Studies of turbulence and coherent structures in quasi two-dimensional plasmas and fluids. One of the most celebrated but least understood complex systems in nature is turbulent flow. This cross-disciplinary project aims to contribute to basic scientific knowledge of a class of turbulent flows, known as quasi two-dimensional fluids, that typically exhibit self-organizing properties, stable sheared flow, and relatively weak dissipation. The significance lies in the proposed testing, by modelling ....Studies of turbulence and coherent structures in quasi two-dimensional plasmas and fluids. One of the most celebrated but least understood complex systems in nature is turbulent flow. This cross-disciplinary project aims to contribute to basic scientific knowledge of a class of turbulent flows, known as quasi two-dimensional fluids, that typically exhibit self-organizing properties, stable sheared flow, and relatively weak dissipation. The significance lies in the proposed testing, by modelling and simulation studies, of the well-grounded hypothesis that suppression of turbulence by sheared flow is a universal phenomenon in such fluids, and that it can be exploited to control transport of fluid constituents. Applications of this new knowledge will be developed.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668481
Funder
Australian Research Council
Funding Amount
$140,385.00
Summary
Time-resolved observation of highly transient events by a novel digital high-speed camera. Highly transient, that is, rapidly changing, events occur in nature and in almost every field of science and engineering. Knowledge and understanding of these processes is vital for the design of better and innovative machines, materials and instruments. Valuable insight into these processes can be gained if one can visualise them by means of high-speed photography. This application seeks the acquisition o ....Time-resolved observation of highly transient events by a novel digital high-speed camera. Highly transient, that is, rapidly changing, events occur in nature and in almost every field of science and engineering. Knowledge and understanding of these processes is vital for the design of better and innovative machines, materials and instruments. Valuable insight into these processes can be gained if one can visualise them by means of high-speed photography. This application seeks the acquisition of a novel and unique digital camera system that would allow one to observe rapidly occurring processes with unprecedented clarity. The availability of such a system would significantly strengthen cutting-edge research activities in various disciplines that would ultimately lead to the development of original and innovative products.Read moreRead less
Unravelling the neutron lifetime puzzle with lattice quantum chromodynamics. This project will perform supercomputer simulations to confront one of the outstanding puzzles of nuclear and particle physics, the neutron lifetime. New knowledge will be generated through the development of novel theoretical and numerical techniques to increase the precision of the leading theoretical inputs required to predict the neutron lifetime. The outcomes will provide crucial theoretical guidance into understan ....Unravelling the neutron lifetime puzzle with lattice quantum chromodynamics. This project will perform supercomputer simulations to confront one of the outstanding puzzles of nuclear and particle physics, the neutron lifetime. New knowledge will be generated through the development of novel theoretical and numerical techniques to increase the precision of the leading theoretical inputs required to predict the neutron lifetime. The outcomes will provide crucial theoretical guidance into understanding the neutron; helping to guide the next-generation neutron experiments, from particle physics to applications in advanced materials science. The results will have immediate benefit by resolving the neutron lifetime puzzle, while enabling Australian scientists to take a leadership role in this area of fundamental science.Read moreRead less
Multiple atomic photoionization in superstrong electromagnetic field. Correlation, or entanglement, of electrons in matter governs many important phenomena in nature, such as chemical reactions, superconductivity and ferromagnetism. However, it is the many-electron processes in atoms which allow the study of electron correlations most clearly. In this project we will investigate such a process of two-electron atomic photoionization by an intense laser pulse. We will combine advanced theoretical ....Multiple atomic photoionization in superstrong electromagnetic field. Correlation, or entanglement, of electrons in matter governs many important phenomena in nature, such as chemical reactions, superconductivity and ferromagnetism. However, it is the many-electron processes in atoms which allow the study of electron correlations most clearly. In this project we will investigate such a process of two-electron atomic photoionization by an intense laser pulse. We will combine advanced theoretical and experimental tools with the aim of understanding how the electron correlation interplays with the superstrong electromagnetic field. This will provide insight into fundamental processes of interaction of intense laser pulses with matter which are important in a wide range of applications.Read moreRead less
Multiple ionization of atoms and molecules in strong laser fields. Our research contributes to multidisciplinary efforts to unravel the
fundamental mechanisms that govern interaction of intense laser
radiation with matter. Understanding and accurate numerical modelling
of such preocesses have far-reaching implications for astrophysics,
plasma physics and controlled fusion, life and materials sciences. The
research project will further enhance our reputation in an area where
Australian the ....Multiple ionization of atoms and molecules in strong laser fields. Our research contributes to multidisciplinary efforts to unravel the
fundamental mechanisms that govern interaction of intense laser
radiation with matter. Understanding and accurate numerical modelling
of such preocesses have far-reaching implications for astrophysics,
plasma physics and controlled fusion, life and materials sciences. The
research project will further enhance our reputation in an area where
Australian theorists are preeminent, and the research training will
produce PhD graduates with a high-level ability in numerical modelling
using supercomputers. Such skills are essential in many defense,
information and nano-technology applications of national priority.
