Generation of thermal x-ray radiation in high-Z cavities using high-power glass laser beam

Y. B.S.R. Prasad; A. S. Joshi; V. K. Senecha; M. P. Kamath; P. Khare; H. C. Pant

doi:10.1117/12.536761

12 December 2003 Generation of thermal x-ray radiation in high-Z cavities using high-power glass laser beam

Y. B.S.R. Prasad, A. S. Joshi, V. K. Senecha, M. P. Kamath, P. Khare, H. C. Pant

Proceedings Volume 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter; (2003) https://doi.org/10.1117/12.536761
Event: ECLIM 2002: 27th European conference on Laser Interaction with Matter, 2002, Moscow, Russian Federation

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.

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Y. B.S.R. Prasad, A. S. Joshi, V. K. Senecha, M. P. Kamath, P. Khare, and H. C. Pant "Generation of thermal x-ray radiation in high-Z cavities using high-power glass laser beam", Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); https://doi.org/10.1117/12.536761

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