Spectral analysis for the High Efficiency Multimode Imager

Author

Galloway, Michelle ; Zoglauer, Andreas ; Amman, Mark ; Boggs, Steven E. ; Luke, Paul N.

Author_Institution

Space Sci. Lab., Univ. of California at Berkeley, Berkeley, CA, USA

fYear

2010

fDate

Oct. 30 2010-Nov. 6 2010

Firstpage

1119

Lastpage

1123

Abstract

The High Efficiency Multimode Imager, HEMI, is a combined Compton and coded aperture imager designed to detect, localize, and characterize gamma-ray sources within the energy range from tens of keV to a few MeV. HEMI consists of cubic centimeter CdZnTe detectors with good spectral resolution (~2% at 662 keV) that allow for the separation and identification of discrete gamma-ray energies. This paper describes the methods being developed to analyze spectra and identify radioisotopes using measurements from a 24-detector system, a 42-detector planar array, and simulations from a large-scale HEMI system.

Keywords

Compton effect; gamma-ray detection; position sensitive particle detectors; semiconductor counters; spectral analysis; CdZnTe detectors; Compton image; HEMI system; coded aperture imager; discrete gamma-ray energies; gamma-ray sources; high efficiency multimode imager; spectral analysis; Deconvolution; Detectors; Energy resolution; Isotopes; Laboratories; Radioactive materials; Spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE

Conference_Location

Knoxville, TN

ISSN

1095-7863

Print_ISBN

978-1-4244-9106-3

Type

conf

DOI

10.1109/NSSMIC.2010.5873941

Filename

5873941