Positron Lifetime Characterization of Irradiated Pressure Vessel Model Alloys

M Valo; H Huomo; P Nyberg; P Hautojarvi

doi:10.1520/STP10400S

SYMPOSIA PAPER Published: 01 January 1989

STP10400S

Positron Lifetime Characterization of Irradiated Pressure Vessel Model Alloys

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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

Positron Lifetime Characterization of Irradiated Pressure Vessel Model Alloys

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