20 January (Wednesday), 11:00am, B83 Conference Room. Hosted by Weijian Lu Robert Williams "Evolution of the Cold Neutron Research Facilities at the NIST Center for Neutron Research
20 January (Wednesday), 2:00pm, B83 Conference Room Masataka Ohkubo AIST-Tsukuba "X-ray absorption spectroscopy with superconducting detectors for trace light elements"
4 February (Thursday), 11:00am, B83 Conference Room. Hosted by Vanessa Peterson Judy Hart UNSW "Design of novel photocatalysts from first principles"
5 February (Friday), 11:00am, B83 Conference Room. Hosted by Robert Robinson Ralf Engels Forschungszentrum Jülich "Scintillation Detector Systems developed at the ZEA-2 in Juelich"
16 February (Tuesday), 10:30am, B83 Conference Room. Hosted by Elliot Gilbert Rex Hjelm Los Alamos "Small-Angle Neutron Scattering on Fuel Cells"
18 February (Thursday), 11:00am, B83 Conference Room Karina Meredith IER, ANSTO "Application of environmental isotopes to understand the hydrological cycle"
25 February (Thursday), 11:00am, B83 Conference Room. Hosted by Gail N. Iles David Merz University of Wollongong "Luminescent variation through solid state phosphor modification"
25 February (Thursday), 11:20am, B83 Conference Room. Hosted by Gail N. Iles Carla Raymond Macquarie University "Using 3D Imaging Techniques to Investigate Mummified Remains"
8 March (Tuesday), 2:00pm, B83 Conference Room. Hosted by Robert Robinson Dimitri Argyriou European Spallation Source "Current status of the ESS"
The European Spallation Source (ESS) is a multi-disciplinary research centre based on the world’s most powerful neutron source. This new facility will be up to 100 times brighter than today's leading facilities, enabling new opportunities for researchers in the fields of life sciences, energy, environmental technology, cultural heritage and fundamental physics.
In February 2016, the ESS passed a 20% completion milestone, and on-site installations will begin this year.
18 March (Friday), 11:00am, B83 Conference Room Max Avdeev Bragg Institute, ANSTO "ANSTO magnetic characterisation facility"
7 April (Thursday), 11:00am, B83 Conference Room. Hosted by Tamim Darwish Paul Cumming Queensland University of Technology "Preclinical studies of new PET tracers for old molecular targets"
21 April (Thursday), 11:00am, B83 Conference Room Heloisa Bordallo University of Copenhagen / ESS "Microscopic view of hydrogen motion from neutron scattering"
5 May (Thursday), 2:00pm, B83 Conference Room Andrew Berry Bragg Institute, ANSTO "Status of the Directional Neutron Spectrometer Project"
12 May (Thursday), 11:00am, B83 Conference Room Norman Xiong & Jitendra Mata ANSTO "Electronic Notebook for Neutron Scattering Experiments"
12 May (Thursday), 11:30am, B83 Conference Room Norman Xiong ANSTO "Online Data Reduction for Neutron Scattering Experiments"
19 May (Thursday), 11:00am, B83 Conference Room Leigh Aldous University of New South Wales "Salty solvents: Electrochemistry, molecular lubrication, banana batteries and other stories"
27 May (Friday), 11:00am, B82 Conference Room. Hosted by Anton Stampfl Professor Dirk Manske MPI Stuttgart and FU Berlin "Superconductors in non-equilibrium: Higgs oscillations and induced superconductivity "
30 May (Monday), 11:00am, B83 Conference Room. Hosted by Clemens Ulrich Prof Michael Ruebhausen "Charge transfer dynamics in transition-metal centers – applications to bio-inorganic model compounds and hard condensed matter"
2 June (Thursday), 11:00am, B83 Conference Room. Hosted by Gail N. Iles Giuseppe Tettamanzi UNSW "Precise GHz single-electron pumping with silicon
9 June (Thursday), 2:00pm, B83 Conference Room. Hosted by Helen Maynard-Casely Morgan Cable Jet Propulsion Laboratory, NASA "Exploring Mars and Titan using analogues on Earth"
16 June (Thursday), 11:00am, B83 Conference Room Stewart Pullen ANSTO "My Time at the European Spallation Source"
23 June (Thursday), 10:30am, B83 Conference Room. Hosted by Helen Maynard-Casely Tim Dean The Conversation "Training Session: How to write for The Conversation"
30 June (Thursday), 2:00pm, B83 Conference Room. Hosted by Robert Robinson Javier Santisteban Argentinean Atomic Energy Commission (CNEA) "The Argentinean Neutron Beams Laboratory Project"
7 July (Thursday), 10:30am, B83 Conference Room. Hosted by Klaus-Dieter Liss Dr. Yuji Sano Japan Science and Technology Agency "ImPACT: A Five-year Program to Realize Ultra-compact Power Lasers"
