NIST Home > PML > Radiation and Biomolecular Physics Division > Dosimetry Group > Spectrometry of X-Ray Beams Used for Calibrations
Calibrations
Summary:Spectrometry measurements in the x-ray calibration ranges have been undertaken using a high-resolution HPGe detector both in the direct beam and at 90 % using a Compton-scatter spectrometer.
Description:Pulse-height distributions were obtained for all the NIST and International Organization for Standardization (ISO) beams produced by the NIST 100 keV and 300 keV x-ray generators, and have been unfolded and are in the process of being tabulated. This was performed for a number of narrow-spectrum beam qualities (shown below) and used to calibrate a wavelength-dispersive crystal x-ray spectrograph used by Lawrence Livermore National Laboratory (LLNL) to diagnose laser-to-x-ray conversion efficiencies of laser-produced plasmas. |
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