Optimization of a gadolinium‐rich oxyhalide glass scintillator for gamma ray spectroscopy |
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Authors: | Christian Struebing Meredith Brooke Beckert Jason H. Nadler Bernd Kahn Brent Wagner Zhitao Kang |
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Affiliation: | 1. Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, Georgia;2. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia |
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Abstract: | A transparent gadolinium‐rich oxyhalide glass scintillator was developed for gamma ray spectroscopy with an energy resolution of 14.0% at 662 keV. To the best of our knowledge, this is the highest energy resolution reported for a glass‐based scintillator. The high gadolinium content facilitated a scintillator density of 4.4 g/cm3. The high fluorine and bromine incorporation is advantageous for better uniformity and a good light output of ~3200 Ph/MeV. The peak emission at 431 nm with a FWHM of 90 nm, resulting from the fast Ce3+ transitions, yielded pulse‐height spectra with distinctive peaks from 122 keV to 1.33 keV for gamma radiation from different nuclides. |
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Keywords: | gamma ray spectroscopy glass halides luminescence scintillator |
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