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Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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Remembering Charles E. Till
Charles E. Till
Charles E. Till, an ANS member since 1963 and Fellow since 1987, passed away on March 22 at the age of 89. He earned bachelor’s and master’s degrees from the University of Saskatchewan and a Ph.D. in nuclear engineering from Imperial College, University of London. Till initially worked for the Civilian Atomic Power Department of the Canadian General Electric Company, where he was the physicist in charge of the startup of the first prototype CANDU reactor in Canada.
Till joined Argonne National Laboratory in 1963 in the Applied Physics Division, where he worked as an experimentalist in the Fast Critical Experiments program. He then moved to additional positions of increasing responsibility, becoming division director in 1973. Under his leadership, the Applied Physics Division established itself as one of the elite reactor physics organizations in the world. Both the experimental (critical experiments and nuclear data measurements) and nuclear analysis methods work were internationally recognized. Till led Argonne’s participation in the International Nuclear Fuel Cycle Evaluation (INFCE), and he was the lead U.S. delegate to INFCE Working Group 5, Fast Breeders.
Claude Deutsch, Patrice Fromy, Xavier Garbet, Gilles Maynard
Fusion Science and Technology | Volume 13 | Number 2 | February 1988 | Pages 362-374
Technical Paper | Heavy-Ion Fusion | doi.org/10.13182/FST88-A25111
Articles are hosted by Taylor and Francis Online.
A few basic atomic problems are associated with the stopping of nonrelativistic pointlike ions in dense and hot matter. First, the free electron contribution is considered, taken in random phase approximation with an exact dynamic dielectric function, valid at any temperature. Stopping power and straggling can thus be obtained for any projectile velocity. The temperature dependence is of special relevance for a projectile energy <5 MeV/amu. The mean excitation energies of bound electrons are then considered and found to be smaller than in cold matter. The projectile effective charge in hot targets is also investigated. Experiments involving a heavy-ion beam produced by a standard accelerator and interacting with an independently produced coronal plasma are described.