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Gamma detection: an unusual application for surface barrier detectors

Journal Article:

Abstract

The silicon surface barrier detectors (SBD), may be ideal devices to be used in dose indicators for the monitoring of gamma radiations; the SBD working as a cavity sensor. The measurement consists in counting the number of pulses that exceeds a certain level of discrimination, this number being proportional to the absorbed dose. The spectral distribution of the pulses gives an idea of the existing photon field's energy. Characteristic spectra obtained with different gamma and X-ray sources are described and analyzed, and tests are carried out by using different sensitive volumes of the detector in order to determine significant parameters for a gamma-monitor system. The results from the measurements indicate: a) high sensitivity of the system with SBD (high density of material); b) low background: enviromental backgrounds are reliably registered (approx. 10 R/h); c) minimum detectable energies of the order of 60 keV; d) possibility to determine high exposure rates (approx. 100 R/h); e) for emitters of low Z, the result is approximately independent from the gamma energy. These results suggest the possibility of constructing fixed and portable systems, appropriate for gamma monitoring, which utilize SBD as sensors; these devices are adequate for working at enviroment temperatures, being compact, reliable,  More>>
Publication Date:
Feb 01, 1983
Product Type:
Journal Article
Reference Number:
AIX-17-007196; EDB-86-043621
Resource Relation:
Journal Name: Energ. Nucl. (Buenos Aires); (Argentina); Journal Volume: 11
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 61 RADIATION PROTECTION AND DOSIMETRY; GAMMA DETECTION; SI SEMICONDUCTOR DETECTORS; SURFACE BARRIER DETECTORS; RADIATION MONITORING; DOSIMETRY; EXPERIMENTAL DATA; PORTABLE EQUIPMENT; SILICON; SPECTRA; DATA; DETECTION; ELEMENTS; EQUIPMENT; INFORMATION; MEASURING INSTRUMENTS; MONITORING; NUMERICAL DATA; RADIATION DETECTION; RADIATION DETECTORS; SEMICONDUCTOR DETECTORS; SEMIMETALS; 440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments; 655000 - Medical Physics
OSTI ID:
6049556
Research Organizations:
Comision Nacional de Energia Atomica, Buenos Aires, Argentina. Dept. de Instrumentacion y Control
Country of Origin:
Argentina
Language:
Spanish
Other Identifying Numbers:
Journal ID: CODEN: ENNUD
Submitting Site:
HEDB
Size:
Pages: 51-58
Announcement Date:

Journal Article:

Citation Formats

Fichtenbaum de Iacub, S, and Matatagui, E. Gamma detection: an unusual application for surface barrier detectors. Argentina: N. p., 1983. Web.
Fichtenbaum de Iacub, S, & Matatagui, E. Gamma detection: an unusual application for surface barrier detectors. Argentina.
Fichtenbaum de Iacub, S, and Matatagui, E. 1983. "Gamma detection: an unusual application for surface barrier detectors." Argentina.
@misc{etde_6049556,
title = {Gamma detection: an unusual application for surface barrier detectors}
author = {Fichtenbaum de Iacub, S, and Matatagui, E}
abstractNote = {The silicon surface barrier detectors (SBD), may be ideal devices to be used in dose indicators for the monitoring of gamma radiations; the SBD working as a cavity sensor. The measurement consists in counting the number of pulses that exceeds a certain level of discrimination, this number being proportional to the absorbed dose. The spectral distribution of the pulses gives an idea of the existing photon field's energy. Characteristic spectra obtained with different gamma and X-ray sources are described and analyzed, and tests are carried out by using different sensitive volumes of the detector in order to determine significant parameters for a gamma-monitor system. The results from the measurements indicate: a) high sensitivity of the system with SBD (high density of material); b) low background: enviromental backgrounds are reliably registered (approx. 10 R/h); c) minimum detectable energies of the order of 60 keV; d) possibility to determine high exposure rates (approx. 100 R/h); e) for emitters of low Z, the result is approximately independent from the gamma energy. These results suggest the possibility of constructing fixed and portable systems, appropriate for gamma monitoring, which utilize SBD as sensors; these devices are adequate for working at enviroment temperatures, being compact, reliable, with low polarization voltages, and of relatively low cost.}
journal = {Energ. Nucl. (Buenos Aires); (Argentina)}
volume = {11}
journal type = {AC}
place = {Argentina}
year = {1983}
month = {Feb}
}