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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Remembering ANS member Gil Brown
Brown
The nuclear community is mourning the loss of Gilbert Brown, who passed away on July 11 at the age of 77 following a battle with cancer.
Brown, an American Nuclear Society Fellow and an ANS member for nearly 50 years, joined the faculty at Lowell Technological Institute—now the University of Massachusetts–Lowell—in 1973 and remained there for the rest of his career. He eventually became director of the UMass Lowell nuclear engineering program. After his retirement, he remained an emeritus professor at the university.
Mark Goldsmith
Nuclear Science and Engineering | Volume 25 | Number 3 | July 1966 | Pages 236-241
Technical Paper | doi.org/10.13182/NSE66-A17830
Articles are hosted by Taylor and Francis Online.
The effects of spin polarization on the slowing down of neutrons in water is investigated. Spin-dependent scattering cross sections are derived from a combination of resonance parameters, experimental phase shifts, and optical model calculations. It is shown that the effect of polarization on the age of neutrons slowing down from an unpolarized plane source in an infinite moderator may be rigorously obtained from the P-1 approximation to the transport equation. One finds that the age of fission neutrons slowing down in water would be decreased by 0.8% by polarizing collisions with oxygen below 2.6 MeV were it not for depolarizing collisions with hydrogen that reduce this figure to 0.2%.