7 July (Thursday), 11:00am, B83 Conference Room. Hosted by Klaus-Dieter Liss Prof. Tomokazu Sano Osaka University "Ultrafast structural dynamics of shock-compressed iron probed with XFEL"
7 July (Thursday), 11:30am, B83 Conference Room. Hosted by Klaus-Dieter Liss Prof. Seiichiro Tsutsumi Osaka University "Mechanical Fatigue Behaviour Under Macroscopically Elastic Stress Cycles"
14 July (Thursday), 11:00am, B83 Conference Room Lou Vance ANSTO "History and Development of Synroc"
28 July (Thursday), 11:00am, B83 Conference Room David Cortie ANSTO / ANU "Ultra-sensitive nuclear magnetic resonance measured using beta-decay from radioactive isotopes"
16 August (Tuesday), 11:00am, B83 Conference Room. Hosted by Max Avdeev Shirley Meng University of California San Diego "Neutron Diffraction for Exploring Li Oxides for Battery Materials
25 August (Thursday), 11:00am, B83 Conference Room Ed Obbard Senior Lecturer, UNSW Australia Electrical Enginee "Performance of UN-U3Si2 composite accident tolerant nuclear fuel"
In this seminar I will introduce UNSW’s nuclear
research group and present my newest experimental project in accident tolerant
fuels with KTH, Stockholm, Westinghouse Electric and ANSTO. UN/silicide
composite fuel combines the excellent thermal properties (22W/mK at 600 °C, Tm 2850°C)
of UN with the oxidation resistance of silicides by encapsulating uranium
nitride particles in a silicide intergranular matrix. Elemental SEM maps of
nitrogen distribution in UN-10wt.%U3Si2 after
sintering show formation of a three-phase microstructure – UN, U3Si2 and
a recently reported ternary phase. It is not known whether presence of the
ternary phase degrades the accident tolerant properties. The aim of our
experiment is to simulate both reactor service and accident conditions
experienced by UN/U3Si2 ATF composite, while
collecting in-situ neutron power diffraction data on WOMBAT for quantitative
phase analysis. The results will inform basic science on uranium compounds and
show indicate performance of this material in realistic service conditions.
16 September (Friday), 11:00am, B83 Conference Room. Hosted by Garry McIntyre Matthew Tate ANSTO "Structure-property relationships of Bi(III)-containing oxide ion conductors"
21 September (Wednesday), 11:00am, B83 Conference Room. Hosted by Klaus-Dieter Liss A/Prof Megumi Kawasaki "Processing of ultrafine-grained and bulk nanostructured materials through the application of severe plastic deformation"
29 September (Thursday), 11:00am, B83 Conference Room. Hosted by Frank Klose Michael Ohl Oak Ridge National Laboratory "Neutron Spin Echo: The Technology and the Science"
When Neutrons were used as probes to understand the properties of matter first, it became immediately obvious, inelastic processes could be studied as well. The higher the energy - resolution of Neutron scattering instruments got, the better one could unravel slow dynamics. Subsequently, Neutron scattering instruments were pushed more and more to higher resolution and more ideas were developed. The principle of Neutron Spin Echo (NSE) to encode and decode the energy transfer of Neutrons in the spin of the scattered Neutrons is well known since 1971. About 8 years later IN11, the first NSE spectrometer worldwide, at the Institute Laue-Langevin in Grenoble, France was built and went into operation with first results. This was the start of many more NSE spectrometer to come later and up to now NSE spectrometer still possess the highest energy resolution in the field of Neutron scattering. As of today worldwide about 6 NSE spectrometer of the generic IN11 type are operated in Europe and the USA. The newest instrument is the NSE at the Spallation Neutron Source in Oak Ridge, USA. A wide field of scientific questions could be addressed to this new type of instruments. They are mainly in the field of soft matter e.g. polymer main chain and side group motions, glass forming properties, internal dynamics of proteins, functionalities of bacteria to name just a few. In this talk, the latest technology and newest scientific questions shall be addressed.
13 October (Thursday), 11:00am, B83 Conference Room. Hosted by Anton Stampfl Leo Cussen Cussen Consulting "Optimising Constant Wavelength Neutron Powder Diffractometers"
This talk describes the analytic optimisation of conventional constant wavelength neutron powder diffractometers.
