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Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Penn State and Westinghouse make eVinci microreactor plan official
Penn State and Westinghouse Electric Company are working together to site a new research reactor on Penn State’s University Park, Pa., campus: Westinghouse’s eVinci, a HALEU TRISO-fueled sodium heat-pipe reactor. Penn State has announced that it submitted a letter of intent to host and operate an eVinci reactor to the Nuclear Regulatory Commission on February 28 and plans to engage with the NRC on specific siting decisions. Penn State already boasts the Breazeale reactor, which began operating in 1955 as the first licensed research reactor at a university in the United States. At 70, the Breazeale reactor is still in operation.
V. Spiegel, Jr., D. W. Oliver, R. S. Caswell
Nuclear Science and Engineering | Volume 4 | Number 4 | October 1958 | Pages 546-562
Technical Paper | doi.org/10.13182/NSE58-A28831
Articles are hosted by Taylor and Francis Online.
The average 1.44-ev indium resonance age has been determined from activation measurements for a D(d, n) He3 neutron source in water. The energy of the incident deuteron beam was 250 kev. The source emits neutrons anisotropically with energies from 3.12 Mev at 0° to 2.00 Mev at 180°. The activities were averaged over angle by the Gauss integration procedure using angles of 20.3°, 90°, and 159.7°. The average age, when corrected for the absence of moderator in the duct which brings the deuteron beam into the medium, is 34.6 ± 2.2 cm2. Rigorous theoretical calculations for a D+D neutron source by Zweifel give 33.6 cm2 for 100-kev incident deuterons and 33.8 cm2 for 150-kev deuterons. Any estimate of an age for a 250 kev D+ source would yield a larger value of age and closer agreement with this experiment. The variation of our measured ages versus angle may be understood qualitatively on the basis of effects due to the duct and the anisotropy of the source. A more precise theoretical check of this experiment is expscted when Monte Carlo calculations now in progress for precisely our geometry and source become available.
