation and the prepulse intensity. It was found that not only the total x-ray emission was much stronger when the prepulse was present but, in particular, lines in the shorter wavelength region had a higher intensity than without prepulse, and were strongly dependent on the time separation between the prepulse and the main pulse.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.105902