Rufus Ritchie, A Gentleman and a Scholar

John R. Sabin is Professor of Physics and Chemistry Emeritus at the University of Florida, and Adjungeret Professor at the University of Southern Denmark. He received the AB degree from Williams College in 1962 and the PhD from the University of New Hampshire in 1966. Thereafter he was a postdoctoral student at Uppsala University and at Northwestern University. He was Assistant Professor at the University of Missouri for three years (1968-1971) and then came to the University of Florida where he has been since.Sabin’s research interest is in the theoretical description of the interaction of fast charged baryon projectiles with atomic and molecular targets, both as neutrals and ions. In this work, he uses molecular quantum mechanics to describe such interactions. In particular, he is interested in the mechanism of absorption of the projectile’s mechanical energy by the target, where it is mostly converted to electronic energy, which is measured by the target’s mean excitation energy. He has written some 250 articles in this and related fields.Sabin is editor of Advances in Quantum Chemistry and has been editor of the International Journal of Quantum Chemistry. He has edited some 90 volumes and proceedings. Jens Oddershede is Professor of Chemistry Emeritus at University of Southern Denmark and Adjunct Professor of Chemistry at University of Florida. He graduated from Aarhus University in 1970 with a degree in chemistry and physics with a thesis in quantum chemistry directed by Professor Jan Linderberg. He was awarded the dr. scient. degree from Aarhus University in 1978 and Dr. Science h.c. from University of Florida in 2014. Oddershede was a postdoctoral fellow 1971-73 at University of Utah (Frank E. Harris) and came to University of Southern Denmark in 1977 where he has been since. He was Dean of Science 1992-2001 and University President 2001-2014 at the same university. His research interest focusses on theoretical molecular physics and quantum chemistry, in particular the development and applications of methods (polarization propagator methods) for direct calculation of electronic spectra and properties related to spectra. Also the calculation of stopping powers and shell corrections as well as mean excitation energies and other dipole oscillator strength sum rules are among the current research interests.

• 1. Inelastic electron excitation of transition metal atoms and Kondo resonancesFernando Flores, Guillermo Chiappe, Enrique V. Anda and Edith C. Goldberg2. Correlated model atom in a time-dependent external field: Sign effect in the energy shiftIstvan Nagy and Inigo Aldazabal3. Dipole-bound states contribution to the formation of anionic carbonitriles in the ISM: Calculations using multireference methods for C3N−Stanka V. Jerosimić, Milan Z. Milovanović, Roland Wester and Franco A. Gianturco4. Energy loss of charged particles in collision with atoms and surfacesKaroly Tokesi5. Bound and continuum state contributions to dipole oscillator strength sum rules: Total and orbital mean excitation energies for cations of C, F, Si, and ClRemigio Cabrera Trujillo, Stephan P.A. Sauer, John R. Sabin and Jens Oddershede6. Collective electronic excitations on the MgB2(0001) surfacesVyacheslav M. Silkin, Evgenii V. Chulkov and Pedro M. Echenique7. Electronic and crystal structure of the Pt(111)-(2 × 2)-K and Cu(111)-(2 × 2)-K systemsYury M. Koroteev and Evgenii V. Chulkov8. Electron-phonon interaction on the (110) surface of Ag and CuIrina Yu. Sklyadneva, Rolf Heid, Klaus-Peter Bohnen and Evgenii V. Chulkov9. Calculation of mean excitation energiesStephan P.A. Sauer, John R. Sabin and Jens Oddershede10. Studies of threshold effects in the interaction of protons, electrons, and positrons in matter using dielectric modelsClaudio D. Archubi and Néstor R. Arista11. Plasmon excitation by charged particles in solids, surfaces, and nanostructures: Following the trail of R.H. RitchieNestor R. Arista, Juana L. Gervasoni, Silvina Segui, Isidro Villo-Perez and Raul O. Barrachina12. Classical theory of hyperthermal gas scattering from surfacesWayne W. Hayes and Joseph R. Manson