7th International Conference on X-Ray Lasers

J. Phys. IV France 11 (2001) Pr2-555-Pr2-558
DOI: 10.1051/jp4:20012109

Estimation of the electron temperature in a Li₂C0₃ ablative capillary discharge

P. Vrba¹, M. Vrbová², M. Hebenstreit³, T. Neger³, P. Pöckl³, N. A. Bobrova⁴ and P. V. Sasorov<sup>4

1</sup>  lnstitute of Plasma Physics, AS CR, Za Slovankou 3, 18221 Prague 8, Czech Republic
²  Czech Technical University, FNSPE, Brehová 7, 11519 Prague 1, Czech Republic
³  Technische Universitaet Graz, Petersgasse 16, 8010 Graz, Austria
⁴  Institute of Theoretical and Experimental Physics, Bolshaya Cheremuskinskaya 25, Moscow, Russia

Abstract
The electron temperature in a Li₂CO₃ ablative capillary discharge has been estimated on the base of soft x-ray spectral line intensity measurements and of evaluations of steady-state ionization and population fractions for the mixture of lithium, carbon and oxygen. The discrepancy in the peak temperatures, estimated from spectral measurements and calculated by one-dimensional MHD and time dependent collisional-radiative codes, is explained by an initial overheating of the plasma electrons.

© EDP Sciences 2001