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Proceedings Paper

Generation of thermal x-ray radiation in high-Z cavities using high-power glass laser beam
Author(s): Y. B.S.R. Prasad; A. S. Joshi; V. K. Senecha; M. P. Kamath; P. Khare; H. C. Pant
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Paper Abstract

Thermal x-ray radiation was generated and confined inside a spherical gold cavity of 1.2 mm diameter that was heated by a 50 J/1 ns laser pulse at 1.053 μm wavelength. The laser intensity on the inner surface of the cavity was ~5x1013 W/cm2. The x-ray spectra recorded on high sensitivity x-ray film using a transmission grating spectrometer (TGS) positioned normal to the laser beam direction were analyzed to obtain the radiation temperature of the cavity. The unfolded x-ray spectra from the cavity have most of the emission between 15 - 60 Å with peak emission at 20 - 35 Å. The Planckian spectral fit to the x-ray spectra suggests a peak blackbody temperature of 90 eV inside the cavity.

Paper Details

Date Published: 12 December 2003
PDF: 8 pages
Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); doi: 10.1117/12.536761
Show Author Affiliations
Y. B.S.R. Prasad, Ctr. for Advanced Technology (India)
A. S. Joshi, Ctr. for Advanced Technology (India)
V. K. Senecha, Ctr. for Advanced Technology (India)
M. P. Kamath, Ctr. for Advanced Technology (India)
P. Khare, Ctr. for Advanced Technology (India)
H. C. Pant, Ctr. for Advanced Technology (India)

Published in SPIE Proceedings Vol. 5228:
ECLIM 2002: 27th European Conference on Laser Interaction with Matter
Oleg N. Krokhin; Sergey Yu. Gus'kov; Yury A. Merkul'ev, Editor(s)

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