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Titolo:
A COMPARATIVE-STUDY OF X-RAY-EMISSION FROM LASER SPOTS IN LASER-HEATED HOHLRAUMS RELATIVE TO SPOTS ON SIMPLE DISK TARGETS
Autore:
ZE F; LANGER SH; KAUFFMAN RL; KILKENNY JD; LANDEN O; RESS D; ROSEN MD; SUTER LJ; WALLACE RJ; WIEDWALD JD;
Indirizzi:
LAWRENCE LIVERMORE NATL LAB,POB 808 LIVERMORE CA 94550
Titolo Testata:
Physics of plasmas
fascicolo: 3, volume: 4, anno: 1997,
pagine: 778 - 787
SICI:
1070-664X(1997)4:3<778:ACOXFL>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
INERTIAL CONFINEMENT FUSION; MU-M; CAVITIES; PLASMAS; SPECTRA; LIGHT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
F. Ze et al., "A COMPARATIVE-STUDY OF X-RAY-EMISSION FROM LASER SPOTS IN LASER-HEATED HOHLRAUMS RELATIVE TO SPOTS ON SIMPLE DISK TARGETS", Physics of plasmas, 4(3), 1997, pp. 778-787

Abstract

In this paper we report the results of experiments that compare the x-ray emission from a laser spot in a radiation-filled hohlraum to thatfrom a similar laser spot on a simple disk target. The studies were done using the Nova laser facility [J. D. Lindl, Phys. Plasmas 2,3933 (1995)] in its 0.35 mu m wavelength, 1 ns square pulse configuration. Focal spot intensities were 2-3.5x10(15) W/cm(2). X-ray images measuredx-ray conversion in a hohlraum and from an isolated disk simultaneously. A laser spot inside a hohlraum emitted more x rays, after subtracting the background emission from the hohlraum walls, than a spot on a disk. Numerical models suggest the enhanced spot emission inside the hohlraum is due to an increase in lateral transport relative to the disk. Filamentation in the hohlraum will also increase the spot size. Themodels agree fairly well with the results on spot spreading but do not explain the overall increase in conversion efficiency. (C) 1997 American Institute of Physics.

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Documento generato il 22/09/20 alle ore 17:02:10