May 2012

Conference Paper

Instrument Development and Gamma Spectroscopy with Strontium Iodide

By:
Cherepy, Nerine; Payne, Stephen; Sturm, Benjamin; Drury, Owen; O’Neal, S; Thelin, P; Shah, Kanai; Hawrami, Rastgo; Momayezi, M; Hurst, B.; Wiggen, B.; Bhattacharya, P.; Burger, Arnold; Boatner, Lynn A; Ramey, Joanne O
Journal Name:
IEEE Transactions on Nuclear Science
Page Number:
001-958
Volume:
60
Issue Number:
2
Publication Date:
May 2012
Conference Name:
Sorma West 2012
Conference Location:
Oakland, California, United States of America
View DOI Listing:
https://doi.org/10.1109/TNS.2012.2227796

Abstract

Development of the Europium-doped Strontium Iodide scintillator, SrI2(Eu), involves advances in crystal growth, optics and readout methodology for prototype detectors. We have demonstrated energy resolution of 3% at 662 keV for a 26 cm3 SrI2(Eu) crystal, which is comparable to the performance obtained with Cerium-doped Lanthanum Bromide of equivalent size. Compared to standard analog readout, use of a digital readout method allows improved energy resolution to be obtained with large-volume SrI2(Eu) crystals. Comparative gamma spectra acquired with LaBr3(Ce) and NaI(Tl) quantitatively depict the value of the high resolution and low intrinsic radioactivity of SrI2(Eu) in discriminating closely spaced gamma lines for radioisotope identification applications.