Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
TIME-RESOLVED X-RAY SPECTROSCOPY OF DEEPLY BURIED TRACER LAYERS AS A DENSITY AND TEMPERATURE DIAGNOSTIC FOR THE FAST IGNITER
Autore:
KOCH JA; BACK CA; BROWN C; ESTABROOK K; HAMMEL BA; HATCHETT SP; KEY MH; KILKENNY JD; LANDEN OL; LEE RW; MOODY JD; OFFENBERGER AA; PENNINGTON D; FERRY MD; TABAK M; YANOVSKY V; WALLACE RJ; WHARTON KB; WILKS SC;
Indirizzi:
LAWRENCE LIVERMORE NATL LAB,POB 808,L-473 LIVERMORE CA 94550
Titolo Testata:
Laser and particle beams
fascicolo: 1, volume: 16, anno: 1998,
pagine: 225 - 232
SICI:
0263-0346(1998)16:1<225:TXSODB>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
LASER-PRODUCED PLASMA; PULSES; AMPLIFICATION; COMPRESSION; GENERATION; RADIATION; TRANSPORT; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
J.A. Koch et al., "TIME-RESOLVED X-RAY SPECTROSCOPY OF DEEPLY BURIED TRACER LAYERS AS A DENSITY AND TEMPERATURE DIAGNOSTIC FOR THE FAST IGNITER", Laser and particle beams, 16(1), 1998, pp. 225-232

Abstract

The fast ignitor concept for inertial confinement fusion relies on the generation of hot electrons, produced by a short-pulse ultrahigh intensity laser, which propagate through high-density plasma to deposit their energy in the compressed fuel core and heat it to ignition. In preliminary experiments designed to investigate deep heating of high-density matter, we used a 20 joule, 0.5-30 ps laser to heat solid targets, and used emission spectroscopy to measure plasma temperatures and densities achieved at large depths (2-20 microns) away from the initial target surface. The targets consisted of an Al tracer layer buried within a massive CH slab; H-like and He-like line emission was then used to diagnose plasma conditions. We observe spectra from tracer layers buried up to 20 microns deep, measure emission durations of up to 200 ps, measure plasma temperatures up to T-e = 650 eV, and measure electron densities above 10(23) cm(-3). Analysis is in progress, but the dataare in reasonable agreement with heating simulations when space-charge induced inhibition is included in hot-electron transport, and this supports the conclusion that the deep heating is initiated by hot electrons.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 08:55:00