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Proceedings Paper

Toroidal crystal spectrometer for dense plasma diagnostic
Author(s): Francesca Pisani; Michel Koenig; Denis E. Desenne; Jean Michel Bruneau; Charles Reverdin; Tom A. Hall; Dimitri Batani; Jafar Al-Kuzee
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Paper Abstract

A toroidal crystal spectrometer was designed with the purpose of measuring the aluminum K-absorption edge shift, in the wavelength range around 7.9 angstroms, in highly compressed matter. The expected shift is about 100 mA (approximately 20 eV). The x-ray reflected from the crystal are focused onto a streak camera slit of 16 mm high and 100 micrometers width, to obtain a time resolved spectrum. High resolution value and dispersion of about 1 angstrom/16 mm on the detection window is hence required. A crystal with a toroidal surface is used to enhance the focusing power in the spatial dimension as in the spectral one. Numerical simulations are performed by means of 1D and 2D codes for the determination of the crystal characteristics like the dimension and the curvature radius with respect to the geometric constraints. Some results will be presented concerning the obtained spectra.

Paper Details

Date Published: 14 October 1997
PDF: 12 pages
Proc. SPIE 3157, Applications of X Rays Generated from Lasers and Other Bright Sources, (14 October 1997); doi: 10.1117/12.283998
Show Author Affiliations
Francesca Pisani, Ecole Polytechnique (France)
Michel Koenig, Ecole Polytechnique (France)
Denis E. Desenne, CEA/Limeil-Valenton (France)
Jean Michel Bruneau, CEA/Limeil-Valenton (France)
Charles Reverdin, CEA/Limeil-Valenton (France)
Tom A. Hall, Univ. of Essex (United Kingdom)
Dimitri Batani, Univ. di Milano (Italy)
Jafar Al-Kuzee, Univ. of Essex (United Kingdom)

Published in SPIE Proceedings Vol. 3157:
Applications of X Rays Generated from Lasers and Other Bright Sources
George A. Kyrala; Jean-Claude J. Gauthier, Editor(s)

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