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- ItemThe Site and High Field βNMR Properties of 8Li+ Implanted in α-Al2O3(IOP Publishing, 2023-03-01) MacFarlane, WA; Shenton, JK; Salman, Z; Chatzichristos, A; Cortie, DL; Dehn, M; Fujimoto, D; Karner, VL; Kiefl, RF; Koumoulis, D; Levy, CDP; McFadden, RML; McKenzie, I; Morris, GD; Pearson, MR; Stachura, M; Ticknor, JOWe present high (> 2 T) magnetic field βNMR measurements of 8Li+ implanted in single crystals of sapphire, a commonly used backing material for other samples. From the well-resolved quadrupolar splitting, we extract the electric field gradient (EFG) at the implanted 8Li+ site. Comparison with supercell density functional theory calculations of the EFG allows us to identify the octahedral interstitial site as the most likely candidate. In contrast to the zero field βNQR spectra, where multiple singals are detected, only a single site is evident at high field. We discuss possible explanations for this discrepancy. The spin lattice relaxation is extremely slow (1/T1 < 0.02 s−1 ) over a broad temperature range from 4 to 300 K, demonstrating that cross relaxation with the 27Al nuclear spins is quenched in such high magnetic fields.
- ItemTrials and tribulations of communicating ionising radiation to the public - 30 years of reflection(Australiasian Radiation Protection Society, 2012-10-16) McCarthy, LThirty years working in the field of nuclear medicine, confronted with attitudes and beliefs of both fact and fiction regarding risks posed with radiation has been an interesting challenge. Communicating radiation risks, alleviating fear and the benefits of the field of nuclear medicine requires it to be related to a wide variety of public groups or persons for many different reasons, for example; Why nuclear medicine is a worthwhile procedure and we need a reactor in Australia Why do I need to be injected with a radioactive substance and how is that safe Apprehensive nursing staff having to care for a person treated with high doses of radioactive Iodine Why choose a career in Nuclear Medicine Anti-nuclear activists Why can't I just say 1m injecting a dye, like they do in radiography Healthcare 8 radiation protection professionals, and members of the public have the opportunity to break down the barriers and bridge the gap associated with the common misconceptions and fears related to the radiation involved in nuclear medicine, if the information is relayed with simple clarity and honesty. The presentation reviews the trials and tribulations of working with industry and community groups to break down these misconceptions and gain public support in various facets —such as a career, undertaking a diagnostic procedure, caring for a patient and support for a nuclear reactor. The presentation will review the success and pitfalls of pamphlets, videos, forums, training materials, various media and modalities utilised to communicate radiation risks to various groups and or persons.
- ItemEmergence of competency based training in radiation safety and developing training courses incorporating these units, oh! what a task!(Australiasian Radiation Protection Society, 2012-10-16) McCarthy, LIn recent times Government Skills Australia developed ten competency based training units in radiation safety, which are part of the Public Sector training package. The Australian Nuclear Science and Technology Organisation will be implementing these units into the various commercial training programs it has been conducting for the past 1 5 years. Competency based training has long been a part of Vocational Educational Training (VET)and for those who wish to embark on the development of courses based on the radiation safety competency units a steep learning curve is required, involving new terminology, ever changing departments, websites, regulations and guidelines. (an example of this is the NSW Environmental Protection Agency and its many name changes over the past few years). The presentation will describe the steps and pitfalls encountered by ANSTO since embarking on the remake of our radiation safety training courses incorporating the competency based radiation safety units in Public Sector training package PSP04. The presentation will provide an introduction to these units, including recent changes of Certificate IV in Training and Assessment. CertlV in Training and Assessment is a recommended qualification to begin the challenge of working within the VET system. It is essential due to the recent version changes to upgrade the Certificate IV in Training and Assessment TAA40104 qualification to the TAE401 10 qualification. For those interested parties I will provide a "hands on" navigation of VET system websites and overview of the radiation safety competency units.
- ItemOptions for an Australian hadron therapy facility(Australian Nuclear Science and Technology Organisation, 2012-04-20) Boldeman, JWIt is believed that a compelling case can be made for the construction of a very high Hadron Research Facility in Australia. Several proposals have been prepared in the past. In all cases, the accelerator on which the facility was based would have had the capability of producing highly precise and controlled proton beams with variable energies between 60 and 250 MeV. One of the previous proposals also suggested a more advanced accelerator system capable of producing, in addition, carbon beams with energies variable from 120 - 430 MeV/amu. This paper considers some options for a possible Australian Facility.
- ItemEstimating readiological consequences using Java programming language(World Scientific, 1997-09-29) Crawford, J; Hayward, M; Harris, FF; Domel, RUSince its introduction in late 1995, the programming language Java has received wide coverage, focused mostly on Internet programming via Web browsers. Despite this, Java is a general-purpose language suitable for applications in a similar manner to C and Fortran. Due to its object oriented structure, its user interface capabilities and its cross-platform portability, Java has a much wider potential. At the Australian Nuclear Science and Technology Organisation (ANSTO) a model to determine critical parameters affecting radioactive doses to humans following a release of radionuclides into the atmosphere is being developed. Java was chosen because of the Graphical User Interface (GUI) capabilities and its portability across computer platforms, which were a requirement for the application, called RadC0n © World Scientific