SYMPOSIA PAPER Published: 01 January 2001

Radiation Hardening in BWR Core Shrouds: Relative Roles of Neutron and Gamma Irradiation


We present a calculation of the displacement rates and freely migrating defect production caused by neutron and gamma irradiation and their roles on causing irradiation hardening in a BWR core shroud. We find that the neutron displacement rate is much higher than the gamma displacement rate, but that the freely-migrating defects produced by gamma irradiation are significant compared to those produced by neutrons. We evaluate the influence of gamma and neutron irradiation on hardening using a point defect clustering model. We find that the influence of gamma irradiation on radiation hardening in the core shroud is small compared to that for neutron irradiation.

Author Information

Kwon, J
Pennsylvania State University, University Park, PA
Motta, AT
Pennsylvania State University, University Park, PA
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Developed by Committee: E10
Pages: 607–616
DOI: 10.1520/STP13648S
ISBN-EB: 978-0-8031-5450-6
ISBN-13: 978-0-8031-2884-2