Superdeformed nuclei and their decay: challenging nuclear models and probing quantum tunnelling. Nuclear superdeformation, where the atomic nucleus adopts an elongated, ellipsoidal shape and can undergo rapid rotation, offers a fascinating opportunity to study quantum mechanical effects in a system where single-particle and collective regimes overlap. The superdeformed shape itself is a spectacular example of collective motion in a mesoscopic system, while the rapid change to a sperhical shape ....Superdeformed nuclei and their decay: challenging nuclear models and probing quantum tunnelling. Nuclear superdeformation, where the atomic nucleus adopts an elongated, ellipsoidal shape and can undergo rapid rotation, offers a fascinating opportunity to study quantum mechanical effects in a system where single-particle and collective regimes overlap. The superdeformed shape itself is a spectacular example of collective motion in a mesoscopic system, while the rapid change to a sperhical shape is an excellent example of quantum-assisted tunnelling. The results of this project will shed light on this important process and provide a stringent test of our understanding of the nucleus.Read moreRead less
Isomers as Probes of Nuclear Structure and Sources of Energetic Photons. The aim is to study exotic long-lived states in nuclei using accelerator facilities in Australia and overseas. This involves the development of sensitive instrumentation and will lead to a new understanding of how such states are formed, of how they may be used to identify the structure of exotic nuclei, and on the limits of stability of nuclei in general. Isomers represent a special form of nuclear matter and they play a r ....Isomers as Probes of Nuclear Structure and Sources of Energetic Photons. The aim is to study exotic long-lived states in nuclei using accelerator facilities in Australia and overseas. This involves the development of sensitive instrumentation and will lead to a new understanding of how such states are formed, of how they may be used to identify the structure of exotic nuclei, and on the limits of stability of nuclei in general. Isomers represent a special form of nuclear matter and they play a role in the formation of the elements in stellar nucleosynthesis. Stimulated isomer decay may ultimately lead to new forms of energy storage and gamma-ray lasers.Read moreRead less
Quantum-number purity and limits to the formation of nuclear K-isomers. This internationally competitive research will result in new knowledge and the substantiation of Australian research in the nuclear structure area, as well as adding to our role in international scientific collaborations. The research is an important component of the local expertise in nuclear science established using Australian facilities which provide the major training ground for basic research, a variety of application ....Quantum-number purity and limits to the formation of nuclear K-isomers. This internationally competitive research will result in new knowledge and the substantiation of Australian research in the nuclear structure area, as well as adding to our role in international scientific collaborations. The research is an important component of the local expertise in nuclear science established using Australian facilities which provide the major training ground for basic research, a variety of applications and which also provide a source of strategically important expertise.
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Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale. Developing an Australian rare isotope beam capability with unique features will be a breakthrough in Australia's capability in science. It will create new opportunities for local research with radioactive isotope beams, a field being vigorously developed world-wide, as new access to short-lived radioactive isotopes will open up many opportunities in fundamental research an ....Developing and exploiting a beam of exotic neutron halo nuclei: probing quantum coherence and decoherence at the femtoscale. Developing an Australian rare isotope beam capability with unique features will be a breakthrough in Australia's capability in science. It will create new opportunities for local research with radioactive isotope beams, a field being vigorously developed world-wide, as new access to short-lived radioactive isotopes will open up many opportunities in fundamental research and applications. The experience and strong international linkages from this project will facilitate the longer-term use of future large-scale international facilities. This project will also build links with other areas of research strength in Australia, and keep us at the cutting-edge in research and training in nuclear science, a matter of national importance.Read moreRead less
Breakup and Fusion of Stable and Radioactive Nuclei. All Research Priority areas use tools based on nuclear physics research. Further advances will come from new A$1bn accelerators of radioactive nuclei. Exploiting our new ideas, we will develop a unified framework allowing prediction of the products of nuclear reactions with stable and radioactive nuclei, giving a better understanding of the fundamental process of nuclear fusion, and of radioactive beam applications. Early participation in a si ....Breakup and Fusion of Stable and Radioactive Nuclei. All Research Priority areas use tools based on nuclear physics research. Further advances will come from new A$1bn accelerators of radioactive nuclei. Exploiting our new ideas, we will develop a unified framework allowing prediction of the products of nuclear reactions with stable and radioactive nuclei, giving a better understanding of the fundamental process of nuclear fusion, and of radioactive beam applications. Early participation in a significant new area of research will strengthen Australia's capacity to exploit future opportunities with these accelerators. Top-level research training in nuclear physics, a subject with strategic implications for Australia, will help in the forthcoming international shortage of nuclear experts. Read moreRead less
