For his leadership in separations science and technology; for improving nuclear fuel recycling and waste removal; and for leading the development process that was instrumental in the cleanup of waste at the Savannah River Site.
For his innovation in the production and application of medical isotopes; for advancing the separation and purification of actinides and heavy elements; and for his leadership in the use of alpha emitters to save the lives of cancer patients.
For his broad scientific contributions and international reputation in aqueous chemistry and geochemistry; for his research into the structure, dynamics, and reactions at fluid–solid interfaces; and for his leadership and service to ORNL and the international scientific community.
For innovative and fundamental contributions to the understanding of the interactions and transport of electrons in gases and liquids, negative ion processes, the interfacing of the gaseous and condensed phases of matter, and the use of fundamental knowledge in the development of gaseous dielectrics, radiation detectors, and pulsed power
For fundamental studies of the microscopic structure of magnetic materials using neutron scattering methods, and for contributing to the development of neutron polarization analysis as a productive scientific technique.
For fundamental studies in radiation physics, radiation dosimetry, and surface physics and for pioneering theoretical work on collective electron modes, surface electromagnetic waves in solids, and elucidation of the interaction of charged particles with matter.
For advances in neutron and gamma-ray dosimetry, the transport of electricity through gases, and the development of laser-based one-atom detection with applications in nuclear physics, solar neutrino research, and oceanic, geologic, and environmental research
For research on the processes involved in the induction of mutations, elucidating the roles and sequences of DNA repair and replication in converting radiation or chemical damage into mutations, and for contributions to the understanding of biological control mechanisms at the cellular level
For work at the forefront of neutron scattering research, for early work on the fundamentals of scattering from ferromagnetic materials, and for significant contributions to understanding the complex magnetic structures and properties of elements and compounds such as the heavy rare-earth metals
For work in magnetic resonance, including the early evaluation of spins and moments of radioactive nuclei and experiments in nuclear quadrupole spectroscopy, and for the application of electron spin resonance to study free radicals trapped in solids and short-lived radicals in pyrolyzed fluids