Nanotech 2014 Vol. 1
Nanotech 2014 Vol. 1
Nanotechnology 2014: Graphene, CNTs, Particles, Films & Composites

Polymer Nanotechnology, Soft Matter & Colloids Chapter 4

Bulk-Size Transparent Gadolinium Oxide-Polymer Nanocomposites for Gamma Ray Scintillation

Authors: Q. Chen, W. Cai, T. Hajagos, D. Kishpaugh, C. Liu, N. Cherepy, A. Dooraghi, A. Chatziioannou, S. Payne, Q. Pei

Affilation: University of California, Los Angeles, United States

Pages: 295 - 296

Keywords: scintillation, gamma detection, nanocompositre

Abstract:
Heavy element loaded polymer composites have long been proposed to detect high energy X- and -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 high loading content. The strategy to avoid luminescence quenching and opacity in the nanocomposite was successfully deployed, which led to the radioluminescence light yield up to 27,000/MeV, about twice as much as standard commercial plastic scintillators. Nanocomposites with 31 wt.% loading of nanocrystals (14 mm diameter by 3 mm thickness) generated a photoelectric peak for Cs-137 gamma (662 keV) with 11.4% energy resolution.


ISBN: 978-1-4822-5826-4
Pages: 552
Hardcopy: $209.95