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Relevant bibliographies by topics / Neutron generators

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Dissertations / Theses

Academic literature on the topic 'Neutron generators'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Dissertations / Theses on the topic "Neutron generators"

1

Majawa, Louis John. "Neutron activation analysis of plantinum converter and furnace mattes using a D-T sealed tube neutron generator." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/6650.

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Neutron activation analysis (NAA) has been applied to furnace matte and converter matte samples with the objective of studying the natural variation in the elemental composition of the samples, with a view to characterize the samples for their source of origin. The experimental work was carried out at iThemba LABS national laboratory near Cape Town, South Africa. A new NAA facility was designed and built for this purpose, and fully characterized, featuring a 14 MeV neutron generator. Gamma-ray spectra were measured using an HPGe detector. A number of isotopes were identified in the measured sp

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2

Andersson, Peter. "Fast-Neutron Tomography using a Mobile Neutron Generator for Assessment of Steam-Water Distributions in Two-Phase Flows." Doctoral thesis, Uppsala universitet, Tillämpad kärnfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-222459.

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This thesis describes the measurement technique of fast-neutron tomography for assessing spatial distributions of steam and water in two-phase flows. This so-called void distribution is of importance both for safe operation and for efficient use of the fuel in light water reactors, which compose the majority of the world’s commercial nuclear reactors. The technique is aimed for usage at thermal-hydraulic test loops, where heated two-phase flows are being investigated under reactor-relevant conditions. By deploying portable neutron generators in transmission tomography, the technique becomes ap

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3

McKee, Erik Scott. "Neutron Production from Z-pinch Plasmas at the 1 MA Zebra Generator." Thesis, University of Nevada, Reno, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10247687.

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<p> Neutrons produced deuterium Z-pinch plasmas are widely acknowledged to be a consequence of highly accelerated deuterons undergoing nuclear fusion with relatively stationary deuterons. The acceleration is thought to occur in intense fields created in the MHD instabilities that punctuate the plasma column. Interestingly, the energies of the accelerated ions exceed the applied voltage across the electrode gap. We use the 1 MA Zebra pulsed-power generator at the Nevada Terawatt Facility (NTF) to explore this poorly understood fast neutron production mechanism by creating deuterium Z-pinches in

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4

Motloung, Setumo Victor. "Intense pulsed neutron generation based on the principle of Plasma Immersion Ion Implantation (PI3) technique." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9599_1182748458.

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<p>The development of a deuterium-deuterium/ tritium-deuterium (D-D/ D-T) pulsed neutron generator based on the principle of the Plasma Immersion Ion Implantation (PI3) technique is presented, in terms of investigating development of a compact system to generate an ultra short burst of mono-energetic neutrons (of order 1010 per second) during a short period of time (&lt<br>20&mu<br>s) at repetition rates up to 1 kHz. The system will facilitate neutron detection techniques, such as neutron back-scattering, neutron radiography and time-of-flight activation analysis.</p> <p><br /> Aspects address

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5

Wickman, Erik. "Simulation of neutron generator assisted gamma emission tomography for inspection of fissile content in spent nuclear fuel." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-335161.

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This is a feasibility study of a new measurement technique for spent nuclear fuel. The technique combines gamma emission tomography with neutron activation analysis. The idea is to measure high-energy characteristic gamma from short-lived fission products and thereby verify the fissile material content in spent nuclear fuel assemblies. Simulations using MCNP were done to estimate the expected detector count rate for these characteristic gammas. The predicted count rate was too slow for the proposed technique to be of practical use. However, several improvements that could increase the count ra

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6

Negoita, Cezar Ciprian. "Measurement of neutron flux spectra in a Tungsten Benchmark by neutron foil activation method." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1096547324156-18744.

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The nuclear design of fusion devices such as ITER (International Thermonuclear Experimental Reactor), which is an experimental fusion reactor based on the &quot;tokamak&quot; concept, rely on the results of neutron physical calculations. These depend on the knowledge of the neutron and photon flux spectra which is particularly important because it permits to anticipate the possible answers of the whole structure to phenomena such as nuclear heating, tritium breeding, atomic displacements, radiation shielding, power generation and material activation. The flux spectra can be calculated

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7

Fernandes, Ronald, Michael Graul, Burak Meric, and Charles H. Jones. "ONTOLOGY-DRIVEN TRANSLATOR GENERATOR FOR DATA DISPLAY CONFIGURATIONS." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605328.

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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California<br>This paper presents a new approach for the effective generation of translator scripts that can be used to automate the translation of data display configurations from one vendor format to another. Our approach uses the IDEF5 ontology description method to capture the ontology of each vendor format and provides simple rules for performing mappings. In addition, the method includes the specification of mappings between a language-specific ontology and its corresponding sy

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8

Hu, Xiao Ming. "Development of a System for Testing Grid-connected Doubly Fed Induction Generators with Implementation of a Three-level Neutral-Point-clamped Converter." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29443.

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Consistent international efforts have been made over the past few decades to move the world towards an environmentally sustainable society. Wind energy conversion systems (WECSs) are one of the largest contributors within this movement. Furthermore amongst existing wind turbine power generation technologies, the doubly fed induction generator (DFIG) has been distinctively popular for its lower capital costs especially in higher power applications. In order to study the integration of this type of generator into the grid, a laboratory based DFIG test rig was developed where its complete design

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9

Toschi, Francesco. "Study of the electronic recoil background of the XENON1T experiment." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15785/.

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Uno dei principali protagonisti della caccia alla Materia Oscura è il Progetto XENON presso i LNGS, con l'obiettivo di rivelare le WIMP. Forti dell'esperienza proveniente dalle precedenti fasi del Progetto, l'attuale esperimento XENON1T è il primo che contiene circa 3.2 t di xenon liquido, di cui circa 2 t costituiscono la massa attiva della TPC a doppia fase. E questa è la prima TPC con massa attiva superiore a 1 t e con il più basso livello di fondo tra tutti gli esperimenti di questo tipo. Nel 2017, con un tempo di esposizione di soli 34.2 giorni, XENON1T ha ottenuto uno dei miglior limit

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10

Moriot, Jérémy. "Détection vibro-acoustique passive d’une réaction sodium-eau par formation de voies dans un générateur de vapeur d’un réacteur nucléaire à neutrons rapides refroidi au sodium." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0151/document.

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La thèse s’inscrit dans le cadre industriel de la détection de la réaction entre l’eau et le sodium dans un générateur de vapeur d’un réacteur à neutrons rapides à caloporteur sodium. Plus précisément, il s’agit de détecter une micro-fuite d’eau dans le sodium (débit < 1 g/s) en moins de 10 secondes à partir des signaux vibratoires mesurés sur la virole externe du générateur de vapeur. Le bruit de fond très important de l’installation en fonctionnement risque de mettre en défaut la détection basée sur un dépassement de seuil de l’énergie vibratoire. Nous nous intéressons dans cette thèse à

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