Jens Oddershede

Mel Levy (New Orleans, Louisiana) Jens Oddershede (Odense, Denmark) Mark Ratner (Evanston, Illinois) Dennis R. Salahub (Montreal, Canada) Harel Weinstein (New York, New York) Robert E. Wyatt (Austin, Texas) Tokio Yamabe (Kyoto, Japan)... 

Jens Oddershede was appointed Professor of Chemistry at Odense University in 1988, and remains so. In 1992, he supplemented his scientific career with administrative tasks when he became Dean of Science, which, however, did not keep him from being active in Science. In 2001, he was elected Rector (President) of the University of Southern Denmark, a position which he continues to serve. However, he is still an active participant in theoretical chemistry and presently among the most cited scientists at the University of Southern Denmark. 

When Jens Oddershede was elected a Fellow of the American Physical Society in 1993, the citation read For contribution to the theory, computation, and understanding of molecular response properties, especially through the elucidation implementation of the Polarization Propagator formalism. Although written more than a decade ago, it is still true today. The common thread that has run through Jens work for the past score of years is development of theoretical methods for studying the response properties of molecules. His primary interest has been in the development and applications of polarization propagator methods for direct calculation of electronic spectra, radiative lifetime and linear and non-linear response properties such as dynamical dipole polarizabilities and... 

Jens Oddershede is, a member of the advisory editorial boards of Advances in Quantum Chemistry and Theoretical Chemistry Accounts, and has served on the boards of Theoretica Chemica Acta and The International Journal of Quantum Chemistry. 

Over the years, Jens Oddershede has written extensively on various aspects of energy deposition by swift ions in material targets. In many cases, he has been concerned with the orientational effects of target molecules with respect to the projectile beam direction, and has explained these differences in the context of the relevant oscillator strength distribution of the target [1-8]. It is in the spirit of Jens work that we carried out this study of the orientational aspects of the energy deposition by swift protons in water, and we report them now in celebration of his the-third-times-twentieth birthday. 

Finally, Jens Oddershede has contributed to many branches of atomic and molecular theory, and all of us are proud to have been associated with him over the years. Two of us (RCT and JRS) have been privileged to be called et al. ... 

A quarter of a century ago the author stepped into Jens Oddershede s office and asked for support on a problem involving computation with atomic wave functions in connection with a new theoretical scheme to treat stopping of charged particles at intermediate speed. This visit resulted in two related publications, two joint papers and a number of follow-up studies by Jens and several others. In 1989 a Sanibel Symposium was devoted to aspects of the penetration of charged particles through matter, and since then, quite a few quantum chemists have joined the community of theoreticians dealing with particle penetration. 

It is a great privilege to contribute to this special issue dedicated to the 60th birthday of Prof. Jens Oddershede. This brings friendly, and intellectually stimulating, memories to one of us (SC) who had the opportunity to visit Jens and his Odense. This work has been partially supported by CNPq and FAPESP (Brazil). 

We have employed the second-order polarization propagator approximation (SOPPA) in this study, a method which was mainly developed by Jens Oddershede and his co-workers [3,4,20,51-56]. Barone et al. [32] have recently shown that SOPPA reproduces the vicinal F-F couplings reasonably well in 1,2-difluoroethene. 

The calculation of polarizabilities is one of the research topics Jens Oddershede is working on since the beginning of his career [1-21], Already in one of his first papers he discussed the dipole polarizability of HF [1] and returned to it several times later [3,6,13,14,18]. Therefore, we decided to contribute to this special issue with a study of static dipole and quadrupole polarizabilities which are still one of the most studied electromagnetic properties. 

The role of quadmpole polarizabilities is less pronounced. Jens Oddershede, e.g., has studied the quadmpole polarizability of N2 [10]. Furthermore, there are studies which point out the need for calculations of quadmpole polarizabilities, e.g., for the interpretation of spectra obtained by surface-enhanced Raman spectroscopy [42,43]. Generally the interest in multipole polarizabilities increases due to new experimental data. We decided, therefore, to also study how different linear response theory methods perform in the calculation of quadmpole polarizabilities. 

Few people have the ability to influence the field of their research, and Jens Oddershede is one of them. As a quantum chemist, he began in the 1970s to tackle fundamental problems within the response theory that later allowed him to implement it in the field of energy deposition. It wiU take a big part of this article to summarize all his contributions. It is our intention to celebrate his 60th birthday with a review of the consequences of his ideas in a concise way. Tillykke med fddselsdagen, Jens... 

Jens Oddershede s ideas on stopping power theory and their impact and consequences have been briefly reviewed. We have centered our analysis on the relevance of the orbital implementation of the kinetic theory (KT) of stopping and the Bethe and Thomas-Reiche-Khun sum rules, since they have influenced profoundly the development of our research along these lines. 

This paper is dedicated to professor Jens Oddershede on the occasion of his 60th birthday. 

I would like to dedicate this paper to Jens Oddershede on his 60th birthday. I would like to thank Magdalena Pecul for suggesting an additional s -exponent in the basis set used for the calculation of the shielding polarizability of the xenon atom. 

I want to express my great gratitude to my teacher Jens Oddershede who was and still is an important source of inspiration. The first project he assigned to me was the calculation of the rotational g factor of NH3 [22]. I decided therefore to close... 

It is appropriate that this volume is named Jens Oddershede - Adventurer in Quantum Chemistry, as Jens has always viewed his sojourn through quantum chemistry as an adventure rather than a job. His enthusiasm for, and dedication to, good and interesting science has been an inspiration to all of us who have worked together with him over the years. 

Jens Oddershede grew up on the country side in the province of Thy, northwestern Denmark. As the oldest son it would have been natural for him to overtake/inherit the family farm in Kastrup, however, Jens preferred to do chemistry experiments in the attic rather than participating in the farm life (by all accounts, it was only by extraordinary luck that the house survived). Therefore, after having completed... 

Jens Oddershede (Odense, Denmark) Josef Paldus (Waterloo, Canada)... 

Paul Jorgensen and Jens Oddershede, Problems in Quantum Chemistry, Addison-Wesley, Reading, MA, 1983. 

Jens Oddershede. Propagator methods. Adv. Chem. Phys., 69 201-239, 1987. 

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