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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
Zhang Huanqiao, Liu Zuhua, Ding Shengyue, and Liu Shaoming
Nuclear Science and Engineering | Volume 86 | Number 3 | March 1984 | Pages 315-319
Technical Note | doi.org/10.13182/NSE84-A17560
Articles are hosted by Taylor and Francis Online.
This research was published (in Chinese) in Chin. J. Nucl. Phys., 3, 2, 149 (1981). The average number of prompt neutron and the distributions of prompt neutron number probability P(ν) for spontaneous fission of 240Pu, 242Cm, and 244Cm relative to (252Cf) have been measured using a large gadolinium-loaded liquid scintillation counter with a co-incidence method. The results were (240Pu) = 2.141 ± 0.016, (242Cm) = 2.562 ± 0.020, and (244Cm) = 2.721 ±0.021. The measured distributions of prompt neutron number were fitted with Gaussian curves by a weighted least-squares method. The widths of Gaussian distribution are 1.149 ± 0.047, 1.159 ± 0.074, and 1.175 ± 0.098 for 240Pu, 242Cm, and 244Cm, respectively. These results as well as a previous measurement of spontaneous fission of 252Cf show the linear variation of σ with at the first order of approximation. The data were fitted by a least-squares method, and the result is given by σ = 0.980 + 0.076. This fact demonstrates the trend that the width of the excitation energy distribution of fission fragments increases with the average excitation energy of the fission fragments in the range of nuclides mentioned above.