小摄动理论在评估铅冷快堆瞬发中子寿命变化中的应用

Q4 Energy

Izvestiya Wysshikh Uchebnykh Zawedeniy, Yadernaya Energetika Pub Date : 2023-03-01 DOI:10.26583/npe.2023.1.03

V. Apse, A. Shmelev, G. Kulikov, E. Kulikov

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引用次数: 0

摘要

本文考虑了小摄动理论在评价铅冷快堆同位素组成变化引起的瞬发中子寿命变化中的适用性。提出了广义小摄动理论公式，用以计算双线性中子通量和中子值比的提示中子寿命的导数。提出了一种数值算法，用于逐步应用小摄动理论公式来评估由于反应堆同位素组成的大摄动，例如由于先前用作中子反射器的材料的完全改变而引起的中子寿命的迅速变化。该方法的优点在于基本上可以确定不同的中子反应、同位素和能量群在由反应堆同位素组成的主要变化引起的总提示中子寿命变化中的作用及其贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Application of Small Perturbation Theory for Assessing Variations of Prompt Neutron Lifetime in a Lead-Cooled Fast Reactor

The paper considers the applicability of small perturbation theory to assessing the variations of the prompt neutron lifetime caused by variations in the isotope composition of a lead-cooled fast reactor. The generalized small perturbation theory formulas have been developed to calculate derivatives of the prompt neutron lifetime regarded as a bilinear neutron flux and neutron worth ratio. A numerical algorithm has been proposed for the step-by-step application of the small perturbation theory formulas to assess the prompt neutron lifetime variations caused by a major perturbation in the reactor isotope composition, e.g. by the complete change of the material used earlier as the neutron reflector. The advantage of the proposed approach has been shown which consists in that it is basically possible to determine the role of different neutron reactions, isotopes and energy groups in and their contributions to the total prompt neutron lifetime variation caused by major changes in the reactor isotope composition.

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来源期刊

Izvestiya Wysshikh Uchebnykh Zawedeniy, Yadernaya Energetika Energy-Nuclear Energy and Engineering

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： The scientific journal Izvestiya Wysshikh Uchebnykh Zawedeniy, Yadernaya Energetika is included in the Scopus database. Publisher country is RU. The main subject areas of published articles are Nuclear Energy and Engineering, Физика, Приборостроение, метрология и информационно-измерительные приборы и системы, Информатика, вычислительная техника и управление, Энергетика. Before sending a scientific article, we recommend you to read the section For authors. This will allow you to prepare an article better for publication, to make it more interesting for the readers and useful for the scientific community. By following these steps, you will greatly increase the likelihood of your scientific article publishing in journals included in international citation systems (e.g., Scopus). Then you may choose a different journal, select the journal included to list of SAC Russia journal list, or send your scientific work for review and publication.