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Quantitative measurement of spectral distribution of soft X-ray emission from laser produced plasmas and estimation of X-ray conversion efficiency are reported. The X-ray emission from planar gold target irradiated by an Nd:glass laser was recorded using a high resolution transmission grating spectrograph. Spectral distribution of X-ray intensity was derived using calibrated film data and a deconvolution procedure to account for contribution of higher diffraction orders. Results of conversion efficiency per unit solid angle, at a laser intensity of ~4×1012 W/cm2 (λL = 1.054 μm), for 10< λ <80 Å and in the water window spectral region (23< λ< 44 Å) are presented. A three-fold increase in conversion efficiency was observed for second harmonic laser irradiation (λL = 0.527 μm) at an intensity of 8×1012 W/cm2
Published in:
Plasma Science, IEEE Transactions on
(Volume:29
,
Issue:
6
)
Date of Publication: Dec 2001
- Page(s):
- 960 - 964
- ISSN :
- 0093-3813
- INSPEC Accession Number:
- 7180280
- Digital Object Identifier :
- 10.1109/27.974985
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 07 August 2002
- Issue Date :
- Dec 2001
- Sponsored by :
- IEEE Nuclear and Plasma Sciences Society
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