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Proceedings Paper

Generation of hard x-rays by a forsterite terawatt laser
Author(s): Mikhail B. Agranat; Nikolay E. Andreev; Sergei I. Ashitkov; Edward Boyle; Vladimir E. Fortov; Larry V. Knight; Andrey V. Ovchinnikov; Alexander P. Shevelko; Dmitry S. Sitnikov
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Paper Abstract

A compact, tabletop terawatt forsterite laser (1.24 μm /100 mJ/ 80 fs) is used for generation of fast hard x-ray radiation from laser-produced plasmas. Plasmas are created on massive solid Fe and Cu targets. X-ray radiation is studied using a focusing crystal von Hamos spectrometer with a CCD linear array as x-ray detector. High efficiency of the spectrometer in a wide spectral range allows us to record x-ray spectra by one laser shot. Intense Kα radiation is studied with high spectral resolution (λ/δλ~1000) at various focusing conditions: main laser radiation and second harmonic radiation. With a copper target the Kα radiation yield was equal to 4×109 photon/pulse in 4π steradian, that corresponds to conversion efficiency of 0.02%. Processes responsible for ultrafast hard x-ray radiation are discussed.

Paper Details

Date Published: 10 September 2005
PDF: 10 pages
Proc. SPIE 5918, Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, 59180O (10 September 2005); doi: 10.1117/12.619631
Show Author Affiliations
Mikhail B. Agranat, Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)
Nikolay E. Andreev, Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)
Sergei I. Ashitkov, Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)
Edward Boyle, Setpoint Spectrometers (United States)
Vladimir E. Fortov, Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)
Larry V. Knight, Brigham Young Univ. (United States)
Setpoint Spectrometers (United States)
Andrey V. Ovchinnikov, Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)
Alexander P. Shevelko, P.N. Lebedev Physical Institute (Russia)
Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)
Setpoint Spectrometers (United States)
Dmitry S. Sitnikov, Institute for High Energy Densities, Associated Institute for High Temperatures (Russia)


Published in SPIE Proceedings Vol. 5918:
Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II
George A. Kyrala; Jean-Claude J. Gauthier; Carolyn A. MacDonald; Ali M. Khounsary, Editor(s)

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