SYMPOSIA PAPER Published: 01 January 1989
STP10400S

Positron Lifetime Characterization of Irradiated Pressure Vessel Model Alloys

Source

We have measured positron lifetimes in pressure vessel steel model alloys of A533-B and A302-B type, containing various amounts of Cu, Mn, Mo, and Ni alloying elements. Samples were prepared from broken halves of irradiated Charpy specimens used earlier for radiation sensitivity and composition interaction studies. The observed changes in the average positron lifetime seem to correlate well with changes in the alloy composition. A preliminary interpretation of the lifetime values is given.

Author Information

Valo, M
Reactor Laboratory, Technical Research Center of Finland (VTT), Espoo, Finland
Huomo, H
Laboratory of Physics, Helsinki University of Technology, Espoo, Finland
Nyberg, P
Laboratory of Physics, Helsinki University of Technology, Espoo, Finland
Hautojarvi, P
Laboratory of Physics, Helsinki University of Technology, Espoo, Finland
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Details
Developed by Committee: E10
Pages: 257–261
DOI: 10.1520/STP10400S
ISBN-EB: 978-0-8031-5074-4
ISBN-13: 978-0-8031-1187-5