ANSTO Publications Online

Welcome to the ANSTO Institutional Repository known as APO.

The APO database has been migrated to version 7.5. The functionality has changed, but the content remains the same.

ANSTO Publications Online is a digital repository for publications authored by ANSTO staff since 2007. The Repository also contains ANSTO Publications, such as Reports and Promotional Material. ANSTO publications prior to 2007 continue to be added progressively as they are in identified in the library. ANSTO authors can be identified under a single point of entry within the database. The citation is as it appears on the item, even with incorrect spelling, which is marked by (sic) or with additional notes in the description field.

If items are only held in hardcopy in the ANSTO Library collection notes are being added to the item to identify the Dewey Call number: as DDC followed by the number.

APO will be integrated with the Research Information System which is currently being implemented at ANSTO. The flow on effect will be permission to publish, which should allow pre-prints and post prints to be added where content is locked behind a paywall. To determine which version can be added to APO authors should check Sherpa Romeo. ANSTO research is increasingly being published in open access due mainly to the Council of Australian University Librarians read and publish agreements, and some direct publisher agreements with our organisation. In addition, open access items are also facilitated through collaboration and open access agreements with overseas authors such as Plan S.

ANSTO authors are encouraged to use a CC-BY licence when publishing open access. Statistics have been returned to the database and are now visible to users to show item usage and where this usage is coming from.

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Now showing 1 - 5 of 5

Recent Submissions

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A neutron diffraction investigation of residual stresses in rail ends after severe deformation of rail surfaces
(Australian Nuclear Science and Technology Organisation, 2013-09-10) Rathod, C; Luzin, V; Wexler, D
Insulated rail ioints (lRJs) are an integral part of the rail track signalling system lRJs in heavy haul corridors around the iivorld are periodically serviced or replaced due to accumulated damage at the joint, rails are supported by tvvo fishplates which are fastened by bolts and nuts and, with the support of sleepers and track ballast form an integrated assembly. lRJ failure due to track fracture can result from progressive defects, the propagation of vvhich is influenced by residual stresses in the rail, which occur in the as-supplied track and then change significantly changes due to wheel rolling contact stress. lRJ failures can also occur well before the initiation of cracks or surface voids, when metal flow over the insulated rail gap (typically 6-8 mm Width) breaks the electrically isolated section of track and results in malfunction ofthe track signalling system. ln this investigation, residual stress measurements vi/ere obtained from two rail-ends which had undergone controlled amounts of surface plastic deformation using a full scale wheel-on-track simulation test rig. Results were compared vvith those obtained from similar investigations performed on rail ends associated vvith ex-service lRJs. Residual stresses vvere measured by neutron diffraction at the Australian Nuclear Science and technology Organisation (ANSTO). Measurements with constant gauge volume 3x3x3 mm3 vvere carried in the central vertical plane on 5mm thick sliced rail samples cut by Electric Discharge machine (EDM). Stress evolution at the rail ends was found to exhibit characteristics similar to those of the ex-service rails, with a compressive zone of 5mm deep that is counterbalanced by a tension zone beneath, extending to a depth of around 15mm. However, in contrast to the ex-service rails, the type of stress distribution in the test-rig deformed samples was apparently different due to the localization of load under the particular test conditions. ln the latter, there vvas no obvious evolution of d0 due to less accumulation of service load.
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Alligator Rivers analogue project final report volume 8 chemistry and mineralogy of rocks and soils
(Australian Nuclear Science and Technology Organisation, 1992) Edis, R; Cao, L; Cashion, JD; Klessa, D; Koppi, AJ; Murakami, T; Nightingale, T; Payne, TE; Snelling, A; Yanase, N
This volume contains a description of the distribution of minerals and elements at Koongarra, including the distribution of radionuclides. The Koongarra orebody is situated 225 km east of Darwin in the Northern Territory of Australia. The zone of primary uranium mineralisation has been intersected by weathering conditions, and this has resulted in the formation of a secondary ore zone and dispersion fan in the weathered zone. The uranium distribution over the site was investigated to determine the extent and direction of uranium migration from the primary uranium mineralisation. The depth patterns of uranium concentration were also investigated to elucidate depths. The distribution of elements, rock and minerals, and how they may affect uranium mobility, or indicate interactions between uranium and solid phases, were considered. Multi-elemental analyses were carried out on many samples to provide basic concentration data about various geochemically significant elements, and to elucidate how the elements interact with one another, the solid substrate and the groundwater. This included the analysis of bulk rock samples, visually distinct sub-samples, different particle sizes and chemically defined phases. Similarly, mineralogical data supplied information on the substrate reacting with the groundwater. Extensive studies were undertaken to elucidate the form of uranium in the weathered zones. These involved optical and electron microscopy studies and auto-radiography. Spatial trends of uranium series disequilibria in bulk rock, secondary uranium minerals and different chemically defined phases were analysed. These give information about uranium deposition and leaching, the evolution of the dispersion fan, the roles and relative importance of different mineralogical phases and processes involved in the retardation of radionuclides.
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Alligator Rivers analogue project final report volume 9 weathering and its effects on uranium redistribution
(Australian Nuclear Science and Technology Organisation, 1992) Murakami, T; Isobe, H; Ohnuki, T; Yanase, N; Sato, T; Kimura, H; Sekine, K; Edis, R; Koppi, AJ; Klessa, DA; Connoley, C; Nagano, T; Nakashima, S; Ering, RC
In the vicinity of the uranium ore deposit at Koongarra, quartz-chlorite schist, the ore host rock, has been subjected to weathering. Although quartz is resistant to weathering, chlorite has been altered to clays and iron minerals. The chlorite weathering and the uranium association with the weathered minerals are the main topics of this study. In order to clarify the weathering of chlorite and its effects on the redistribution of uranium, the processes, mechanisms, and kinetics of the chlorite weathering, and the uranium concentrations in minerals were examined by various methods: X-ray diffraction analysis, scanning electron microscopy, electron microprobe analysis, transmission electron microscopy, autoradiography, visible spectroscopy, alpha and gamma spectrometry. The observed results were compared to those calculated, based on two different models developed for the present study. Water-rock interactions have resulted in the weathering of chlorite and precipitation and sorption of uranyl from the groundwaters with the weathering products. It is concluded that the chlorite weathering affects the uranium retardation factor, and thus uranium redistribution at Koongarra.
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Development of a gamma radiation attenuation technique to measure voidage in packed beds
(Australian Atomic Energy Commission, 1967-02-16) Saiva, G
Not available
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How 50 years with HIFAR shaped the Australian Centre for Neutron Scattering
(Australian Nuclear Science and Technology Organisation, 2017-11-28) Elcombe, MM
This talk will be based on my experience with Triple Axis Spectrometers over 50 years. The good and not so good features have had a profound influence on the changes made to the early instruments and the design of new instruments which have occurred over the years. In the early days Australians were very good at adapting existing equipment, writing ingenious computer algorithms and initiating the development of new materials. Later we took on designs, materials and new technologies from overseas and incorporated into them more rigorous radiation and safety standards to avoid many of the early pitfalls. What we learnt from this upgrade affected how and what we took forward into the design of both the reactor and the suite of neutron beam instruments which is the Australian Centre of Neutron Scattering today.