X-Ray Line Measurements with High Efficiency Bragg Crystals [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2004. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- PDF-file: 10 pages; size: 1.4 Mbytes
- Additional Creators:
- Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- We have studied the focusing properties of two highly oriented pyrolitic graphite (HOPG) spectrometers, which differ in the degree of the mosaic spread: ZYA with a low mosaic spread (γ=0.4 degrees) and ZYH with a large mosaic spread (γ=3.5 degrees). In order to assess the crystal performance for a variety of different experiments, various Kα and Kβ x-ray lines have been produced using a high-intensity (≈>10¹⁷ W/cm²) short-pulse (≈ 100 fs) laser beam focused onto Ti, V, Zn, and Cu foils. The measured spectral resolution of the HOPG crystals in both first and second order diffraction has been compared with theoretical predictions. Using known values for the peak reflectivity of HOPG crystals, we have also computed Kα x-ray conversion efficiencies of Ti, V, Zn, and Cu. These results are important to estimate the optimal conditions under which different types of HOPG monochromators can be used for the detection of weak x-ray signals as the one encountered in x-ray Thomson/Compton scattering experiments.
- Published through SciTech Connect., 04/01/2004., "ucrl-conf-203748", Presented at: 15th Topical Conference on High-Temperature Diagnostics, San Diego, CA, United States, Apr 19 - Apr 22, 2004., and Knight, J; Campbell, K; Landen, O; Glenzer, S; Gregori, G; Pak, A.
- Funding Information:
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