Neutron-induced helium implantation in GCFR cladding

Technical Report · Wed Oct 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/6808818· OSTI ID:6808818

Yamada, H.; Poeppel, R. B.; Sevy, R. H.

The neutron-induced implantation of helium atoms on the exterior surfaces of the cladding of a prototypic gas-cooled fast reactor (GCFR) has been investigated analytically. A flux of recoil helium particles as high as 4.2 x 10/sup 10/ He/cm/sup 2/.s at the cladding surface has been calculated at the peak power location in the core of a 300-MWe GCFR. The calculated profile of the helium implantation rates indicates that although some helium is implanted as deep as 20 ..mu..m, more than 99% of helium particles are implanted in the first 2-..mu..m-deep layer below the cladding surface. Therefore, the implanted helium particles should mainly affect surface properties of the GCFR cladding.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 6808818
• Report Number(s): ANL-80-72; TRN: 81-000854
• Country of Publication: United States
• Language: English

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