Laser and Particle Beams

Table of Contents - 2007 - Volume 25, Issue 02  


High resolution X-ray emission spectra from picosecond laser irradiated Ge targets

J. Abdallah a1 , D. Batani a2c1 , T. Desai a2 , G. Lucchini a2 , A. Faenov a3 , T. Pikuz a3a4 , A. Magunov a3 and V. Narayanan a2
a1 T-4, Atomic and Optical Physics, Los Alamos National Laboratory, Los Alamos, New Mexico
a2 Dipartimento di Fisica “G.Occhialini”, Università di Milano-Bicocca, Milano, Italy
a3 Joint Institute for High Temperature, Russian Academy of Sciences, Moscow, Russia
a4 A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia

Article author query
abdallah j   [Google Scholar] 
batani d   [Google Scholar] 
desai t   [Google Scholar] 
lucchini g   [Google Scholar] 
faenov a   [Google Scholar] 
pikuz t   [Google Scholar] 
magunov a   [Google Scholar] 
narayanan v   [Google Scholar] 
 

Abstract

Investigations of a high resolution X-ray emission spectrum in the range 0.66–0.75 nm obtained by irradiating a Germanium target with high-power p-polarized, 40 picosecond laser radiation at 532 nm wavelength was done. Spectra in the wavelength region of 2l-4l′ and 2l-5l′ L-shell transitions in F-like, Ne-like and Na-like germanium ions were recorded using the FSSR-2D spectrometer equipped with a spherically bent quartz crystal with a spectral resolution λ/Δλ better than 5000. Spectral lines were compared with theoretical values obtained using the LANL plasma kinetic code ATOMIC. Fair agreement between experimental and theoretical spectral lines has been observed, which allowed to measure enough high bulk electron temperature values of 560 eV and electron density of [similar]1021 cm−3 in Ge plasma irradiated by rather small commercial high repetition rate Nd:YAG laser system.

(Received October 13 2006)
(Accepted February 15 2007)


Key Words: Laser-Plasmas; X-ray spectroscopy; Plasma Diagnostics.

Correspondence:
c1 Address correspondence and reprint requests to: D. Batani, Dipartimento di Fisica “G.Occhialini”, Università di Milano-Bicocca, Piazza della Scienza 3, 20126 Milano, Italy. E-mail: batani@mib.infn.it

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