Journal of Physical Chemistry & Biophysics
Open Access

John R. Sabin

Biography

John Rogers Sabin currently works at the Department of Physics, Department of Physics and Chemistry, University of Southern Denmark, Odense, Denmark. John does research in Theoretical Chemistry, Molecular Physics and Atomic, Molecular and Optical Physics. Their most recent publication is 'Lindhard's polarization parameter and atomic sum rules in the local plasma approximation: a case for excited states'.

Research Interest

John R. Sabin principal research interest is the study energy deposition, or stopping power, for swift ions in biomolecules. The attack is two pronged. In the first case, we use a fully quantum mechanical dynamics to study ion/(bio)molecule collisions and calculate collision, fragmentation, charge exchange, and other cross sections.  In a similar vein, we study the mean excitation energy of molecules and clusters, as the mean excitation energy is the quantity that best describes the ability of a molecule to absorb energy from a projectile ion.  The molecular mean excitation energies are obtained by direct calculation and integration of the appropriate generalized oscillator strengths (GOS\'s) using the polarization propagator formalism. In principle, the scheme provides an accurate method to calculate stopping for individual molecules, which can be extended to clusters by application of a Bragg-like combination rule.

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