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A New Approach to Neutron Spectromet...

Khan, Nafisah.

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A New Approach to Neutron Spectrometry with Multi-Element Scintillators.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	A New Approach to Neutron Spectrometry with Multi-Element Scintillators./
Author:	Khan, Nafisah.
Description:	233 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-07(E), Section: B.
Contained By:	Dissertation Abstracts International75-07B(E).
Subject:	Engineering, Nuclear. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NS24150
ISBN:	9780499241504

A New Approach to Neutron Spectrometry with Multi-Element Scintillators.
Khan, Nafisah.

A New Approach to Neutron Spectrometry with Multi-Element Scintillators. - 233 p.

Source: Dissertation Abstracts International, Volume: 75-07(E), Section: B.

Thesis (Ph.D.)--University of Ontario Institute of Technology (Canada), 2014.

Neutron dosimetry is regarded as the last frontier in radiation protection. Due to the large span of neutron energy and the strong energy dependence of the dose to fluence coefficient, neutron dosimetry requires the knowledge of the neutron spectra for any accurate neutron dose quantification. As a result, spectrometry is a precursor to determine dosimetry quantities and spectrometers are therefore vital to determine and characterize radiation fields present to individuals as they provide information about the radiation intensity and energy spectra. In this thesis, a new approach has been adopted using different nuclear reaction processes with different contents of scintillating material. More specifically, two nuclear reactions, i.e. (n,alpha) and (n,p), on two different elements have been used to carry out neutron spectrometry.

ISBN: 9780499241504Subjects--Topical Terms:

1043651
Engineering, Nuclear.

A New Approach to Neutron Spectrometry with Multi-Element Scintillators.
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100 1 $a Khan, Nafisah. $3 2099640
245 1 2 $a A New Approach to Neutron Spectrometry with Multi-Element Scintillators.
300 $a 233 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-07(E), Section: B.
502 $a Thesis (Ph.D.)--University of Ontario Institute of Technology (Canada), 2014.
520 $a Neutron dosimetry is regarded as the last frontier in radiation protection. Due to the large span of neutron energy and the strong energy dependence of the dose to fluence coefficient, neutron dosimetry requires the knowledge of the neutron spectra for any accurate neutron dose quantification. As a result, spectrometry is a precursor to determine dosimetry quantities and spectrometers are therefore vital to determine and characterize radiation fields present to individuals as they provide information about the radiation intensity and energy spectra. In this thesis, a new approach has been adopted using different nuclear reaction processes with different contents of scintillating material. More specifically, two nuclear reactions, i.e. (n,alpha) and (n,p), on two different elements have been used to carry out neutron spectrometry.
520 $a In addition, this thesis aims to investigate the spectrometric properties of scintillating materials as a first step to establish a platform for developing a neutron spectrometer/dosimeter.
520 $a In terms of methodology, the thesis has taken an empirical approach in studying potential sensors that can be used for neutron spectrometry. Four scintillators have been explored and studied. Each scintillator corresponds to a particular energy region. The first part of the thesis consists of extensive Monte Carlo calculations to optimize the sensor's isotope contents, while the second part consists of conducting a series of experiments using three main facilities, namely an AmBe source of 120 mCi, a neutron generator of 2.5 MeV neutrons at the University of Ontario Institute of Technology, a KN Van De Graaff accelerator at McMaster University, and gamma ray sources with different energies. All sensors have been used in conjunction with a miniature data acquisition system that consists of a multi-channel analyzer, mounted on a photomultiplier, and controlled by software to operate, control and analyze the output data. The time characteristics of the output pulse, such as integration time and rising time, have been optimized for each sensor.
520 $a The thesis presents a thorough literature review, a comprehensive methodology of the study, a description of the used facilities and the results of the simulation data with four different sensors along with the experimental work carried out at the aforementioned facilities. The response iv functions of each scintillator to a given radiation type and energy has been analyzed and discussed. Furthermore, the sensor's potential for use in neutron spectrometry/dosimetry has been assessed for future work. (Abstract shortened by UMI.).
590 $a School code: 1555.
650 4 $a Engineering, Nuclear. $3 1043651
690 $a 0552
710 2 $a University of Ontario Institute of Technology (Canada). $3 1057491
773 0 $t Dissertation Abstracts International $g 75-07B(E).
790 $a 1555
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NS24150