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Albuquerque, NM|The University of New Mexico
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The American Nuclear Society election is now open. Members can vote for the Society’s next vice president/president-elect and treasurer as well as six board members (four U.S. directors, one non-U.S. director, and one student director). Completed ballots must be submitted by 1:00 p.m. (EDT) on Tuesday, April 15, 2025.
R. M. Rubin
Nuclear Science and Engineering | Volume 47 | Number 2 | February 1972 | Pages 221-224
Technical Paper | doi.org/10.13182/NSE72-A22399
Articles are hosted by Taylor and Francis Online.
The exposure angular distributions above various ring isotropic and disk isotropic 60Co sources have been calculated in a constant density air medium and compared to Monte Carlo calculations and experimental data for the same sources located at the interface between air and ground. The effect of the interface for ring sources is found to be very similar to the expected results for point sources. For disk sources, the interface effects on the exposure angular distribution are presented as a ratio which has a simple exponential dependence on the cosine of the angle. The results for a very large disk (infinite plane isotropic source) yield correction factors to the assumption that earth can be treated as condensed air.
