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Research on Detailed Depletion Chain Solving Algorithm With the NUIT Code

[+] Author Affiliations
Jian Li, Ding She, Lei Shi

Tsinghua University, Beijing, China

Paper No. ICONE25-66238, pp. V003T02A008; 4 pages
  • 2017 25th International Conference on Nuclear Engineering
  • Volume 3: Nuclear Fuel and Material, Reactor Physics and Transport Theory; Innovative Nuclear Power Plant Design and New Technology Application
  • Shanghai, China, July 2–6, 2017
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5781-6
  • Copyright © 2017 by ASME


Burnup calculation and nuclide inventory calculation may require solving detailed depletion chains with high computational accuracy and efficiency. NUIT (NUclide Inventory Tool) is a newly-developed nuclide inventory calculation code, which is capable of handling detailed depletion chains by implementing various advanced algorithms. Based on the NUIT code, this paper investigates the accuracy and efficiency of the Mini-Max Polynomial Approximation (MMPA) method, and compare it with the Chebyshev Rational Approximation Method (CRAM). It is concluded that both methods are numerically accurate and efficient for dealing with detailed depletion chains with extremely short half-lived nuclides.

Copyright © 2017 by ASME
Topics: Algorithms , Chain



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