Magnetic moments of radioactive beams - an incisive probe of novel structures in neutron-rich nuclei. This project gives Australian scientists, whose expertise underpins recent ground-breaking success, the opportunity for continued leadership in research with international large-scale radioactive beam facilities - a scientific frontier of high technical and intellectual standing. In the process of studying the fundamental goal of nuclear physics, to reach a unified understanding of all nuclei, i ....Magnetic moments of radioactive beams - an incisive probe of novel structures in neutron-rich nuclei. This project gives Australian scientists, whose expertise underpins recent ground-breaking success, the opportunity for continued leadership in research with international large-scale radioactive beam facilities - a scientific frontier of high technical and intellectual standing. In the process of studying the fundamental goal of nuclear physics, to reach a unified understanding of all nuclei, it will develop the basic science needed for future applications of exotic isotopes, e.g. in materials science and medicine. Including experiments in Australia and abroad, it offers an exceptional breadth of training to address the shortage of nuclear expertise needed by the health sector, industry, government, and for national security.Read moreRead less
Alpha-particle cluster structure in light nuclei: helping and hindering fusion? A new, efficient detector system will be designed and built to answer a question never before asked - can the special structures of carbon, resembling three alpha-particles, assist rather than hinder the process of fusion with heavy nuclei? This question has arisen through my recent work published in Nature, which showed that in reactions with heavy nuclei, paradoxically both fusion and break-up into alpha-particles ....Alpha-particle cluster structure in light nuclei: helping and hindering fusion? A new, efficient detector system will be designed and built to answer a question never before asked - can the special structures of carbon, resembling three alpha-particles, assist rather than hinder the process of fusion with heavy nuclei? This question has arisen through my recent work published in Nature, which showed that in reactions with heavy nuclei, paradoxically both fusion and break-up into alpha-particles are more likely for carbon than for neighbouring nuclei. These results defy interpretation within the standard theory of nuclear fusion. The project will help to maintain Australia's world-leading position in the study of nuclear fusion.
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Reaching the superheavy elements: a new approach with a novel ultra-sensitive detector array. Our project aims to build the knowledge base underpinning the creation of new heavy elements and isotopes. This first direct investigation of the hoped-for benefits of using radioactive beams will enhance the strong reputation of Australian research in the fundamental subject of nuclear fusion. The unique and sophisticated scientific instrument to be developed will enhance the capability of our RIEF-fun ....Reaching the superheavy elements: a new approach with a novel ultra-sensitive detector array. Our project aims to build the knowledge base underpinning the creation of new heavy elements and isotopes. This first direct investigation of the hoped-for benefits of using radioactive beams will enhance the strong reputation of Australian research in the fundamental subject of nuclear fusion. The unique and sophisticated scientific instrument to be developed will enhance the capability of our RIEF-funded fusion product separator at the ANU, and use at overseas radioactive beam accelerators will showcase Australian technological achievement. This early participation in exciting, leading-edge developments will help Australian researchers to make full use of future, intense radioactive beam facilities, both in pure and applied research. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0453521
Funder
Australian Research Council
Funding Amount
$508,374.00
Summary
National Heavy Ion Accelerator. The principal objectives are to develop a facility to provide energetic heavy ions for basic science, applications and research training. This will be accomplished through an enhancement of a superconducting linear accelerator using innovative technology, and extension of the available beam species through improvements to a large electrostatic tandem accelerator. The facility provides research resources for a broad range of national and international users.
Structure of Exotic Neutron-Rich Nuclei Populated Using Novel Reaction Mechanisms. Over half of the nuclei believed to be stable to particle decay have not been studied due to the lack of available nuclear reactions. We have played a leading role in developing innovative techniques using incomplete-fusion and deep-inelastic reactions to access neutron-rich nuclei that were inaccessible prior to this work. This project aims to study new phenomena in exotic, neutron-rich nuclei, building on Aust ....Structure of Exotic Neutron-Rich Nuclei Populated Using Novel Reaction Mechanisms. Over half of the nuclei believed to be stable to particle decay have not been studied due to the lack of available nuclear reactions. We have played a leading role in developing innovative techniques using incomplete-fusion and deep-inelastic reactions to access neutron-rich nuclei that were inaccessible prior to this work. This project aims to study new phenomena in exotic, neutron-rich nuclei, building on Australia's existing investment in this area, and, through international scientific leadership, facilitating the access of Australian researchers to highly competitive overseas facilities.Read moreRead less