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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
Darleane C. Hoffman, transuranium element pioneer, dies at age 98
Hoffman
Nuclear chemist Darleane D. Hoffman, who was renowned for her research on transuranium elements that advanced the understanding of nuclear fission, died on September 4 at her home in Menlo Park, Calif. She was 98.
Iowa origins: Hoffman was born on November 8, 1926, in Terril, Ia. She attended Iowa State University, where she earned a bachelor’s degree in chemistry in 1948 and a doctorate in physical (or nuclear) chemistry in 1951. She then began working as a chemist at Oak Ridge National Laboratory.
Los Alamos research: In 1953, Hoffman began a research position at Los Alamos National Laboratory, where she conducted pioneering work on spontaneous fission. She served as the lab’s first female division leader in charge of the Chemistry and Nuclear Chemistry Division.
M.H. Anderson, J.G. Murphy, M.E. Sawan, I.N. Sviatoslavsky, M.L. Corradini, S. Malang
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 810-814
Chamber Technology | doi.org/10.13182/FST01-A11963339
Articles are hosted by Taylor and Francis Online.
In order to determine whether the EVOLVE fusion blanket design is viable, thermal-hydraulic analyses were performed on the outboard liquid lithium blanket trays. Various methodologies were employed to determine the vapor fraction distribution within these liquid metal trays. Detailed analysis of the vapor fraction is required for understanding of neutron streaming and for heat removal issues involving the liquid lithium trays. The effect of the magnetic field on the liquid lithium pool is still not fully understood and can strongly influence the potential mode of heat removal. Vapor fractions may be greater than 50% for negligible magnetic coupling between the system and the liquid lithium pool. If the magnetic field is coupled to the liquid lithium pool smaller vapor fractions are predicted, ranging up to 12%. Experiments are proposed to determine the magnitude of this coupling and ultimately the vapor fraction distribution of the liquid lithium pool.
