The effects of fluorine ion bombardment on the channel transport properties of AlGaN /GaN heterostructures have been investigated. Ion bombardment of the heterostructure was carried out within a CF4 plasma in a reactive ion etching system at various self-bias voltages. Hall mobility and sheet electron concentration for the two-dimensional electron gas showed strong dependence on bombardment dur...

The influence of ion bombardment on the structure of the silicon lattice has been the subject of numerous investigations. The various effects induced by low energy ion bombardment in the outer layers of a solid lattice damage, ion implantation, surface roughness, sputtering and surface state changes are reflected in changes of the complex dielectric constant Z, which can be measured by means of...

Ion bombardment of plant and bacterial cellular material has recently been used as a tool for the transfer of exogenous DNA macromolecules into the cell interior region. The precise mechanism that leads to the transfer of macromolecules through the cell envelope is not yet clear, however it has been observed that the ion bombardment is accompanied by the formation of “microcraters” on the cell ...

Molecular dynamics simulations have been performed to gain microscopic insight into the factors that lead to molecular ejection after ion bombardment of an organic overlayer on a metal surface. The specific system modeled is benzene (C6H6) adsorbed on Ag{111}. The kinetic energy and angular distributions of C6H6 molecules obtained from the simulations match well with the experimentally measured...

The destruction of solid glycine under irradiation with 2 keV electrons has been investigated by means of IR spectroscopy. Destruction cross sections, radiolysis yields, and half-life doses were determined for samples at 20, 40, 90, and 300 K. The thickness of the irradiated samples was kept below the estimated penetration depth of the electrons. No significant differences were obtained in the ...

Saturn • Determine the global configuration and dynamics of hot plasma in the magnetosphere of Saturn through energetic neutral particle imaging of ring current, radiation belts, and neutral clouds. • Study the sources of plasmas and energetic ions through in situ measurements of energetic ion composition, spectra, charge state, and angular distributions. • Search for, monitor, and analyze magn...

We apply the Ionization Region Model (IRM) and Orsay Boltzmann equation for ELectrons coupled with eXcited states kinetics (OBELIX) model to study electron of a high power impulse magnetron sputtering (HiPIMS) discharge. In IRM bulk (cold) electrons are assumed exhibit Maxwellian energy distribution secondary (hot) electrons, emitted from target surface upon ion bombardment, treated as tail, wh...