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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.
Hiromasa Takeno, Yasuyoshi Yasaka
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 386-389
Poster Presentations | doi.org/10.13182/FST01-A11963487
Articles are hosted by Taylor and Francis Online.
Particle discrimination and deceleration are studied with employing experimental devices which simulate direct energy converters used for D–3He reactor. A Cusp-DEC simulator with a slanted cusp field is constructed, and the preparative numerical simulation about it shows the better discrimination is expected for ions with a small pitch angle. Experimental results in a TWDEC simulator are presented. Due to the measurements of energy distribution, the effectiveness of spatially varied wavelength structure is demonstrated. The simple 1-D orbit calculation shows that the efficiency of the same extent as that of the 2-D numerical simulation would be achieved in the experimental device.
