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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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    Elucidation of atomic and magnetic structures of Al3+-doped Li-ferrite (LiFe5O8) compounds
    (Elsevier, 2025-07) Inckemann, S; Park, SH; Arauzo, A; Avdeev, M
    Chemical stress for structural deformation i , denoted as Li60Al40, and, denoted as Li50Al50, was achieved by introducing into α- known as a high-temperature multiferroic. These new solid solution compounds crystallize in the tetragonal space group P43212. Their magnetic spin arrangements at 300 K could be determined in the magnetic space group P4321 using high-resolution neutron powder diffraction (HRNPD) data. Within the experimental uncertainty in HRNPD, the magnetic moments of ions within in the B-sublattice are arranged along the crystallographic c axis and antiparallel to those of in the A-sublattice. In comparison to the Fe-rich Li60Al40, the Fe-poor Li50Al50 shows a stronger dilute effect for the higher Li content at the octahedral site Fe1b. The dilute effect is associated with the lowering of both saturation magnetization and. On the other hand, Li50Al50 shows large electric dipole moments in the strong distorted and polyhedra. © 2025 The Authors. Published by Elsevier Inc.
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    Single-exposure elemental differentiation and texture-sensitive phase-retrieval imaging with a neutron-counting microchannel-plate detector
    (American Physical Society, 2024-05-30) Arhatari, BD; Paganin, DM; Kirkwood, HJ; Tremsin, AS; Gureyev, TE; Korsunsky, AM; Kockelmann, W; Hofmann, F; Huwald, E; Zhang, SY; Kelleher, JF; Abbey, B
    Microchannel-plate (MCP) detectors, when used at pulsed-neutron-source instruments, offer the possibility of high spatial resolution and high contrast imaging with pixel-level spectroscopic information. Here we demonstrate the possibility of multimodal analysis including total neutron cross-section spectra measurements, quantitative material differentiation imaging, and texture-sensitive in-line phase imaging, from a single exposure using an MCP detector. This multimodal approach operates in full-field imaging mode, with the neutron transmission spectra acquired at each individual detector pixel. Due to the polychromatic nature of the beam and spectroscopic resolving capability of the detector, no energy scanning is required. Good agreement with the library reference data is demonstrated for neutron cross-section spectra measurements. Two different images corresponding to two selected energy bandwidths are used for elemental differentiation imaging. Moreover, the presence of changes in texture, i.e., preferred grain orientation, in the sample is identified from our phase-retrieval imaging results. ©2025 American Physical Society.
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    Measurement of the intensity ratio of Auger and conversion electrons for the electron capture decay of 125I
    (IOP Publishing, 2018-03-28) Alotiby, M; Greguric, ID; Kibédi, T; Lee, BQ; Roberts, MP; Stuchbery, AE; Tee, P; Tornyi, T; Vos, M
    Auger electrons emitted after nuclear decay have potential application in targeted cancer therapy. For this purpose it is important to know the Auger electron yield per nuclear decay. In this work we describe a measurement of the ratio of the number of conversion electrons (emitted as part of the nuclear decay process) to the number of Auger electrons (emitted as part of the atomic relaxation process after the nuclear decay) for the case of 125I. Results are compared with Monte-Carlo type simulations of the relaxation cascade using the BrIccEmis code. Our results indicate that for 125I the calculations based on rates from the Evaluated Atomic Data Library underestimate the K Auger yields by 20%. © 2018 Institute of Physics and Engineering in Medicine
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    A functional digital model of the Dingo thermal neutron imaging beamline
    (Springer Nature, 2025-04-02) Jakubowski, K; Bevitt, JJ; Howell, NR; Dobie, C; Sierro, F; Garbe, U; Olsen, SR; Stopic, A; Franklin, DR; Tran, LT; Rosenfeld, AB; Guatelli, S; Safavi-Naeini, M
    In this work, we extend our previously published Monte Carlo simulation model of the Dingo thermal neutron beamline at the Australian Centre for Neutron Scattering model by (1) including a sapphire crystal filter in the model, and (2) utilising the NCrystal package to simulate thermal neutron interactions with the crystalline structure. In addition to previous experimental measurements performed in the beamline's high-resolution mode, the beam was experimentally characterised in its high-intensity mode upstream from the sample stage (at the tertiary shutter wall exit) and these measurements were used as inputs for the model. The planar neutron distributions were optimised at both the sample stage and tertiary shutter wall exit, and model predictions were validated against experimental gold wire activation measurements. For both configurations-with and without the sapphire filter-we measured neutron fluxes, and performed neutron activation analysis using 11 materials to improve the accuracy of the neutron spectrum in the model relative to the original version. Using the optimised spectrum, we simulated out-of-beam neutron spectra that were further used as the initial input in unfolding code to explore the capability of the current solution to accurately reproduce the experimental results. The normalised neutron planar distribution from the simulation was on average within 2% at the centre, and 6% and 24% at the penumbra of the experimental results at the tertiary shutter wall exit and sample stage, respectively. The specific activities predicted by the refined model were within an average of 13% and 5% of the experimentally measured activities with and without the sapphire filter, respectively. We observed a decrease of around 45% in thermal neutron flux when the sapphire filter is used, which has been reproduced by the model. The maximum value of the logarithm of the ratio of simulated to experimental out-of-beam neutron spectra across 8 locations was 0.6 compared to 2.0 in the previous work, resulting in an average normalised root mean squared error between the unfolded spectrum and experimental measurements of 5% and 9% with and without the filter, respectively. Without the sapphire filter, the optimised predicted in-beam neutron spectrum consists of around 59% thermal, 21% epithermal and 20% fast neutrons, while the addition of the filter provides an almost pure (approximately 98%) thermal neutron beam. © Crown 2025. Open Access This article is licensed under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 International Licence.
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    A tunable one-pot three-component synthesis of an 125I and Gd-labelled star polymer nanoparticle for hybrid imaging with MRI and nuclear medicine
    (Royal Society of Chemistry, 2018-06-11) Esser, L; Lengkeek, NA; Moffat, BA; Vu, MN; Greguric, ID; Quinn, JF; Davis, TP; Whittaker, MR
    The successful treatment of a disease via individualized treatment protocols relies on an early and accurate diagnosis. Advances to imaging hardware, such as hybrid PET/MRI scanners, have overcome the inherit disadvantages associated with the individual imaging modality. However, well-designed multimodal contrast agents are essential to optimally exploit hybrid PET/MRI systems. Herein, we show that core-cross-linked azide-functional star polymer nanoparticles can be simultaneously labelled with a radioisotope (radioiodine) and a clinically-used MRI contrast agent (Gd-DOTA) by exploiting an elegant copper-catalyzed one-pot three-component reaction creating an iodotriazole. The nanoparticles have a longitudinal relaxivity of 5.7 mM−1 s−1 at 7 T (as compared to 3.8 mM−1 s−1 for commercially available Gd-DTPA), and a radiochemical yield of 58% was achieved. Furthermore, we show that the radioiodine content can be fine-tuned without affecting the final Gd-DOTA loading. While we have demonstrated the versatility of the approach with 125I, an isotope widely used in biological research, the availability of various radioiodine isotopes enables potential applications in SPECT (123I), PET (124I) and in theranostics by combining radioimmunotherapy (131I) with MRI. © Royal Society of Chemistry 2026