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Title: Pulse Frequency Effect on Neutron Damage in -Iron: A KMC Analysis

The pulsed nature of the irradiation and the high neutron dose are the critical factors in an Inertial Fusion Energy reactor (IFE). The damage that structural materials suffer under these extremes conditions require a careful study and assessment. The goal of our work is to simulate, trough the multiscale modeling approach, the damage accumulation in {alpha}-Fe under conditions relevant to a IFE Reactor. We discuss how the pulse frequency, 1 Hz, 10 Hz, and the dose rate of 10{_} and 10{_}dpa/s affect the damage production and accumulation. Results of the damage that this demanding environment can produce on a protected first structural exposed to 150 keV average recoil ion will be presented. A further comparison it has been made with the damage produced by a continuous irradiation at similar average dose.
Authors:
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Publication Date:
OSTI Identifier:
15005292
Report Number(s):
UCRL-JC-143812
TRN: US200322%%359
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 2001 Materials Research Society Spring Meeting, San Francisco, CA (US), 04/16/2001--04/20/2001; Other Information: PBD: 1 May 2001
Research Org:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BUILDING MATERIALS; CHRONIC IRRADIATION; DOSE RATES; IRON; IRRADIATION; NEUTRONS; PRODUCTION; SIMULATION; THERMONUCLEAR REACTORS