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Arkani, Mohammad; Raisali, Gholamreza, E-mail: markani@aeoi.org.ir, E-mail: graisali@aeoi.org.ir2015
AbstractAbstract
[en] Non-random event losses due to dead time effect in nuclear radiation detection systems distort the original Poisson process into a new type of distribution. As the characteristics of the distribution depend on physical properties of the detection system, it is possible to estimate the dead time parameters based on time interval analysis, this is the problem investigated in this work. A BF3 ionization chamber is taken as a case study to check the validity of the method in experiment. The results are compared with the data estimated by power rising experiment performed in Esfahan Heavy Water Zero Power Reactor (EHWZPR). Using Monte Carlo simulation, the problem is elaborately studied and useful range for counting rates of the detector is determined. The proposed method is accurate and applicable for all kinds of radiation detectors with no potential difficulty and no need for any especial nuclear facility. This is not a time consuming method and advanced capability of online examination during normal operation of the detection system is possible
Primary Subject
Source
S0168-9002(14)01357-6; Available from http://dx.doi.org/10.1016/j.nima.2014.11.069; Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; ISSN 0168-9002;
; CODEN NIMAER; v. 774; p. 151-158

Country of publication
BORON COMPOUNDS, BORON HALIDES, CALCULATION METHODS, DECAY, DETECTION, DIFFERENTIAL EQUATIONS, ELECTRONIC EQUIPMENT, EQUATIONS, EQUIPMENT, EVALUATION, EXPERIMENTAL REACTORS, FLUORIDES, FLUORINE COMPOUNDS, FUNCTIONS, HALIDES, HALOGEN COMPOUNDS, HEAVY WATER MODERATED REACTORS, IONIZATION CHAMBERS, MEASURING INSTRUMENTS, NATURAL URANIUM REACTORS, NEUTRON DETECTORS, PARTIAL DIFFERENTIAL EQUATIONS, RADIATION DETECTORS, REACTORS, RESEARCH AND TEST REACTORS, SIMULATION, THERMAL REACTORS, TIMING PROPERTIES, ZERO POWER REACTORS
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