Published August 2024 | Version v1
Journal article Metadata-only

Study on the effects of 135Xe and 149Sm on reactivity in megawatt-level heat pipe reactors

Creators

  • 1. CAS Hefei Institute of Technology Innovation, Hefei (China)
  • 2. Chinese Academy of Sciences, Hefei (China). Hefei Institutes of Physical Science

Description

The effect of 135Xe and 149Sm on the reactivity of a typical megawatt heat pipe reactor had been studied by MCNP and SuperMC-CAS. The results showed that the reactivity introduced by 135Xe was only 8 pcm. The concentration of 149Sm increased with the core running time, highlighting its significant poisoning effect. A simplified calculation method for determining the equilibrium xenon poisoning value of a fast neutron reactor was proposed in this study. These results provided valuable insights for assessing xenon and samarium poisoning in low-power, fast neutron reactors. (author)

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
333
Journal Issue
8
Journal Page Range
p. 4211-4217
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
55080200
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
FAST REACTORS; HEAT PIPES; NEUTRONS; NUCLEAR POISONS; REACTIVITY; REACTORS; SAMARIUM 149; XENON 135
Descriptors DEC
BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; ELEMENTARY PARTICLES; EPITHERMAL REACTORS; EVEN-ODD NUCLEI; FERMIONS; HADRONS; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MATERIALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; NUCLEONS; RADIOISOTOPES; RARE EARTH NUCLEI; REACTOR MATERIALS; REACTORS; SAMARIUM ISOTOPES; STABLE ISOTOPES; XENON ISOTOPES

Optional Information

Notes
8 refs.