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Titolo:
ABSORPTION EXPERIMENTS ON X-RAY-HEATED MID-Z CONSTRAINED SAMPLES
Autore:
PERRY TS; SPRINGER PT; FIELDS DF; BACH DR; SERDUKE FJD; IGLESIAS CA; ROGERS FJ; NASH JK; CHEN MH; WILSON BG; GOLDSTEIN WH; ROZSYNAI B; WARD RA; KILKENNY JD; DOYAS R; DASILVA LB; BACK CA; CAUBLE R; DAVIDSON SJ; FOSTER JM; SMITH CC; BARSHALOM A; LEE RW;
Indirizzi:
LAWRENCE LIVERMORE NATL LAB,POB 808 LIVERMORE CA 94550 ATOM WEAPONS ESTAB READING RG7 4PR BERKS ENGLAND SOREQ NUCL RES CTR IL-81800 YAVNE ISRAEL UNIV CALIF BERKELEY,DEPT PHYS BERKELEY CA 94720
Titolo Testata:
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
fascicolo: 5, volume: 54, anno: 1996,
pagine: 5617 - 5631
SICI:
1063-651X(1996)54:5<5617:AEOXMC>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPECTROSCOPY; PLASMA; OPACITY; SPECTRA; FOILS; HOT; GERMANIUM; ALUMINUM; IRON; FLUX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
T.S. Perry et al., "ABSORPTION EXPERIMENTS ON X-RAY-HEATED MID-Z CONSTRAINED SAMPLES", Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 54(5), 1996, pp. 5617-5631

Abstract

Results of a niobium absorption experiment are presented that represent a major step in the development of techniques necessary for the quantitative characterization of hot, dense matter. The general requirements for performing quantitative analyses of absorption spectra are discussed. Hydrodynamic simulations are used to illustrate the behavior of tamped x-ray-heated matter and to indicate potential two-dimensionalproblems inherent in the technique. The absorption spectrum of a low-Z material, in this case aluminum, mixed with niobium provides a temperature diagnostic, which together with radiography as a density diagnostic fully characterizes the sample. A discussion is presented of opacity calculations and a comparison to the measurements is given that illustrates the need for experiments to provide a critical test of theory. The experimental technique is placed in context with a review of previous measurements using absorption spectroscopy to probe hot, dense matter. It is shown that the overall experimental concepts, although understood, were not always achieved in previous experiments.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 16:46:16