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Proceedings Paper

Triplet harvesting plastic scintillators with neutron-gamma pulse shape discrimination
Author(s): Edgar V. van Loef; Patrick Feng; Gary Markosyan; Urmila Shirwadkar; Patrick Doty; Kanai Shah
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Paper Abstract

In this paper we report on plastic scintillators that contain organometallic iridium compounds as triplet harvesting complexes for neutron-gamma pulse shape discrimination (PSD). Our results show that these plastic scintillators have a relatively high light output (higher than BGO) and exhibit very good neutron-gamma PSD with a Figure-of-Merit of ≥ 2.0 at 2.5 MeVee cut-off energy. Under X-ray excitation, the radioluminescence spectrum exhibits a broad band between 400 and 650 nm peaking at 470 nm which is well-matched to bialkali photomultiplier tubes and UV-enhanced photodiodes. The scintillation decay due to Ir3+ luminescence is of the order of 1 us.

Paper Details

Date Published: 5 September 2014
PDF: 9 pages
Proc. SPIE 9213, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI, 921306 (5 September 2014); doi: 10.1117/12.2061064
Show Author Affiliations
Edgar V. van Loef, Radiation Monitoring Devices, Inc. (United States)
Patrick Feng, Sandia National Labs. (United States)
Gary Markosyan, Radiation Monitoring Devices, Inc. (United States)
Urmila Shirwadkar, Radiation Monitoring Devices, Inc. (United States)
Patrick Doty, Sandia National Labs. (United States)
Kanai Shah, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 9213:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVI
Arnold Burger; Larry Franks; Ralph B. James; Michael Fiederle, Editor(s)

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