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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.”
Christopher E. Hamilton, Nickolaus A. Smith, Jon R. Schoonover, Kimberly A. Defriend Obrey, Nicholas Bazin, Tina Jewell
Fusion Science and Technology | Volume 63 | Number 2 | March-April 2013 | Pages 301-304
Technical Paper | Selected papers from 20th Target Fabrication Meeting, May 20-24, 2012, Santa Fe, NM, Guest Editor: Robert C. Cook | doi.org/10.13182/FST13-A16354
Articles are hosted by Taylor and Francis Online.
Silica aerogel, an extremely low-density and high-surface-area material, is a vital component of many target designs for inertial confinement fusion and high-energy-density physics experiments. Silica aerogel utilized in targets is found in a variety of densities and configurations. Material properties must be well characterized to minimize uncertainties in experimental data. In particular, density must be accurately known to predict shock velocity and timing of diagnostics. One potentially problematic attribute of silica is its hygroscopic nature. Here we describe adsorption of ambient moisture by silica aerogel, based on its density and processing parameters. Quick and simple methods of characterizing water uptake are needed to provide confidence in aerogel components. We find that aerogel manufactured using supercritical methanol is much more stable toward moisture (and therefore more suitable for use in targets) than that produced using supercritical carbon dioxide. Aerogel materials were characterized by thermogravimetric analysis and Fourier transform infrared spectroscopy.