A5020656841- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Mass Spectrometry Techniques and Applications
- Muon and positron interactions and applications
- Atmospheric Ozone and Climate
- Plasma Diagnostics and Applications
- Laser-induced spectroscopy and plasma
- Spectroscopy and Laser Applications
- Ionosphere and magnetosphere dynamics
- Astro and Planetary Science
- Photochemistry and Electron Transfer Studies
- Inorganic Fluorides and Related Compounds
- Photocathodes and Microchannel Plates
- Molecular Junctions and Nanostructures
- Spectroscopy and Quantum Chemical Studies
- Planetary Science and Exploration
- Atmospheric chemistry and aerosols
- Radiation Therapy and Dosimetry
- Plasma Applications and Diagnostics
- Molecular Spectroscopy and Structure
- Particle accelerators and beam dynamics
- Catalytic Processes in Materials Science
- Electrohydrodynamics and Fluid Dynamics
Flinders University
2015-2024
UCSI University
2020-2023
The University of Adelaide
2018-2023
Institute of Physics Belgrade
2020-2021
University of Belgrade
2020-2021
Australian National University
1990-2021
James Cook University
2014-2021
Townsville Hospital
2021
Drake University
2008-2020
Tsinghua University
2019
LXCat is an open‐access platform ( www.lxcat.net ) for curating data needed modeling the electron and ion components of technological plasmas. The types presently supported on are scattering cross sections swarm/transport parameters, ion‐neutral interaction potentials, optical oscillator strengths. Twenty‐four databases contributed by different groups around world can be accessed LXCat. New contributors welcome; database retain ownership responsible contents maintenance individual databases....
Electron scattering cross sections for pyridine in the energy range 0–100 eV, which we previously measured or calculated, have been critically compiled and complemented here with new measurements of electron loss spectra double differential ionization sections. Experimental techniques employed this study include a linear transmission apparatus reaction microscope system. To fulfill transport model requirements, theoretical data recalculated within our independent atom screening corrected...
Electron-atom and electron-molecule collisional cross sections are needed in the modeling understanding of phenomena ranging from planetary atmosphere science to industrial applications plasmas. This article reviews Born approximation phenomenological scaling approaches that provide accurate excitation over a range electron impact energies. The methods illustrated for variety atomic molecular systems.
Electrons from the Sun, often accelerated by magnetospheric processes, produce low-density plasmas in upper atmospheres of planets and their satellites. The secondary electrons can further ionization, dissociation excitation, leading to enhancement chemical reactions light emission. Similar processes are driven photoelectrons produced sunlight during daytime. Sunlight solar drive same comets. Thus for both understanding planetary predicting emissions comparison with remote observations it is...
To incorporate the effects of low energy electrons and positrons into radiation interaction models.The simulation method proposed here was based on experimental theoretical cross section data loss spectra we have previously derived. After a summary main techniques used to obtain reliable input data, basis Low Energy Particle Track Simulation (LEPTS) procedure established. The programme is specifically designed describe electron positron interactions below 10 keV, down thermal energies.Single...
Collisions with electrons from several sources are common throughout planetary atmospheres. While in most circumstances direct electron impact is less significant than solar radiation, collisions have a major influence on the chemistry driven by both photon and particle impact. This review addresses atmospheres, emphasis cases where drives, enhances, or otherwise interacts chemical processes. Understanding of atmospheric processes typically involves computational simulation based theory,...
We review a selection of recent experimental and theoretical cross section results for electron scattering from range biofuels (methanol, ethanol), biomolecules (water, tetrahydrofuran, pyrimidine, tetrahydrofurfuryl alcohol para-benzoquinone) molecular fragments that are formed the action atmospheric-pressure plasmas on biomass (phenol, furfural). Where possible, implications those sections, simulating transport electrons through such species under influence an applied external electric...
We present a compilation of recommended positron–molecule cross sections for range scattering processes including elastic scattering, vibrational excitation, discrete electronic-state positronium formation, ionization, and also the grand total section. Where possible, in particular possible application positron transport simulations given molecule, we try list data energies 0.1–1000 eV although practice actual energy is highly target–molecule process specific. Aside from being relevant to...
