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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.”
Kalimullah, K. S. Ram, G. Srikantiah
Nuclear Science and Engineering | Volume 49 | Number 3 | November 1972 | Pages 376-384
Technical Note | doi.org/10.13182/NSE72-A22550
Articles are hosted by Taylor and Francis Online.
A closed form expression for the Laplace transform of lethargy-dependent neutron age τ ⊥(u) from zero lethargy to any lethargy u in a slab lattice of two materials, which are characterized by constant cross-sections, is obtained by solving Fermi age equation with a plane neutron source at the midplane of one of the slabs of an infinite lattice. Due to complexity of the Laplace transform obtained for τ⊥(u), numerical inversion is carried out to obtain (a) neutron age from 2 MeV to indium resonance energy 1.45 eV in a number of Al-H2O lattices ranging from pure aluminum to pure water and (b) neutron age as a function of lethargy in 5-5 cm AI-H2O lattice. The results obtained are in satisfactory agreement with the existing literature in those few cases in which experimental or Monte Carlo values are available. At the same Al-H2O volume ratio, neutron age is found to increase or decrease with increasing plate thickness depending on the neutron source location in aluminum or water respectively. Furthermore, everything remaining the same neutron age is smaller with the source in water than in aluminum.
