Australian Institute of Physics
South Australian Branch
Announcing an AIP-SA Members'Lecture
AIP Student NightTuesday 30th June 1998 at 7.30pm in the
KERR-GRANT lecture theatre
Physics Building, The University of Adelaide
Superelastic Electron Scattering
Superelastic scattering experiments have been performed on potassium atoms. A laser beam is used to excite potassium atoms from the ground state to an excited state. Electrons are scattered from these excited atoms and those electrons which gain energy in the collision are detected. These superelastic electrons carry information about the orientation and alignment parameters which describe the scattering process. These parameters can then be compared to theoretical models.
Thin Polymeric Film Adhesives
University of South Australia
Pressure Sensitive Adhesives (PSA's) are a form of contact adhesive produced by a thin layer of viscoelastic polymer fluid. The most familiar example is ordinary sticky-tape. In contrast to elastic, "solid" body adhesion, PSA adhesion relies almost entirely on the dissipation of large amounts of energy in deforming the fluid dynamically. This simple picture is complicated, however, by many secondary effects including de-wetting, cavitation and bridging fibrillation. These specific processes are being examined when two rigid substrates bound together via a polymer fluid are separated under different conditions.
Studying the Highest Energy Particles in Nature
University of Adelaide
In 1991 a subatomic particle with an energy in excess of 50 Joules (3x1020 eV) was detected arriving from space. This is the most energetic particle ever observed. However despite over thirty years of observations we still do not know how such energetic particles are created or where they originate from. The High Resolution Fly's Eye is is a new detector with a collection area of 3000 km2 which seeks to try to resolve these long standing questions. This talk will cover the motivation and discuss my work on this project.
Everyone is welcome at a supper provided by the AIP after the meeting.