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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Applications of accelerator mass spectrometry in nuclear verification
(Institute of Nuclear Materials Management, 2012-07-01) Hotchkis, MAC; Child, DP; Wilcken, K
The reduction and eventual elimination of nuclear threats to global peace and security remains a high priority for governments around the world. The approach towards this goal involves multiple paths, including through existing treaties, such as the Non-proliferation Treaty (NPT), through bringing into force treaties and agreements such as the Additional Protocol and the Comprehensive Test Ban Treaty, and through the negotiation and enactment of new arms reduction measures and treaties such as the Fissile Material Cut-off Treaty. The long-lived actinides radioisotopes of interest are usually the most abundant species of that mass and radiochemical separation is sufficient to remove atomic isobars if they are present. The key advantage of accelerator mass spectrometry (AMS), compared to other forms of mass spectrometry, is its exceptional abundance sensitivity.
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Characterization of thermally stable diamond composite material
(2013-09) Boland, JN; Luzin, V; Lin, XS
Diamond composite materials are being used increasingly in cutting tools for both the mining and manufacturing industries. Except for the low pressure CVD and SPS methods, most SiC based diamond composites are produced under high pressure and high temperature (HPHT). The dominant binder phase is SiC and these composites are classed as thermally stable and are referred to as TSDC (thermally stable diamond composite). TSDC composites are produced by reactive sintering either within the diamond stability field, ~1500°C and ~5.5 GPa, or in the graphite phase field at ~1550°C and ~2 - 3.5 GPa as originally patented by Ringwood. Unlike the traditional polycrystalline diamond composite (PCD) that use Co as the binder phase and operate under restricted temperature conditions, usually less the 800°C, TSDC is Co-free allowing the operational temperature range for TSDC to be extended substantially. Extensive experimental research has been conducted at the CSIRO (Commonwealth Scientific & Industrial Research Organization) Rock Cutting Laboratory to assess the quality of TSDC products through a series of in-house tests that have been developed (abrasive wear test, compressive and shear testing) to facilitate their use in the mining industry. The focus is to prevent TSDC from premature failures in drilling and cutting operations. Since the wear resistance and performance in general, of TSDC cutting elements are strongly dependent on the phase composition, phase distribution (microstructures) and phase interaction (microstresses), detailed studies of TSDC have been undertaken using optical, SEM (with EDS and CL), Raman microscopy and radiographic imaging of macro defects as well as x-ray and neutron diffraction. Residual stress measurements were made using the neutron diffractometer Kowari at OPAL research reactor in the diamond and SiC phases in two TSDC samples. The microstresses that developed in these phases as a result of quenching from high sintering pressure and temperature and the mismatch of the thermo-mechanical properties of SiC matrix and diamond inclusions were evaluated. The matrix-inclusion concept has also been used to calculate stress partition in the phases of the TSDC products that can be directly comparable with the experimental data and give clearer interpretation of the experimental results
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Investigations of stress corrosion cracking in a gas pipeline
(Australian Nuclear Science and Technology Organisation, 2013-09-10) Law, M; Linton, V; Luzin, V
Stress Corrosion Cracking (SCC) may be a serious problem in gas pipelines. This work studies the hardness and residual stress profiles in two nominally identical sections of adjacent pipe with similar environment and coating, one of which was affected by detectable SCC and the other that was not. The results show changes in texture, residual stress, plastic strain, and hardness at the pipe surface which may be responsible for the altered susceptibility to SCC.
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Mass balance assessment of initial weathering processes derived from oxygen cionsumption rares in waste sulfide ore
(United States Department of The Interior Bureau of Mines, 1994-04-24) Strömberg, B; Banwart, SA; Bennett, JW; Ritchie, AIM
A stoichiometric model for initial weathering processes in fresh waste rock has been developed for Aitik ore. Based on element mass balances, solubility equilibrium, mineralogy of unreacted waste rock, and literature data, we identified the dominant geochemical processes and determined geochemical reaction rates for weathering of pyrite, chalcopyrite, calcite, plagioclase and biotite using fluxes derived from large experimental columns filled with waste rock. The oxidation rate of reduced Fe and S was based on Oz-consumption rates that were previously determined in the columns. In the fresh waste rock, acidity production from pyrite weathering and rapid consumption of acidity by calcite dissolution dominate the proton balance. At an acidity production rate of 7.8 meq. kg-I year! of waste rock and a calcite alkalinity reservoir of 0-60 meq. kg-I, we expect the waste rock leachate to remain near-neutral pH for 0-8 years. When calcite is consumed and pH drops, dissolution of previously precipitated copper on the the order of 0-1.8 mmole copper kg-I of waste rock may temporarily increase the pollution load at the site.
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A method of studying ball flow by ditigal computer
(Australian Atomic Energy Commission, 1967-02-16) Bennett, NW
Ball flow may be studied with the aid of a digital computer. The method consists of calculating elastic forces due to simple interactions and using these forces to track individual balls. Any shape of container may be simulated exactly, although protrusions into the container present difficulties, To date, only two-dimensional systems have been studied, but the method may be extended easily into three dimensions at a penalty of a tenfold increase in calculation timer This is caused by the extra dimension, the greater number of neighbours per ball and a more complete elastic analysis which must be applied in three dimensions Since elastic forces are being studied, the vibrations due to these forces must be followed, For hard balls this may involve real time intervals of milliseconds which may take seconds to calculate on the IBM 7040 computer on site. A circulation model may be easily set up by arranging for balls which have fallen out of the bottom of a container to be replaced at the top of the array of balls. The forces between balls and between a ball and the container wall are known at all times and may be given as output by the machine. The position and velocity of all balls is also known, and from the ball positions the voidage may be calculated. A model involving friction has been investigated in simple situations. The friction model allows balls in contact to move against each other for a limited distancer A force may be associated with the distance of slip and the force between the balls. The point of maximum slip corresponds to the point of limiting friction. An estimate is given of the cost to perform simple experimenter