CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2019, Vol. 36 ›› Issue (1): 39-46.DOI: 10.19596/j.cnki.1001-246x.7794

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Error Estimation of k-α Iteration Method for α Eigenvalue Problems

WANG Yi1, PAN Liujun2, WANG Ruihong2   

  1. 1. Graduate School of China Academy of Engineering Physics, Beijing 100088, China;
    2. Institute of Applied Physics and Computational Mathematics of Beijing, Beijing 100094, China
  • Received:2017-11-03 Revised:2018-01-11 Online:2019-01-25 Published:2019-01-25

Abstract: We analyze k-α iteration method for α eigenvalue problems, and point out that parameter in k-α iteration method affects error estimation of alpha eigenvalues, while error estimation has no relationship with the parameter. If the parameter isn't given properly, the estimated error deviates the real error estimation. Estimated error given by MCNP4C may deviates from real error estimation due to improper parameter. A parameter selecting method called average neutron fission lifetime method is proposed to make estimated error and real error estimation equal strictly in mathematics. It was tested with numerical experiments.

Key words: Monte Carlo, α eigenvalue, k-α iteration, error estimation

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