Title :
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
fDate :
Oct. 30 2010-Nov. 6 2010
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;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE
Conference_Location :
Knoxville, TN
Print_ISBN :
978-1-4244-9106-3
DOI :
10.1109/NSSMIC.2010.5873941
