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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The relationship between the coherence length of a two-phase mixture and the response of a cylindrical cantilever
(Fourth Australasian Conference on Hydraulics and Fluid Mechanics Organising Committee, 1971-11-29) Harris, RW; Ledwidge, TJ
A preliminary examination of the relationship between the coherence or mixing length of a flowing air—water mixture and the response of a solid cylindrical cantilever in axial air—water flow shows that the r. m. s. strain level at the base of the cantilever increased as the void fraction was increased and decreased as λ/L was decreased*. There was no obvious dependence of the r.m.s. m. s. strain on the values of λ used in these experiments and this result is consistent with theoretical predictions. *λ is the coherence length of the two phase flow and L is the length of the cantilever.
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Study of interactive stresses in WC-Co surface coated systems
(Australian Nuclear Science and Technology Organisation, 2012-01-10) Venter, AM; Luzin, V
Investigation of interaction residual stresses in substrates coated with thin WC-Co surface coated layers where the coefficients of thermal expansion between the substrates and coating are different and to different extents, have been performed with neutron diffraction. This systematic approach was followed with investigations performed on the reference grit-blasted substrates and their HVOF coated WC-Co products. Measurements were possible in both the 200 micro meter thick coatings and the substrates utilizing the KOWARI neutron strain scanner equipped with fixed slits. By means of precise gauge volume positioning of the sub-millimeter gauge volumes, stress gradients through the coated and non-coated substrates were measured and used to derive the coating stress conditions prevailing in the thin coating from the application of a stress balance (Stoney) approach. In addition, the average stresses in the 200 micro meter thick coatings were measured directly, by employing meticulous positional accuracy. Good agreement was obtained between the calculated and measured stress values in the coatings. Investigations were extended to determine the thermal nature of the residual stresses by studying the annealed counterpart samples as well. In this way the evolution of the residual stress upon annealing treatment was established.
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Some interim results of first factorial pebble bed experiments
(Australian Atomic Energy Commission, 1967-02-16) Gatt, FC
Originally it was intended to perform part of the main statistical experiment using "tagged" pebbles; however, due to the great length of time needed for these tagged pebble runs coloured pebbles were used, enabling many to be seeded simultaneously.
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The new neutron imaging station DINGO at OPAL
(Australian Nuclear Science and Technology Organisation, 2012-01-10) Garbe, U
A new neutron imaging instrument will be built to support the area of neutron imaging research (neutron radiography/tomography) at ANSTO. The instrument is planned to be completed end of June 2013 and is currently in the build stage. The designated instrument position for DINGO [1] is the beam port HB-2 in the reactor hall. A special feature of DINGO is the in-pile collimator place in front of the main shutter at HB-2. The collimator offers two pinholes with a possible L/D of 500 and 1000. A secondary collimator will separate the two beams and block one. The whole instrument will operate in two different positions, one for high resolution and one for high speed. The SScanSS [2] software, which was developed by the Materials Engineering group at the Open University in close collaboration with the ENGINX instrument scientists, utilizes Virtual Reality (VR) computer techniques to provide tools for planning, optimizing and executing experiments. The software generated interest at a number of other facilities and a comprehensive re-formulation was undertaken to enable other instruments and positioning systems from within one code. A working system is available at KOWARI the materials science diffractometer at OPAL. The new neutron imaging instrument DINGO will offer a large number of complementary probing methods. For an optimal combination of strain scanning and imaging on the same sample it is important to define a generalised coordinate system. The sample shape has to be scanned with a laser scanner and later on scanned at characteristic points at the instrument as well.
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Ionisation processes in low pressure N2 plasmas
(AINSE Plasma Physics Conference. & Australian Institute of Nuclear Science and Engineering, 1989-02-06) Donnelly, IJ; Rose, EK
The population densities of N2+, N+, N++ etc. ions that can be obtained by applying RF energy to N2 gas at pressures of about 1 mtorr are of particular interest for plasma immersion ion implantation. A cross-section library for the electron ionisation of nitrogen molecules, atoms and ions has been assembled and used for the derivation of reaction rates assuming a Maxwellian distribution of electron energies. For a range of fixed electron temperatures and filling pressures, the time-evolution of the ionised states and their final steady-state values have been calculated for conditions appropriate to glow discharge plasmas in which the dominant recombination mechanism occurs via the plasma—wall interaction. We have found that there is zero steady-state ionisation below a certain electron temperature Tcl . Between Tcl and a 1 higher temperature Tc2 there are two steady-state solutions possible, one with low and one with high electron density, and above Tc2 only the high density solution exists. The temperatures Tc1 and Tc2 are functions of filling pressure and the plasma confinement time. In typical glow discharge plasmas, only the lower density branch is accessible because of RF power constraints. This limits the electron temperature in such plasmas to the range Tc1< Te< Tc2.