Calculation of responses and analysis of experimental data for a silicon gamma spectrometer

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 619; no. 1; pp. 186 - 189
• Main Authors: Klusoň, Jaroslav, Jánský, Bohumil
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-07-2010
• Subjects: Detector response; Gamma spectrometry; Monte Carlo simulation; Silicon detector for gamma; Unfolding; Unfolding; Silicon detector for gamma; Detector response; Monte Carlo simulation; Gamma spectrometry
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2009.10.180

A silicon detector developed for gamma ray spectrometry (intended for measurement in the mixed neutron gamma fields, e.g. in reactor physics) was tested for the photon energy interval up to 10
MeV. The responses of this spectrometric system were simulated using a Monte Carlo method (MCNPX code), and the response matrix was calculated. Unfolding techniques for reconstructing incident photon spectra were tested, and a method based on the Scofield–Gold iterative solution of the corresponding matrix equation was applied. The applicability of such an approach to spectrometry data processing and spectral analysis is demonstrated, an example of the results is presented, and possible future improvements and optimizations are discussed.