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A high rate gamma spectroscopy system for activation analysis of short lived isomeric transitions

Conference:

Abstract

A high rate spectroscopy system specially suited for measurement of short-lived isomeric transitions is described, which, as part of a fast activation analysis facility at the TRIGA Mark II reactor, provides for automatic recording and immediate evaluation of gamma spectra taken from nuclides activated at stationary or pulsed reactor power. The system consists of a commercial DC-coupled Ge(Li)-detector of 70 cm{sup 3} modified for recycling operation for input rates in excess of 500,000 c/s Co-60, a time variant trapezoidal shaping section and a fast constant dead-time ADC coupled to a programmed multi-channel analyzer. Novel circuits for efficient pile-up rejection and time variant base line restoration extend the concept of gated integration up to count rates of more than 300,000 c/s Co-60. Time-sequenced recording of spectra is performed by a mini computer operated as a front-end processor of a larger laboratory computer, where final data processing takes place. New concepts for very simple and cost-effective implementation of multi-channel analyzers by means of general purpose small computers are described. (author)
Authors:
Westphal, G P [1] 
  1. Atominstitut, Vienna (Austria)
Publication Date:
Jul 01, 1976
Product Type:
Conference
Report Number:
INIS-AT-09N0002; TOC-8
Resource Relation:
Conference: 4. European conference of TRIGA users, Vienna (Austria), 28-30 Sep 1976; Other Information: Country of input: International Atomic Energy Agency (IAEA); Abstract on p. xxxii; 2 refs, 9 figs; Related Information: In: 4. European conference of TRIGA users. Papers and abstracts, 516 pages.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ACTIVATION ANALYSIS; ANALOG-TO-DIGITAL CONVERTERS; COBALT 60; COUNTING RATES; DATA PROCESSING; DEAD TIME; GAMMA SPECTRA; GAMMA SPECTROSCOPY; ISOMERIC TRANSITIONS; LI-DRIFTED GE DETECTORS; MULTI-CHANNEL ANALYZERS; PULSED REACTORS; REACTOR OPERATION; TRIGA-2 REACTOR
OSTI ID:
21152650
Research Organizations:
General Atomic Co., San Diego, CA (United States); Atominstitut der Oesterreichischen Universitaeten, Vienna (Austria)
Country of Origin:
Austria
Language:
English
Other Identifying Numbers:
TRN: AT09N0027030704
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
page(s) 4.63-4.70
Announcement Date:
May 14, 2009

Conference:

Citation Formats

Westphal, G P. A high rate gamma spectroscopy system for activation analysis of short lived isomeric transitions. Austria: N. p., 1976. Web.
Westphal, G P. A high rate gamma spectroscopy system for activation analysis of short lived isomeric transitions. Austria.
Westphal, G P. 1976. "A high rate gamma spectroscopy system for activation analysis of short lived isomeric transitions." Austria.
@misc{etde_21152650,
title = {A high rate gamma spectroscopy system for activation analysis of short lived isomeric transitions}
author = {Westphal, G P}
abstractNote = {A high rate spectroscopy system specially suited for measurement of short-lived isomeric transitions is described, which, as part of a fast activation analysis facility at the TRIGA Mark II reactor, provides for automatic recording and immediate evaluation of gamma spectra taken from nuclides activated at stationary or pulsed reactor power. The system consists of a commercial DC-coupled Ge(Li)-detector of 70 cm{sup 3} modified for recycling operation for input rates in excess of 500,000 c/s Co-60, a time variant trapezoidal shaping section and a fast constant dead-time ADC coupled to a programmed multi-channel analyzer. Novel circuits for efficient pile-up rejection and time variant base line restoration extend the concept of gated integration up to count rates of more than 300,000 c/s Co-60. Time-sequenced recording of spectra is performed by a mini computer operated as a front-end processor of a larger laboratory computer, where final data processing takes place. New concepts for very simple and cost-effective implementation of multi-channel analyzers by means of general purpose small computers are described. (author)}
place = {Austria}
year = {1976}
month = {Jul}
}