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Title: A technique for measuring the quality of an elliptically bent pentaerythritol [PET(002)] crystal

Abstract

Here, we present a technique for determining the X-ray spectral quality from each region of an elliptically curved PET(002) crystal. The investigative technique utilizes the shape of the crystal rocking curve which changes significantly as the radius of curvature changes. This unique quality information enables the spectroscopist to verify where in the spectral range that the spectrometer performance is satisfactory and where there are regions that would show spectral distortion. A collection of rocking curve measurements for elliptically curved PET(002) has been built up in our X-ray laboratory. The multi-lamellar model from the XOP software has been used as a guide and corrections were applied to the model based upon measurements. But, the measurement of RI at small radius of curvature shows an anomalous behavior; the multi-lamellar model fails to show this behavior. The effect of this anomalous RI behavior on an X-ray spectrometer calibration is calculated. It is compared to the multi-lamellar model calculation which is completely inadequate for predicting RI for this range of curvature and spectral energies.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [2];  [2];  [2]; ORCiD logo [2]
  1. National Security Technologies, LLC, Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1390019
Report Number(s):
LLNL-CONF-737663
Journal ID: ISSN 0034-6748; RSINAK
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: Presented at: 21st Topical Conference on High-Temperature Plasma Diagnostics, Madison, WI (United States), 5-9 Jun 2016; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION

Citation Formats

Haugh, M. J., Jacoby, K. D., Barrios, M. A., Thorn, D., Emig, J. A., and Schneider, M. B. A technique for measuring the quality of an elliptically bent pentaerythritol [PET(002)] crystal. United States: N. p., 2016. Web. doi:10.1063/1.4961277.
Haugh, M. J., Jacoby, K. D., Barrios, M. A., Thorn, D., Emig, J. A., & Schneider, M. B. A technique for measuring the quality of an elliptically bent pentaerythritol [PET(002)] crystal. United States. doi:10.1063/1.4961277.
Haugh, M. J., Jacoby, K. D., Barrios, M. A., Thorn, D., Emig, J. A., and Schneider, M. B. Tue . "A technique for measuring the quality of an elliptically bent pentaerythritol [PET(002)] crystal". United States. doi:10.1063/1.4961277. https://www.osti.gov/servlets/purl/1390019.
@article{osti_1390019,
title = {A technique for measuring the quality of an elliptically bent pentaerythritol [PET(002)] crystal},
author = {Haugh, M. J. and Jacoby, K. D. and Barrios, M. A. and Thorn, D. and Emig, J. A. and Schneider, M. B.},
abstractNote = {Here, we present a technique for determining the X-ray spectral quality from each region of an elliptically curved PET(002) crystal. The investigative technique utilizes the shape of the crystal rocking curve which changes significantly as the radius of curvature changes. This unique quality information enables the spectroscopist to verify where in the spectral range that the spectrometer performance is satisfactory and where there are regions that would show spectral distortion. A collection of rocking curve measurements for elliptically curved PET(002) has been built up in our X-ray laboratory. The multi-lamellar model from the XOP software has been used as a guide and corrections were applied to the model based upon measurements. But, the measurement of RI at small radius of curvature shows an anomalous behavior; the multi-lamellar model fails to show this behavior. The effect of this anomalous RI behavior on an X-ray spectrometer calibration is calculated. It is compared to the multi-lamellar model calculation which is completely inadequate for predicting RI for this range of curvature and spectral energies.},
doi = {10.1063/1.4961277},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {Tue Aug 23 00:00:00 EDT 2016},
month = {Tue Aug 23 00:00:00 EDT 2016}
}

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Works referenced in this record:

X-Ray Interactions: Photoabsorption, Scattering, Transmission, and Reflection at E = 50-30,000 eV, Z = 1-92
journal, July 1993

  • Henke, B. L.; Gullikson, E. M.; Davis, J. C.
  • Atomic Data and Nuclear Data Tables, Vol. 54, Issue 2, p. 181-342
  • DOI: 10.1006/adnd.1993.1013