Relevant bibliographies by topics / Fast Neutron Detectors / Dissertations / Theses
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Dissertations / Theses on the topic 'Fast Neutron Detectors'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

PADILHA, MEIRE de C. "Deteccao de neutrons utilizando CR-39." reponame:Repositório Institucional do IPEN, 1992. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10298.

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2

Chen, Gongyin 1968. "Study of high-energy gamma-ray imaging detectors for fast neutron analysis." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85318.

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3

Elbasher, Mohamed Elbasher Ahmed. "Test of fast neutron detectors for spectroscopy with (3He,n) two proton stripping reactions." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20123.

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Thesis (MSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Nine 100x100x600 mm3 plastic scintillators, formerly built for the neutron time of ight measurements at iThemba LABS, were refurbished. The position resolution of these detectors was determined using muon cosmic rays and coincident measurement techniques. Average position resolution of 4.28 cm (FWHM) was found. In order to predict the time spectrum of the large-volume detector Monte Carlo simulations have been performed. These simulations aimed at anticipating the separation of statistical neutrons, prompt gamma rays a
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4

DIAS, MAURO da S. "Desenvolvimento e aplicacao de um detector para a medida absoluta da taxa de fluencia de neutrons na regiao de MeV." reponame:Repositório Institucional do IPEN, 1988. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9898.

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5

Miller, Zachariah W. "A MEASUREMENT OF THE PROMPT FISSION NEUTRON ENERGY SPECTRUM FOR 235U(n,f) AND THE NEUTRON-INDUCED FISSION CROSS SECTION FOR 238U(n,f)." UKnowledge, 2015. http://uknowledge.uky.edu/physastron_etds/29.

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Two measurements have been made, addressing gaps in knowledge for 235U(n,f) and 238U(n,f). The energy distribution for prompt fission neutrons is not well-understood below 1 MeV in 235U(n,f). To measure the 235U(n,f) prompt fission neutron distribution, a pulsed neutron beam at the WNR facility in Los Alamos National Laboratory was directed onto a 235U target with neutron detectors placed 1 m from the target. These neutron detectors were designed specifically for this experiment and employed a unique geometry of scintillating plastic material that was designed to reject backgrounds. Fission fr
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6

Traore, Issiaka. "Etude et caractérisation des fonctions de réponse des détecteurs solides de traces nucléaires : applications à la dosimétrie radon et neutron." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-01067060.

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Cette thèse a été préparée en cotutelle entre l'Université de Strasbourg et l'Université des SciencesTechniques et Technologies de Bamako (Mali). Elle s'articule principalement autour de la caractérisation des Détecteurs Solides de Traces Nucléaires (DSTN) afin de les utiliser pour la métrologie du radon et des neutrons conformément aux nouvelles recommandations de la Commission Internationale de Protection Radiologique (CIPR-103). Les fonctions de réponse de PN3 et Neutrak, associés avec des convertisseurs adaptés, ont été étudiés en les irradiant par des neutrons du calibrateur Am-Be de l'IP
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7

Mickum, George Spencer. "Development and testing of an organic scintillator detector for fast neutron spectrometry." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47653.

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The use of organic scintillators is an established method for the measurement of neutron spectra above several hundred keV. Fast neutrons are detected largely by proton recoils in the scintillator resulting from neutron elastic scattering with hydrogen. This leads to a smeared rectangular pulse-height distribution for monoenergetic neutrons. The recoil proton distribution ranges in energy from zero to the incident neutron energy. In addition, the pulse-height distribution is further complicated by structure due to energy deposition from alpha particle recoils from interactions with carbon
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8

VILELA, EUDICE C. "Deteccao de neutrons rapidos utilizando detectores solidos de tracos nucleares." reponame:Repositório Institucional do IPEN, 1990. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10247.

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9

Bjelkenstedt, Tom. "Optimization and design of a detection system based on transmission tomography with fast neutrons." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-226394.

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This thesis is part of a project focusedon investigating the possibility ofmeasuring void distributions usingtransmission tomography with fastneutrons. The measurements are plannedto be conducted at thermal hydraulictest loops. The project, called STUNT,is carried out at Uppsala University atthe division for applied nuclearphysics.The purpose of this work was to designand optimize a detection system for thedetection of fast neutrons in the abovementioned environment. For this purpose,detector elements consisting of theplastic scintillator material EJ208 wasmodeled using the particle transportc
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10

Verma, Vasudha. "Development of a Neutron Flux Monitoring System for Sodium-cooled Fast Reactors." Doctoral thesis, Uppsala universitet, Tillämpad kärnfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-319945.

