Zobrazeno 1 - 10
of 98
pro vyhledávání: '"J.I.W. Watterson"'
Autor:
Adrian Martindale, D. Vernon, A. F. Abbey, R. A. Street, J.I.W. Watterson, Richard M. Ambrosi, G.W. Fraser, D. Ross, Bruce Feller, J. Dowson, Richard C. Lanza
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 572:844-852
High-performance large area imaging detectors for fast neutrons in the 5–14 MeV energy range do not exist at present. The aim of this project is to combine microchannel plates or MCPs (or similar electron multiplication structures) traditionally us
Autor:
Bruce Feller, Richard M. Ambrosi, J.I.W. Watterson, R. A. Street, A. F. Abbey, Paul L. White, T. Stevenson, J. Dowson, Richard C. Lanza, G.W. Fraser, Greg Downing
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 542:271-278
High-performance large-area imaging detectors for fast neutrons in the 5–14 MeV energy range do not exist at present. The aim of this project is to combine microchannel plates or MCPs (or similar electron multiplication structures) traditionally us
Autor:
N. P. Bannister, G.W. Fraser, Ian Hutchinson, J.I.W. Watterson, M. Makarewicz, A. Mills, T. Stevenson, Richard M. Ambrosi, Richard C. Lanza, L. Richter, D. L. Talboys, Mark R. Sims
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 539:198-216
Geological processes on Earth can be related to those that may have occurred in past epochs on Mars, if analytical methods used on Earth can be operated remotely on the surface of the Red Planet. Nuclear analytical techniques commonly used in terrest
Autor:
Richard M. Ambrosi, J.I.W. Watterson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 524:340-354
In fast neutron radiography, the neutron energy spectrum, the imaging geometry, neutron scattering and the position-sensitive detector influence the feature contrast, resolution and the signal-to-noise ratio in the image. The effect of the imaging ge
Autor:
J.I.W. Watterson, Richard M. Ambrosi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 513:367-373
Resonance imaging with mono-energetic (or quasi-mono-energetic) fast neutrons is able to map features in bulk samples in a way that is sensitive to their elemental composition. It has a number of potential applications, for example, in mining and in
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 477:378-382
In fast neutron radiography, imaging geometry, neutron scattering, the fast neutron scintillator and the position-sensitive detector all influence feature contrast, resolution and the signal-to-noise ratio in the image. The effect of imaging geometry
Autor:
C.B Franklyn, W. R. McMurray, J.I.W. Watterson, K Richardson, A Waites, J Guzek, U.A.S Tapper
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 152:515-526
Two different technical solutions to the problem of generation of mono-energetic fast neutron beams on the gaseous targets are presented here. A simple and cost-effective design of a cooled windowed gas target system is described in the first part of
Autor:
T.K Magagula, J.I.W. Watterson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 139:293-297
The 7Li(p, n)7Be reaction has proved to be useful in selective neutron activation analysis via the production of nuclear isomers. This is due to the relatively high yield and narrow energy spread of the neutrons that can be produced with a thin lithi
Autor:
J.I.W. Watterson, H. Rahmanian
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 139:466-470
Fast neutron radiography (FNA) is a promising new application for small accelerators. The potential effectiveness of this technique depends on the development of suitable imaging detectors for fast neutrons. Zinc sulphide based scintillators have the
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 139:286-292
Monte Carlo random sampling methods offer a powerful tool for the investigation of how neutron scattering can affect image formation in a fast neutron radiography facility. A laboratory developed for accelerator based fast neutron radiography contain