K-shell radiation physics in low- to moderate-atomic-number z-pinch plasmas on the Z accelerator

B. Jones, C. Deeney, C. A. Coverdale, P. D. LePell, J. L. McKenney, J. P. Apruzese, J. W. Thornhill, K. G. Whitney, R. W. Clark, A. L. Velikovich, J. Davis, Y. Maron, V. Kantsyrev, A. Safronova, V. I. Oreshkin

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Dense z-pinches produced by 100 ns implosions of wire arrays or gas puffs produce substantial soft X-ray power. One class of z-pinch radiation sources includes low- to moderate-atomic-number K-shell radiators, such as aluminum and iron. These loads are designed for 1-10 keV K-shell X-ray generation, and offer opportunities for crystal spectroscopy that can reveal fundamental properties of the plasma when studied using plasma spectroscopic modeling. Typically these plasmas are characterized by ion densities of ∼1020 cm-3, diameters of 1-5 mm, electron temperatures up to several keV, and a range of opacities of the K-shell lines. Measurements from wire arrays on Sandia's 20 MA Z accelerator are presented along with collisional radiative and hydrodynamic simulations. The impact of opacity and 3D structure on non-LTE, non-diffusive radiation transport and X-ray production is discussed.

Original languageEnglish
Pages (from-to)341-348
Number of pages8
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume99
Issue number1-3
DOIs
Publication statusPublished - 1 May 2006
Externally publishedYes

Keywords

  • K-shell X-ray production and spectroscopy
  • Opacity
  • Z-pinch plasma

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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    Jones, B., Deeney, C., Coverdale, C. A., LePell, P. D., McKenney, J. L., Apruzese, J. P., Thornhill, J. W., Whitney, K. G., Clark, R. W., Velikovich, A. L., Davis, J., Maron, Y., Kantsyrev, V., Safronova, A., & Oreshkin, V. I. (2006). K-shell radiation physics in low- to moderate-atomic-number z-pinch plasmas on the Z accelerator. Journal of Quantitative Spectroscopy and Radiative Transfer, 99(1-3), 341-348. https://doi.org/10.1016/j.jqsrt.2005.05.027