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Title: Reproducibility and calibration of MMC-based high-resolution gamma detectors

Abstract

We describe a prototype γ-ray detector based on a metallic magnetic calorimeter with an energy resolution of 46 eV at 60 keV and a reproducible response function that follows a simple second-order polynomial. The simple detector calibration allows adding high-resolution spectra from different pixels and different cool-downs without loss in energy resolution to determine γ-ray centroids with high accuracy. As an example of an application in nuclear safeguards enabled by such a γ-ray detector, we discuss the non-destructive assay of {sup 242}Pu in a mixed-isotope Pu sample.

Authors:
;  [1]; ; ; ; ; ;  [2]
  1. Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States)
  2. Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227, D-69120 Heidelberg (Germany)
Publication Date:
OSTI Identifier:
22590573
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 2; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; CALIBRATION; ENERGY RESOLUTION; PLUTONIUM 242; POLYNOMIALS; RESPONSE FUNCTIONS; SAFEGUARDS; SHOWER COUNTERS; SPECTRA

Citation Formats

Bates, C. R., Friedrich, S., E-mail: friedrich1@llnl.gov, Pies, C., Kempf, S., Hengstler, D., Fleischmann, A., Gastaldo, L., and Enss, C. Reproducibility and calibration of MMC-based high-resolution gamma detectors. United States: N. p., 2016. Web. doi:10.1063/1.4958699.
Bates, C. R., Friedrich, S., E-mail: friedrich1@llnl.gov, Pies, C., Kempf, S., Hengstler, D., Fleischmann, A., Gastaldo, L., & Enss, C. Reproducibility and calibration of MMC-based high-resolution gamma detectors. United States. doi:10.1063/1.4958699.
Bates, C. R., Friedrich, S., E-mail: friedrich1@llnl.gov, Pies, C., Kempf, S., Hengstler, D., Fleischmann, A., Gastaldo, L., and Enss, C. Mon . "Reproducibility and calibration of MMC-based high-resolution gamma detectors". United States. doi:10.1063/1.4958699.
@article{osti_22590573,
title = {Reproducibility and calibration of MMC-based high-resolution gamma detectors},
author = {Bates, C. R. and Friedrich, S., E-mail: friedrich1@llnl.gov and Pies, C. and Kempf, S. and Hengstler, D. and Fleischmann, A. and Gastaldo, L. and Enss, C.},
abstractNote = {We describe a prototype γ-ray detector based on a metallic magnetic calorimeter with an energy resolution of 46 eV at 60 keV and a reproducible response function that follows a simple second-order polynomial. The simple detector calibration allows adding high-resolution spectra from different pixels and different cool-downs without loss in energy resolution to determine γ-ray centroids with high accuracy. As an example of an application in nuclear safeguards enabled by such a γ-ray detector, we discuss the non-destructive assay of {sup 242}Pu in a mixed-isotope Pu sample.},
doi = {10.1063/1.4958699},
journal = {Applied Physics Letters},
number = 2,
volume = 109,
place = {United States},
year = {Mon Jul 11 00:00:00 EDT 2016},
month = {Mon Jul 11 00:00:00 EDT 2016}
}