Applications of Position Sensitive Detectors to Thermal Neutron Scattering PDF Download
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Author: Institut Laue-Langevin
Publisher:
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Category :
Languages : en
Pages :
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Author: Institut Laue-Langevin
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Institut Max von Laue, Paul Langevin. Grenoble
Publisher:
ISBN:
Category :
Languages : en
Pages : 150
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Author: Yacouba Diawara
Publisher: Springer Nature
ISBN: 3031365461
Category : Science
Languages : en
Pages : 257
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This book covers the most common neutron detectors used in neutron scattering facilities and all of those in use at Oak Ridge National Lab. It starts describing the facilities, instruments and the critical detector parameters needed by various instruments. Then the key components of the 3He-based linear position-sensitive detectors as well as on their electronics, which require particular attention to signal processing and noise reduction, are introduced. One chapter is dedicated to the 3He alternatives where scintillators play a critical role. It also covers emerging neutron detection technologies including semiconductors, vacuum-based devices and their associated readouts, which will be required in the future for high rate and high-resolution neutron detectors. The authors explain the logic behind the choice of materials as well as the various constraints that neutron detectors must respect to be useful. Some of these constraints, such as efficiency and gamma-ray sensitivity are common to all neutron counters while others, like timing resolution, dynamic range, and peak counting rate, depend on the applications. The book guides experts, the nuclear science community, and young scholars through the physical processes and the required electronics in a way that is accessible for those not professionally involved in designing detector’s components and electronic circuits.
Author: B. H. Meardon
Publisher:
ISBN:
Category : Neutron counters
Languages : en
Pages : 39
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Author: Pierre Convert
Publisher:
ISBN:
Category : Neutron counters
Languages : en
Pages : 460
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Author: J. M. Carpenter
Publisher: Cambridge University Press
ISBN: 0521857813
Category : Science
Languages : en
Pages : 539
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This book provides a comprehensive and up-to-date introduction to the fundamental theory and applications of slow-neutron scattering.
Author:
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Category :
Languages : en
Pages :
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Thermal neutrons (with mean energy of 25 meV) have a scattering mean free path of about 20 m in air. Therefore it is feasible to find localized thermal neutron sources up to ~30 m standoff distance using thermal neutron imaging. Coded aperture thermal neutron imaging was developed in our laboratory in the nineties, using He-3 filled wire chambers. Recently a new generation of coded-aperture neutron imagers has been developed. In the new design the ionization chamber has anode and cathode planes, where the anode is composed of an array of individual pads. The charge is collected on each of the individual 5x5 mm2 anode pads, (48x48 in total, corresponding to 24x24 cm2 sensitive area) and read out by application specific integrated circuits (ASICs). The high sensitivity of the ASICs allows unity gain operation mode. The new design has several advantages for field deployable imaging applications, compared to the previous generation of wire-grid based neutron detectors. Among these are the rugged design, lighter weight and use of non-flammable stopping gas. For standoff localization of thermalized neutron sources a low resolution (11x11 pixel) coded aperture mask has been fabricated. Using the new larger area detector and the coarse resolution mask we performed several standoff experiments using moderated californium and plutonium sources at Idaho National Laboratory. In this paper we will report on the development and performance of the new pad-based neutron camera, and present long range coded-aperture images of various thermalized neutron sources.
Author: S. A. McElhaney
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
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Category : Nuclear energy
Languages : en
Pages : 764
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Author:
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Category : Position sensitive particle detectors
Languages : en
Pages : 73
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