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Safety and reliability are one of the key objectives for future Generation IV nuclear energy systems. The neutron flux monitoring system forms an integral part of the safety design of a nuclear reactor and must be able to detect any irregularities during all states of reactor operation. The work in this thesis mainly concerns the detection of in-core perturbations arising from unwanted movements of control rods with in-vessel neutron detectors in a sodium-cooled fast reactor. Feasibility study of self-powered neutron detectors (SPNDs) with platinum emitters as in-core power profile monitors fo
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11

Jastaniah, Saddig Darwish. "Development of a capture-gated fast neutron detector with pulse shape discrimination using digital pulse processing." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/2792/.

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This study explores the use of digital pulse processing techniques for n/y pulse shape discrimination (PSD) in liquid scintillators, and the application of these techniques to a capture-gated fast neutron monitor developed using an enriched '°B-loaded liquid scintillator (BC523A). The motivation for this study has been to develop a computationally-fast digital PSD algorithm, which can be used to detect a weak neutron flux in the presence of a strong gamma ray background and to assess its suitability for use as a portable neutron monitor for fast neutron dosimetry. BC523A can operate as a full-
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12

Nascimento, Débora Siqueira. "Detecção de nêutrons rápidos devido a radiação espalhada em aceleradores lineares." Pós-Graduação em Física, 2018. http://ri.ufs.br/jspui/handle/riufs/8963.

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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Linear accelerators of high energy beams have been used to treat tumors in radiotherapy. Some questions about the protection of the patient and occupationally exposed workers have been arisen because high energy bundles generate scattered radiations that are undesirable in treatment. A possible radiation type generated due to the interaction of the beam with accelerator elements is the neutron, mainly fast neutrons. Such radiation can cause serious problems for patients besides cause damage to devices used by th
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13

MATEUS, CRISLENE. "Radônio como indicador de contaminação ambiental por hidrocarbonetos em fase livre." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26610.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-08-26T11:02:10Z No. of bitstreams: 0<br>Made available in DSpace on 2016-08-26T11:02:10Z (GMT). No. of bitstreams: 0<br>As áreas contaminadas por NAPL (Non-Aqueous Phase-Liquids ou fase líquida não aquosa ou ainda fase livre) podem causar riscos à saúde humana e aos ecossistemas, restrições para o desenvolvimento urbano e diminuição do valor imobiliário das propriedades. Este trabalho utilizou o gás radônio como um indicador para a análise de gás subsuperficial do solo, uma vez que este gás nobre apresenta boa solubilidad
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14

Sadaka, Samir. "Etude theorique et experimentale d'un dosimetre de neutrons rapides." Toulouse 3, 1986. http://www.theses.fr/1986TOU30032.

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Etude theorique de la reponse d'un dosimetre neutronique compose d'un convertisseur fortement hydrogene le(ch::(2))n et d'un detenteur solide visuel de trace le cr39. Etude de la reponse theorique en fonction de l'energie et de l'incidence du flux neutronique. Comparaison avec les resultats experimentaux
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15

Chen, Mark C. "Experiments in Neutrino Mass and Mixing: Part I - New Limits on Heavy Neutrino Emission in Nuclear Beta Decay. Part II - Fast Neutron Backgrounds for the San Onofre Neutrino Detector." Thesis, 1994. https://thesis.library.caltech.edu/7642/1/Chen-Mark%2C%20C%20Thesis.pdf.

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<p>In Part I of this thesis, a new magnetic spectrometer experiment which measured the β spectrum of ^(35)S is described. New limits on heavy neutrino emission in nuclear β decay were set, for a heavy neutrino mass range between 12 and 22 keV. In particular, this measurement rejects the hypothesis that a 17 keV neutrino is emitted, with sin^2 θ = 0.0085, at the 6δ statistical level. In addition, an auxiliary experiment was performed, in which an artificial kink was induced in the β spectrum by means of an absorber foil which masked a fraction of the source area. In this measurement, the
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16

Mayer, John Karl. "Photomultiplier tube dark current enhancement in mixed radiation fields and possible application to the development of a fast neutron detector." 1988. http://hdl.handle.net/1993/16718.

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17

Gutierrez, Andrea. "Étude de la réponse du détecteur ATLAS-MPX aux neutrons rapides." Thèse, 2009. http://hdl.handle.net/1866/3785.

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Les détecteurs ATLAS-MPX sont des détecteurs Medipix2-USB recouverts de convertisseurs de fluorure de lithium et de polyéthylène pour augmenter l’efficacité de détection des neutrons lents et des neutrons rapides respectivement. Un réseau de quinze détecteurs ATLAS-MPX a été mis en opération dans le détecteur ATLAS au LHC du CERN. Deux détecteurs ATLAS-MPX de référence ont été exposés à des sources de neutrons rapides 252 Cf et 241 AmBe ainsi qu’aux neutrons rapides produits par la réaction 7Li(p, xn) pour l’étude de la réponse du détecteur à ces neutrons. Les neutrons rapides sont principaleme
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