The process matches the resolution contributions from in-plane beam divergences, out-of-plane divergences and wavelength spread to each other and to measurement needs. The approach minimises losses rather than attempting to maximise flux. A simple novel primary spectrometer design is described which delivers rectangular rather than the usual triangular transmission profiles and can deliver great flexibility in resolution characteristics.
Independently conducted McStas and VITESS simulations compare scans from current best practice with those from optimised machines. The results support the analysis and show that substantial improvements in count rate, resolution and scan range are possible. Implementing the instrument changes needed to deliver this improved performance should be simple and cheap. The approach shows how to get the best from existing machines and not just how to design new ones.
The optimisation method described can certainly be adapted to optimise single crystal diffractometers and three axis spectrometers and probably also to treat time-of-flight diffractometers and spectrometers.
20 October (Thursday), 11:00am, B83 Conference Room Anton Stampfl ANSTO "Neutron Spectroscopy for Advanced Materials Characterisation and Development: A suite of high end tools for sophisticated analysis"
This is the Plenary talk that Anton Stampfl will deliver at the 4th International Conference on Competitive Materials and Technology Processes, to be held in Lillafüred, Hungary, October 3-7, 2016.
At the research reactor, OPAL, in Sydney, a truly impressive variety of spectroscopic studies are being carried out into areas from gas entrapment in pipelines, clay swelling, solar cell development and energy production, immobilisation of radioactive waste, advanced materials characterisation for fourth/fifth generation and fusion reactors, catalysis for the green economy, sequestration, electronic applications (superconductivity, spintronics, quantum computing), and isotopic engineering.
Neutrons are a fantastic tool to use that provide sophisticated high end analysis of the most difficult of problems in advanced materials development and characterisation.
27 October (Thursday), 11:00am, B83 Conference Room Philip Blower Kings College London "Coordination Chemistry From SPECT to PET: New Tracers for Old Targets"
3 November (Thursday), 11:00am, B83 Conference Room. Hosted by Tamim Darwish Rachel Codd University of Sydney "Molecular scaffolds for generating new pharmaceutics and imaging agents
15 November (Tuesday), 2:00pm, B83 Conference Room. Hosted by Tamim Darwish Søren Midtgaard Niels Bohr Institute, Denmark "Investigating membrane proteins using novel deuterated detergents and SANS"
1 December (Thursday), 10:30am, B83 Conference Room ANSTO CEO "Staff Forum"
8 December (Thursday), 11:00am, B83 Conference Room. Hosted by Anna Sokolova Paul Thomas and Tony Smallwood University of Technology Sydney "Packing Array Structures in Opal"
12 December (Monday), 2:00pm, B83 Conference Room. Hosted by Kirrily Rule Nic Shannon Okinawa Institute of Science and Technology "Quantum Spin Ice "
Spin ice, with its magnetic monopole excitations, is perhaps the outstanding example a classical, topological spin liquid. Nonetheless, the role of quantum effects in spin-ice materials remains poorly understood. This question gain fresh urgency from studies of "quantum spin-ice" materials such as Yb2Ti2O7 and Pr2Zr2O7, and recent experiments which suggest that the spin ice Dy2Ti2O7 may undergo a phase transition at very low temperature.
In this talk, we explore some of the new phenomena which can arise as a result of quantum fluctuations in a spin-ice material. We show how quantum tunnelling between different spin-ice configurations can convert spin-ice into a quantum spin liquid with photon-like excitations, review the numerical evidence that such a state exists, and discuss how it might be identified in experiment.
We also consider the nature of the quantum ground state in a realistic model of spin ice, directly motivated by Dy2Ti2O7. We identify the principles which govern magnetic order in the presence of long-range dipolar interactions, and use quantum Monte Carlo simulation to show that only a very small amount of quantum tunnelling is needed to convert these ordered states into a quantum spin liquid.
22 December (Thursday), 11:00am, B83 Conference Room. Hosted by Klaus-Dieter Liss Andreas Magerl "50 years of neutron backscattering"
23 December (Friday), 11:00am, B83 Conference Room Gail Iles ANSTO "The 2016 ACNS Seminar Series - Summary"
In 2016 we have enjoyed another successful year of seminars at the
ACNS. We have been visited by speakers from all across Australia, and
indeed the globe to tell us about their research.
In this short seminar we will present the statistics from 2016, including
audience attendance, diversity etc. We will also announce the winner of
the 'Best Question' raffle.
Finally, after two years of organising the Bragg Institute / ACNS seminars,
Gail will step down from this role and leave sole responsibility for
organisation to Anthony Duff.
31 December (Saturday), 11:00am, B83 Conference Room. Hosted by Chris Garvey Keyun Shou Forschungszentrum Jülich "Self-assembled monolayers based on halogen bonding"