Biomedical Engineering Reference
In-Depth Information
role. The exception to this last statement was at very low positron impact energies,
where there was clear evidence for the important role being played by the dipole
moment on the scattering dynamics.
In hindsight, perhaps this effect of the dipole polarisability on the value of the
TCSs should not be considered too surprising. This follows as the target dipole
polarisabiltiy is in some sense a measure of the spatial extent of the target molecular
charge cloud, so it makes intuitive sense that the larger is this electron charge
distribution the more likely an incident positron will interact with it in some
fashion.
Acknowledgements
This work was supported under a Memorandum of Understanding between
the University of Trento and the Flinders University node of the ARC Centre for Antimatter-Matter
Studies. MJB thanks Flinders University for his Outside Studies Programme (OSP) support, while
LC thanks the Department of Physics, University of Trento, for financial support.
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