L-shell spectroscopy of Au as a temperature diagnostic tool

E Träbert; S B Hansen; P Beiersdorfer; G V Brown; K Widmann; H-K Chung

doi:10.1063/1.2953443

L-shell spectroscopy of Au as a temperature diagnostic tool

Rev Sci Instrum. 2008 Oct;79(10):10E313. doi: 10.1063/1.2953443.

Authors

E Träbert¹, S B Hansen, P Beiersdorfer, G V Brown, K Widmann, H-K Chung

Affiliation

¹ High Temperature and Astrophysics Division, Lawrence Livermore National Laboratory, Livermore, California 94550-9234, USA. trabert1@llnl.gov

PMID: 19044475
DOI: 10.1063/1.2953443

Abstract

In order to develop plasma diagnostic for reduced-size hot Hohlraums under laser irradiation, we have studied the L-shell emission from highly charged gold ions in the SuperEBIT electron beam ion trap. The resolving power necessary to identify emission features from individual charge states in a picket-fence pattern has been estimated, and the observed radiation features have been compared with atomic structure calculations. We find that the strong 3d(5/2)-->2p(3/2) emission features are particularly useful in determining the charge state distribution and average ion charge Z, which are strongly sensitive to the electron temperature.