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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
August 2025
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The newest era of workforce development at ANS
As most attendees of this year’s ANS Annual Conference left breakfast in the Grand Ballroom of the Chicago Downtown Marriott to sit in on presentations covering everything from career pathways in fusion to recently digitized archival nuclear films, 40 of them made their way to the hotel’s fifth floor to take part in the second offering of Nuclear 101, a newly designed certification course that seeks to give professionals who are in or adjacent to the industry an in-depth understanding of the essentials of nuclear energy and engineering from some of the field’s leading experts.
Koji Oishi, Yujiro Ikeda, Chikara Konno, Tomoo Nakamura
Fusion Science and Technology | Volume 18 | Number 2 | September 1990 | Pages 291-309
Technical Paper | Shielding | doi.org/10.13182/FST90-A29301
Articles are hosted by Taylor and Francis Online.
The principal components of concrete were irradiated by 14-MeV neutrons for measurement of their induced activities to verify the activation calculation code THIDA-2 and its related cross-section library CROSSLIB. The observed radioactive nuclides, whose half-lives range from minutes to years, were 28Al, 29Al, 27Mg, 44K, 41Ar, 56Mn, 42K, 24Na, 43K, 48Sc, 47Sc, 47Ca, 46Sc, 54Mn, and 22Na, Experimental and calculated results were compared. Good agreement was obtained within ±20%, for 28Al, 56Mn, 42K, 24Na, 48Sc, 47Ca, 46Sc, and 54Mn with well-estimated production cross sections. Large differences were also observed, however, ranging in value from −50 to +100%, for the other nuclides. The cross-section values near 14 MeV for these nuclides were replaced with the cross-section data measured at the Fusion Neutronics Source at the Japan Atomic Energy Research Institute. Recalculation was performed using the newly estimated group cross sections derived from these data, and agreement between experiment and calculation was improved to within ±20%. From this experimental study, it was proved that the uncertainties of the activation cross-section values could satisfactorily explain the discrepancies of the induced activity calculation.