Differential cross sections for the electron-impact excitation of first ten electronic states ${\mathrm{N}}_{2}$ have been determined at five incident energies ranging from 15 to 50 eV. These differential were obtained scattering range 10\ifmmode^\circ\else\textdegree\fi{}--90\ifmmode^\circ\else\textdegree\fi{} by analyzing electron-energy-loss spectra in a number fixed angles within that range. The present study represents comprehensive remeasurement earlier work Cartwright and co-workers...
The authors report new differential cross section measurements (E0=1.5-50 eV) and coupled channel optical model calculations for elastic scattering of electrons from helium. experimental results, a crossed electron-atomic beam apparatus are analysed via complex phaseshift technique with the derived phaseshifts, their associated errors, then being used to derive total elastic, reaction, momentum transfer grand sections, respective in mathematically rigorous manner. Further, applied...
We report results of total cross-section measurements for positron and electron scattering from the chemically biologically important molecule tetrahydrofuran. believe this is first time such data have been reported in literature. The were conducted over energy range 0.1–20.0 eV, with cross section being found to be strongly peaked at lower energies. was 2–21 section's main feature a broad shape resonance peak ∼7.5 eV.
In this paper, we report on total electron tetrahydrofuran $({\text{C}}_{4}{\text{H}}_{8}\text{O})$ scattering cross-section measurements for energies in the range from 50 to 5000 eV with experimental errors of about 5%. addition, integral elastic and inelastic cross sections have been calculated over a broad energy $(1--10\text{ }000\text{ }\text{eV})$, an optical potential method assuming screening-corrected independent atom representation. Partial ionization also obtained by combining...
We report on recent cross section results for positron scattering from molecular oxygen (O2). Total sections (TCSs) were measured with a spectrometer in the energy range 0.1 to 50 eV and an resolution of beam ∼0.25 eV. In addition, TCSs as well elastic inelastic integral computed within independent atom model screening corrected additivity rule approach, both dipole plus quadrupole polarization potentials, between 1 1000 eV impact energy. An overall fair level accord is found experimental...
We present theoretical elastic and electronic excitation cross sections experimental for electron collisions with pyrimidine. use the R-matrix method to determine integral differential inelastic energies up 15 eV. The have been determined in 15–50 eV impact energy range. Typically, there is quite reasonable agreement between sections. Calculated agree very well prior results.
In this paper, an apparatus for measuring electron-scattering cross sections while applying a strong axial magnetic field is described. The first original experiment performed with setup the measurement of total pyrimidine (1,3-diazine), which are presented incident electron energy range 8--500 eV. Generally good agreement earlier theoretical predictions found after accounting angular acceptance (angular resolution forward scattering) apparatus.
Cross-section data for electron impact induced ionization of bio-molecules are important modelling the deposition energy within a biological medium and gaining knowledge driven processes at molecular level. Triply differential cross sections have been measured outer valence 7b2 10a1 orbitals pyrimidine, using (e, 2e) technique. The measurements performed with coplanar asymmetric kinematics, an incident 250 eV ejected 20 eV, scattered angles −5°, −10°, −15°. angular range encompasses both...
We present total, elastic, and inelastic cross sections for positron electron scattering from tetrahydrofuran (THF) in the energy range between 1 5000 eV. Total (TCS), positronium formation sections, summed integral (ICS) electronic excitations direct ionization, as well elastic differential (DCS) at selected incident energies, have been measured collisions with THF. The beam used to carry out these experiments had an resolution 40–100 meV (full-width half-maximum). also TCS results THF...
We present in this study a self-consistent set of scattering cross sections for positron collisions with water molecules, the energy range 0.1–10 000 eV, prime motivation being to provide data modelling purposes. The structure database is based on new model potential calculation, including interference terms, which provides differential and integral elastic as well inelastic molecules over whole considered here. Experimental theoretical available literature have been integrated into after...
We report integral cross sections (ICSs) for electron impact excitation of the A 3Σ+u, B 3Πg, W 3Δu, B' 3Σ-u, a' 1Σ-u, a 1Πg, ω1Δu, C 3Πu, E 3Σ+g and a'' 1Σ+g electronic states N2. The present data, each state, were derived at five incident energies in range 15-50 eV, from earlier crossed-beam differential section (DCS) measurements our group. This was facilitated by using molecular phase shift analysis technique to extrapolate measured DCSs 0° 180°, before performing integration....