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Density diagnostic of highly ionized samarium laser produced plasma using Ni-like spatially resolved spectra

Published online by Cambridge University Press:  05 January 2011

E. Louzon ,
Z. Henis ,
I. Levy ,
G. Hurvitz ,
Y. Ehrlich ,
M. Frankel ,
S. Maman ,
E. Raicher ,
A. Malka  and
P. Mandelbaum
...Show all authors
E. Louzon*
Affiliation:
Soreq Research Center, Yavne, Israel
Z. Henis
Affiliation:
Soreq Research Center, Yavne, Israel
I. Levy
Affiliation:
Soreq Research Center, Yavne, Israel
G. Hurvitz
Affiliation:
Soreq Research Center, Yavne, Israel
Y. Ehrlich
Affiliation:
Soreq Research Center, Yavne, Israel
M. Frankel
Affiliation:
Soreq Research Center, Yavne, Israel
S. Maman
Affiliation:
Soreq Research Center, Yavne, Israel
E. Raicher
Affiliation:
Soreq Research Center, Yavne, Israel
A. Malka
Affiliation:
Soreq Research Center, Yavne, Israel
P. Mandelbaum
Affiliation:
Jerusalem College of Engineering, Ramat Beth Hakerem, Jerusalem, Israel
A. Zigler
Affiliation:
Racah Institute of Physics, Hebrew University, Jerusalem, Israel
*
Address correspondence and reprint requests to: Einat Louzon, Applied Physics Department, Soreq Research Center, Yavne 81800, Israel. E-mail: einatlouzon@yahoo.com
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Abstract

Detailed spectroscopic identification and analysis of lines emitted by Ni-like ions may infer on plasma parameters, such as electron density, temperature, and ionization state. Spatially, resolved X-ray spectra of samarium laser produced plasma were recorded in the 7 to10 Å wavelength range. Measured line intensity ratios of Ni-like 3d-5f, 3p-4d, 3p-4s, and 3s-4p transitions were used for electron density diagnostic as a function of the distance from the target. Calculations using Hebrew University Lawrence Livermore Atomic Code show that these ratios are not very sensitive to the electron temperature in the range from 500 to 1000 eV. Self-absorption of some lines is found to be important at electron densities higher than 1021cm−3. The inferred ranges of electron density and temperature are found to be consistent with results of hydrodynamic simulations and models of ionization in plasma.

Keywords

LaserPlasmaX-ray diagnosticX-ray spectrum
Type
Research Article
Information
Laser and Particle Beams , Volume 29 , Issue 1 , March 2011 , pp. 61 - 67
Copyright
Copyright © Cambridge University Press 2010

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