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ANSTO Publications Online

Welcome to the ANSTO Institutional Repository known as APO.

The APO database has been migrated to version 8.3. 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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Recent Submissions

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    Tomographic reconstruction of two-dimensional residual strain fields from Bragg-edge neutron imaging
    (American Physical Society (APS), 2018-12-13) Gregg, AWT; Hendriks, JN; Wensrich, CM; Wills, A; Tremsin, AS; Luzin, V; Shinohara, T; Kirstein, O; Meylan, MH; Kisi, EH
    Bragg-edge strain imaging from energy-resolved neutron-transmission measurements poses an interesting tomography problem. The solution to this problem will allow the reconstruction of detailed triaxial stress and strain distributions within polycrystalline solids from sets of Bragg-edge strain images. Work over the last decade has provided some solutions for a limited number of special cases. In this paper we provide a general approach to reconstruction of an arbitrary system based on a least-squares process constrained by equilibrium. This approach is developed in two dimensions before it is demonstrated experimentally on two samples with use of the RADEN instrument at the Japan Proton Accelerator Research Complex spallation neutron source. Validation of the resulting reconstructions is provided through a comparison with conventional constant-wavelength strain measurements performed with the KOWARI engineering diffractometer of the Australian Nuclear Science and Technology Organisation. The paper concludes with a discussion on the range of problems to be addressed in a three-dimensional implementation. © 2018 American Physical Society.
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    Life assessment and inspection of a hot reheat turbine bifurcation
    (Elsevier, 2011-09) Payten, W; Charman, D; Chapman, AG; Bashiri, K; Bendeich, PJ
    A life assessment of a hot reheat bifurcation has been undertaken. Surface breaking crack-like indications were detected in the bifurcation weld. Subsequent replication showed that this was due to significant creep damage in a number of material zones within the weld. This damage was removed by hand dressing until it had been reduced to an acceptable level below which good material remained with minimal damage; this was confirmed by additional replication. A finite element analysis was undertaken based on the elastic rupture reference stress multiplied by weld redistribution factors which quantifies stress redistribution within the weldments. The results indicated that creep damage would be evident on both the external surface of the saddle region and on the inside surface at the crotch position. Additional analysis based on a RIKS procedure and an elastic-perfectly plastic analysis confirmed the results of the rupture reference method. A full re-inspection of the bifurcation branch was recommended before another 10,000h of service was completed as a consequence of this study. At the next inspection recurrence of the damage was found, and internal inspection confirmed the analysis results with damage also present on the internal surface at the crotch position. Based on these findings replacement of the bifurcation has been recommended. Crown copyright © 2011 Published by Elsevier Ltd. All rights reserved.
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    In-situ crystallization of lanthanide titanate stannate (Ln2TiSnO7) pyrochlore in glass: A glass-ceramic system for potential nuclear waste sequestration
    (Elsevier, 2023-04) Kong, LG; Karatchevtseva, I; Wei, T
    Ln 2TiSnO7 (Ln = Nd-Er) pyrochlore glass-ceramics are produced by calcining the pelletized oxide mixture and sodium aluminoborosilicate glass precursor at 1200 °C for 4 h. The ceramic Ln-Ti-Sn oxide mixture is prepared by a soft chemistry route to enhance reactant reactivity and product homogeneity. X-ray diffraction, Raman spectroscopy, and electron microscopy techniques are used to confirm the formation of the pyrochlore structure in glass. The cell parameters of the pyrochlores by Le Bail fitting are consistent with the calculated data. The variation of the lanthanide on pyrochlore A-site has insignificant effect on the Raman F 2 g mode ∼ 310 cm−1, but has an apparent influence on A 1 g mode ∼ 504–512 cm−1, which gradually shifts to low frequencies with increasing Ln 3+ionic radii. The average sizes of the pyrochlore crystals are ∼ 0.31–0.62 μm, which are uniformly distributed in glass phase. These Ln 2TiSnO7 pyrochlore glass-ceramics with mixed elements on B-site, possessing high radiation tolerance feature due to the presence of Sn, could be used as nuclear waste forms. Crown Copyright © 2023 Published by Elsevier B.V. All rights reserved.
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    Carbon and hydrogen isotopes of the wet gases produced by gamma-ray-induced polymerisation of methane: Insights into radiogenic mechanism and natural gas formation
    (Elsevier, 2020-03) Boreham, CJ; Davies, JB
    The 60Co gamma ray radiolysis of methane was undertaken at room temperature and at a low proportion of methane conversion to observe initial polymerisation reactions in the formation of C2─C5 saturated hydrocarbon gases. The gamma ray radiolysis product follows a Schulz-Flory distribution model for the straight-chained C2+ alkane gases consistent with chain propagation by addition of C1 intermediates. The high relative concentration of branched isomers suggests the total product distribution is likely controlled by propagation reactions involving mainly radical intermediates. In particular, the pentane isomers show a relative dominance of the branched isomers with sub-equal amounts of iso-pentane and neo-pentane. Carbon isotopes of the C2─C5 wet gases are all depleted in 13C relative to δ13C methane reactant with δ13C C2 < δ13C C3 and carbon isotope reversals in the C3─C5 gases while only ethane and neo-pentane are depleted in 2H compared to δ2H of the starting methane. As such, these molecular and isotopic features show similar characteristics to abiogenic wet gases found in terrestrial settings. Crown Copyright © 2019 Published by Elsevier Ltd. All rights reserved.
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    Unveiling the anisotropy and mechanism of magnetic alignment of graphene in polymer composites for efficient absorption of THz radiations (0.3–3.0 THz)
    (Elsevier, 2025-11-01) Govindaraj, P; Varghese, S; Sokolova, AV; Han, ML; Juodkazis, S; Appadoo, D; Fuss, FK; Salim, NV; Hameed, N
    Flexible polymer films containing highly aligned graphene flakes were designed using low magnetic field for Terahertz (THz) shielding applications. The alignment of graphene resulted in a unique dark-bright field macroscopic patterns on the cured composite films. On a microscopic scale, the alignment of graphene resulted in a distinctive chain-like structure that favour an effective electron flow path resulting in an electron mobility and optimal electrical conductivity of 7.2 cm2/Vs and 3.3 x 10−7 S/cm, respectively, which is extremely higher than the homogenous composite for the lowest graphene loading of 1 wt%. For the first time, an aligned composite film of 100 μm thickness was characterised using the synchrotron beam in the THz regime – 0.3 to 3.0 THz and exhibited an exceptionally high absorptance of 56.6 % of T-rays for 1 wt% graphene concentration. Simultaneously, the mechanism of orientation and the in-situ alignment of graphene in the magnetic field was characterised using the time-of-flight small angle neutron scattering technique and their probability of alignment, anisotropy factor were estimated. The in-situ neutron experiments indicate that when the applied magnetic field is perpendicular to the wave vector of the incoming neutron beam, a pronounced anisotropy is observed in the total unpolarized beam due to the alignment of graphene flakes. The exploration of magnetic alignment of graphene and determination of optical anisotropy lays foundation for further discovery of aligned graphene-based composite. The outstanding performance and high efficiency of aligned graphene composites present a huge potential in THz devices, polarization control and shielding solutions for T-rays. © 2025 The Authors. Published by Elsevier Ltd. Open Access CC BY 4.0.