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Cai W, Chen Q, Cherepy N, et al. Synthesis of bulk-size transparent gadolinium oxide-polymer nanocomposites for gamma ray spectroscopy. J Mater Chem C Mater. 2013;1(10):1970-1976doi: 10.1039/c2tc00245k.
Cai, W., Chen, Q., Cherepy, N., Dooraghi, A., Kishpaugh, D., Chatziioannou, A., Payne, S., Xiang, W., & Pei, Q. (2013). Synthesis of bulk-size transparent gadolinium oxide-polymer nanocomposites for gamma ray spectroscopy. Journal of materials chemistry. C, 1(10), 1970-1976. https://doi.org/10.1039/c2tc00245k
Cai, Wen, et al. "Synthesis of bulk-size transparent gadolinium oxide-polymer nanocomposites for gamma ray spectroscopy." Journal of materials chemistry. C vol. 1,10 (2013): 1970-1976. doi: https://doi.org/10.1039/c2tc00245k
Cai W, Chen Q, Cherepy N, Dooraghi A, Kishpaugh D, Chatziioannou A, Payne S, Xiang W, Pei Q. Synthesis of bulk-size transparent gadolinium oxide-polymer nanocomposites for gamma ray spectroscopy. J Mater Chem C Mater. 2013 Mar 14;1(10):1970-1976. doi: 10.1039/c2tc00245k. Epub 2013 Jan 07. PMID: 26478816; PMCID: PMC4608459.
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J Mater Chem C Mater. 2013 Mar 14;1(10):1970-1976. doi: 10.1039/c2tc00245k. Epub 2013 Jan 07.

Synthesis of bulk-size transparent gadolinium oxide-polymer nanocomposites for gamma ray spectroscopy.

Journal of materials chemistry. C

Wen Cai, Qi Chen, Nerine Cherepy, Alex Dooraghi, David Kishpaugh, Arion Chatziioannou, Stephen Payne, Weidong Xiang, Qibing Pei

Affiliations

  1. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095-1595, USA. Tel: +1 310 825 4127 ; School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
  2. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095-1595, USA. Tel: +1 310 825 4127.
  3. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
  4. Department of Molecular & Medical Pharmacology, University of California, Los Angeles, CA 90095-1595, USA.
  5. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.

PMID: 26478816 PMCID: PMC4608459 DOI: 10.1039/c2tc00245k

Abstract

Heavy element loaded polymer composites have long been proposed to detect high energy X- and γ-rays upon scintillation. The previously reported bulk composite scintillators have achieved limited success because of the diminished light output resulting from fluorescence quenching and opacity. We demonstrate the synthesis of a transparent nanocomposite comprising gadolinium oxide nanocrystals uniformly dispersed in bulk-size samples at a high loading content. The strategy to avoid luminescence quenching and opacity in the nanocomposite was successfully deployed, which led to the radioluminescence light yield of up to 27 000/MeV, about twice as much as standard commercial plastic scintillators. Nanocomposites monoliths (14 mm diameter by 3 mm thickness) with 31 wt% loading of nanocrystals generated a photoelectric peak for Cs-137 gamma (662 keV) with 11.4% energy resolution.

References

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