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Two-electron atomic photoionization in superstrong electromagnetic field. Correlation, or entanglement, of electrons in matter governs many important phenomena in nature, such as chemical reactions, superconductivity and ferromagnetism. However, it is the many-electron processes in atoms which allow the study of electron correlations most clearly. In this project we will investigate such a process of two-electron atomic photoionization by an intense laser pulse. We will combine advanced theoret ....Two-electron atomic photoionization in superstrong electromagnetic field. Correlation, or entanglement, of electrons in matter governs many important phenomena in nature, such as chemical reactions, superconductivity and ferromagnetism. However, it is the many-electron processes in atoms which allow the study of electron correlations most clearly. In this project we will investigate such a process of two-electron atomic photoionization by an intense laser pulse. We will combine advanced theoretical and experimental tools with the aim of understanding how the electron correlation interplays with the
superstrong electromagnetic field. This will provide insight into fundamental processes of interaction of intense laser pulses with matter which are important in a wide range of applications.
Read moreRead less
Atomic Ionization on the Attosecond Time Scale. Electrons emit light, carry electric current, and bind atoms together to form molecules. Insight into their atomic-scale motion is the key to understanding the functioning of biological systems, developing efficient sources of x-ray light, and speeding up electronics. Capturing this electron motion requires attosecond (one quintillionth of a second) time resolution. Our research aims to understand and accurately model fundamental atomic processes ....Atomic Ionization on the Attosecond Time Scale. Electrons emit light, carry electric current, and bind atoms together to form molecules. Insight into their atomic-scale motion is the key to understanding the functioning of biological systems, developing efficient sources of x-ray light, and speeding up electronics. Capturing this electron motion requires attosecond (one quintillionth of a second) time resolution. Our research aims to understand and accurately model fundamental atomic processes taking place on the attosecond time scale. This research project will further enhance our reputation in an area where Australian theorists are preeminent, and the research training will produce PhD graduates with the skills essential in a multitude of nano-technology applications. Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0238631
Funder
Australian Research Council
Funding Amount
$200,000.00
Summary
Ultra High Resolution Electron Recycling Spectrometer. Electron collisions with atoms and molecules provide enormous versatility through the transfer of large amounts of angular momentum and the ability to excite dipole forbidden states. However a lack of energy resolution severely restricts the processes that can be studied.
We propose to construct a unique, ultra-high resolution, electron recycling spectrometer using a radical new design. State-of-the-art spectroscopic studies of ato ....Ultra High Resolution Electron Recycling Spectrometer. Electron collisions with atoms and molecules provide enormous versatility through the transfer of large amounts of angular momentum and the ability to excite dipole forbidden states. However a lack of energy resolution severely restricts the processes that can be studied.
We propose to construct a unique, ultra-high resolution, electron recycling spectrometer using a radical new design. State-of-the-art spectroscopic studies of atoms and molecules will be enabled, including the dynamics of near-threshold processes, the formation of transient states and the examination of processes such as rotational excitation and dissociative attachment in molecules - important in a number of gas-discharge based devices.
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Investigating Near-Threshold Atomic and Molecular Collision Processes with Multiparameter Detection Techniques. We are proposing to perform state-of-the-art, electron impact excitation and ionization measurements on a range of atoms and molecules. The combination of new detector technology and innovative experimental design will enable measurements of near-threshold excitation and ionization in a number of important atomic and molecular systems. The measurements will have implications for the ....Investigating Near-Threshold Atomic and Molecular Collision Processes with Multiparameter Detection Techniques. We are proposing to perform state-of-the-art, electron impact excitation and ionization measurements on a range of atoms and molecules. The combination of new detector technology and innovative experimental design will enable measurements of near-threshold excitation and ionization in a number of important atomic and molecular systems. The measurements will have implications for the further development of atomic scattering theory, particularly the role of electron-electron correlations, and provide much needed absolute scattering information on the excitation of molecules which are of relevance to our atmosphere and various technological devices.Read moreRead less
Positronic Atoms - A Search for Positron Bound States. An experimental verification of positron bound states will solve a long standing problem in positron physics. A clear understanding of positron binding and the underlying mechanisms will open a new era in low-energy positron-atom/molecular physics, leading the way for breakthrough sciences. For instance, a positron bound state should enhance the annihilation rate between the positron and target valence electron. Positron annihilation, to pro ....Positronic Atoms - A Search for Positron Bound States. An experimental verification of positron bound states will solve a long standing problem in positron physics. A clear understanding of positron binding and the underlying mechanisms will open a new era in low-energy positron-atom/molecular physics, leading the way for breakthrough sciences. For instance, a positron bound state should enhance the annihilation rate between the positron and target valence electron. Positron annihilation, to produce two gamma rays, is a key process in both materials research (e.g. as already heavily employed in defect detection) and bio-medical treatments (e.g. the Positron Emission Tomography, or PET).Read moreRead less