Absorption spectroscopy of a radiatively heated samarium plasma

Autor:	F. Perrot, H. Merdji, C. Chenais-Popovics, J. C. Gauthier, Thomas Blenski, T. Mißalla, K. Eidmann
Rok vydání:	1998
Předmět:	Physics Samarium Absorption spectroscopy chemistry Opacity Absorption band Ionization Radiative transfer chemistry.chemical_element Plasma Atomic physics Absorption (electromagnetic radiation)
Zdroj:	Physical Review E. 57:1042-1046
ISSN:	1095-3787 1063-651X
DOI:	10.1103/physreve.57.1042
Popis:	We present measurements of the samarium $(Z=62)$ $M$-shell absorption band around 11 \AA{} (1.1 keV) at electron temperatures between 5 and 20 eV. Using point projection absorption spectroscopy, we measured the absolute transmission of an x-ray probe beam through a radiatively heated samarium plasma at different drive temperatures. The measurements show two principal absorption features corresponding to the spin-orbit-split $3d\ensuremath{-}4f$ transitions of Sm IV--Sm X ions. The influence of the heating on the spectral opacity shape was characterized by a shift of the absorption features to higher energy for a hotter plasma. The data are compared with calculations done with the superconfiguration code SCO for different plasma temperatures. The temperature and average ionization inferred from the analysis of the experiment are compared to radiative hydrodynamic simulations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ed4de96920033fcdea10450b1133084b https://doi.org/10.1103/physreve.57.1042 Zobrazit plný text záznamu