Analysis of theM-shell spectra emitted by a short-pulse laser-created tantalum plasma

Autor:	Michel Busquet, M. Klapisch, J. C. Kieffer, Z. Jiang, C. Bauche-Arnoult, A. Bar-Shalom, A. Bachelier, C. Y. Côté
Rok vydání:	2000
Předmět:	Physics chemistry Thermodynamic equilibrium Tantalum Short pulse laser Ionic bonding chemistry.chemical_element Plasma Effective temperature Nanosecond Atomic physics Spectral line
Zdroj:	Physical Review E. 61:801-808
ISSN:	1095-3787 1063-651X
DOI:	10.1103/physreve.61.801
Popis:	The spectrum of tantalum emitted by a subpicosecond laser-created plasma, was recorded in the regions of the $3d\ensuremath{-}5f,$ $3d\ensuremath{-}4f,$ and $3d\ensuremath{-}4p$ transitions. The main difference with a nanosecond laser-created plasma spectrum is a broad understructure appearing under the $3d\ensuremath{-}5f$ transitions. An interpretation of this feature as a density effect is proposed. The supertransition array model is used for interpreting the spectrum, assuming local thermodynamic equilibrium (LTE) at some effective temperature. An interpretation of the $3d\ensuremath{-}4f$ spectrum using the more detailed unresolved transition array formalism, which does not assume LTE, is also proposed. Fitted contributions of the different ionic species differ slightly from the LTE-predicted values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ceb4a3b34579a46f6a11e002fae72830 https://doi.org/10.1103/physreve.61.801 Zobrazit plný text záznamu