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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.
Sukesh Aghara, chair of the Nuclear Engineering Department Heads Organization, noted in an email to NEDHO members and others that “Gil was a relentless advocate for nuclear energy and a deeply respected member of our professional community. He was also a kind and generous friend—and one of the reasons I ended up at UMass Lowell. He served the university with great dedication. . . . Within NEDHO, Gil was a steady presence and served for many years as our treasurer. His contributions to nuclear engineering education and to this community will be dearly missed.”
G. S. Sidhu, W. E. Farley, L. F. Hansen, T. Komoto, B. Pohl, C. Wong
Nuclear Science and Engineering | Volume 66 | Number 3 | June 1978 | Pages 428-433
Technical Note | doi.org/10.13182/NSE78-A27226
Articles are hosted by Taylor and Francis Online.
We have remeasured the spectra for the neutron and secondary gamma rays due to a 14-MeV neutron source by replacing liquid nitrogen, used in our earlier work, with liquid air (LA) as the transport medium. The deuterium-tritium neutron source was located at the center of the sphere (129.3-cm radius) of LA (20.7 at. % O2 remainder N2). Scintillation detectors were located at a distance from the sphere. Using time-of-flight techniques, we obtained approximate neutron energy information by measuring the time-of-arrival of neutrons at the detectors. We also measured, in a 60-ns time window before the arrival of 14-MeV neutrons, the gamma-ray spectrum that results from nonelastic neutron interactions in LA. To compare the measured spectra with code calculations, we folded the detector efficiencies and experimental parameters into the calculated output of TARTNP, the coupled neutron-photon Monte Carlo transport code of Lawrence Livermore Laboratory. The calculated spectra for gamma rays and neutrons and the calculated radiation doses show good agreement with the measurements. The results of this work provide a benchmark point on a radiation dose versus range-in-air curve obtained by the TARTNP calculations.
