Share Email Print
cover

Proceedings Paper • new

Nanocomposites for low dose gamma-ray sensor: Effect of matrix and oxidizer on the performance (Conference Presentation)
Author(s): Vishall Dayal; Narsingh Bahadur Singh; Ching Hua Su; Puneet Gill; Brit Lee; Fow-Sen Choa; Bradley Arnold; Lisa Kelly; Brian Cullum
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Synthesis and crystal growth of scintillators and semiconductor materials for radiation detectors have been proven to be time consuming and very costly. Several alternative crystals such as Tl3ASSe3, TlGaSe2, Tl4HgI6, PbSe(1-x)Ix have developed in our laboratory. These heavy metal and high Z based compounds have shown great promise. We have been working on some innovative approaches based on Cerenkov radiation and nanocomposites of ionizing organics for faster and efficient sensors. By combining some metallic oxides with an organic material, it should be possible to both extend the energy range of particles capable of being detected while also providing more discrimination for high energy gamma-rays, based on local secondary effects in the surrounding organic matrix. We have been working with a highly ionizing organic compound p-chloranil (2,3,5,6-Tetrachloro-1,4-benzoquinone) matrix. In addition, we have determined effect of oxidizing compounds MnO2 on urea-based composites. We use metal oxide as active ingredient in this matrix. We will present effect of morphology and processing on the performance of nanocomposite for sensing gamma-rays.

Paper Details

Date Published: 14 May 2019
PDF
Proc. SPIE 11010, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XX, 110100Q (14 May 2019); doi: 10.1117/12.2517435
Show Author Affiliations
Vishall Dayal, Univ. of Maryland, Baltimore County (United States)
Narsingh Bahadur Singh, Univ. of Maryland, Baltimore County (United States)
Ching Hua Su, NASA Marshall Space Flight Ctr. (United States)
Puneet Gill, Univ. of Maryland, Baltimore County (United States)
Brit Lee, Univ. of Maryland, Baltimore County (United States)
Fow-Sen Choa, Univ. of Maryland, Baltimore County (United States)
Bradley Arnold, Univ. of Maryland, Baltimore County (United States)
Lisa Kelly, Univ. of Maryland, Baltimore County (United States)
Brian Cullum, Univ. of Maryland, Baltimore County (United States)


Published in SPIE Proceedings Vol. 11010:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XX
Jason A. Guicheteau; Chris R. Howle, Editor(s)

© SPIE. Terms of Use
Back to Top