http://dspace101.ansto.gov.au:8080/dspace The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. 2021-02-23T01:37:24Z https://apo.ansto.gov.au/dspace/handle/10238/10424 Title: Novel non destructive sample analysis techniques using neutron scattering Authors: Olsen, SR; Gilbert, EP; Booth, N; Pullen, SA; Imperia, P; Peterson, VK; Garbe, U; Luzin, V; Paradowska, AM; Studer, AJ; Liss, KD Abstract: In late 2006 the new 20MW Open Pool Australian Light Water Reactor (OPAL) went critical for the first time. Since 2007 thousands of scientists and engineers have used the neutron beam instruments to perform a wide range of non-destructive studies of samples covering physics, chemistry, biology, engineering and materials science. Neutrons provide a wealth of information about the state of materials including structure, residual stress, magnetic properties and dynamic properties. As neutrons scatter from nuclei and not electrons, they are highly penetrating, capable of travelling tens of millimeters into most metals. Neutrons behave, for to some extent, like tiny bar magnets and therefore can be used to investigate the magnetic properties of materials such as superconductors and computor memories. Recent engineering studies - often undertaken in situ at industrially relevant conditions - include railway sleepers, turbine blades, polymer processing, lithium battery testing, and titanium alloys. © 2021 Informit 2014-01-01T00:00:00Z https://apo.ansto.gov.au/dspace/handle/10238/10423 Title: Energy-resolved neutron imaging options at a small angle neutron scattering instrument at the Australian Center for Neutron Scattering Authors: Tremsin, AS; Sokolova, AV; Salvemini, F; Luzin, V; Paradowska, AM; Muránsky, O; Kirkwood, HJ; Abbey, B; Wensrich, CM; Kisi, EH Abstract: Energy-resolved neutron imaging experiments conducted on the Small Angle Neutron Scattering (SANS) instrument, Bilby, demonstrate how the capabilities of this instrument can be enhanced by a relatively simple addition of a compact neutron counting detector. Together with possible SANS sample surveying and location of the region of interest, this instrument is attractive for many imaging applications. In particular, the combination of the cold spectrum of the neutron beam and its pulsed nature enables unique non-destructive studies of the internal structure for samples that are opaque to other more traditional techniques. In addition to conventional white beam neutron radiography, we conducted energy-resolved imaging experiments capable of resolving features related to microstructure in crystalline materials with a spatial resolution down to ∼0.1 mm. The optimized settings for the beamline configuration were determined for the imaging modality, where the compromise between the beam intensity and the achievable spatial resolution is of key concern. © 2020 AIP Publishing LLC 2019-03-26T00:00:00Z https://apo.ansto.gov.au/dspace/handle/10238/10422 Title: Polycrystalline materials analysis using the Maia pixelated energy-dispersive X-ray area detector Authors: Kirkwood, HJ; De Jonge, MD; Howard, DL; Ryan, CG; Van Riessen, G; Hofmann, F; Rowles, MR; Paradowska, AM; Abbey, B Abstract: Elemental, chemical, and structural analysis of polycrystalline materials at the micron scale is frequently carried out using microfocused synchrotron X-ray beams, sometimes on multiple instruments. The Maia pixelated energy-dispersive X-ray area detector enables the simultaneous collection of X-ray fluorescence (XRF) and diffraction because of the relatively large solid angle and number of pixels when compared with other systems. The large solid angle also permits extraction of surface topography because of changes in self-absorption. This work demonstrates the capability of the Maia detector for simultaneous measurement of XRF and diffraction for mapping the short- and long-range order across the grain structure in a Ni polycrystalline foil. © International Centre for Diffraction Data 2017 2017-09-26T00:00:00Z https://apo.ansto.gov.au/dspace/handle/10238/10421 Title: Industrial application experiments on the neutron imaging instrument DINGO Authors: Garbe, U; Ahuja, Y; Ibrahim, R; Li, H; Aldridge, LP; Salvemini, F; Paradowska, AM Abstract: The new neutron radiography / tomography / imaging instrument DINGO is operational since October 2014 to support the area of neutron imaging research at ANSTO. The instrument is designed for a diverse community in areas like defense, industrial, cultural heritage and archaeology applications. In the field of industrial application it provides a useful tool for studying cracking and defects in concrete or other structural material. Since being operational we gathered experience with industrial applications and commercial customers demanding beam time on DINGO. The instrument is a high flux facility with is 5.3 × 107 [n/(cm2s)] (confirmed by gold foil activation) for an L/D of approximately 500 at HB-2. A special feature of DINGO is the in-pile collimator position 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 separates the two beams by blocking one and positions another aperture for the other beam. The neutron beam size can be adjusted to the sample size from 50 × 50 mm2 to 200 × 200 mm2 with a resulting pixel size from 27 μm to ∼100 μm. The whole instrument operates in two different positions, one for high resolution and one for high speed. We would like to present our first experience with commercial customers, scientific proposals with industrial applications and how to be customer ready. © 2017 The Author(s). Published by Elsevier B.V. 2017-01-01T00:00:00Z