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Effects of Alpha Irradiation on Barium Hollandite and Nickel-Iron Spinel

Published online by Cambridge University Press:  26 February 2011

W. J. Weber
W. J. Weber*
Affiliation:
Pacific Northwest Laboratory, (a) P.O. Box 999, Richland, WA 99352
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Abstract

Barium hollandite and nickel-iron spinel have been irradiated with alpha particles emitted from a PuO2 source in order to simulate the effects from alpha particles emitted in adjacent actinide-containing phases of the SYNROC assemblage. The unit cell of barium hollandite undergoes an apparent volume expansion of several percent and a weak transformation from a tetragonal to a monoclinic structure when irradiated with alpha particles to a fluence of 3 × 1020 alphas/m2 (∼0.05 dpa). The spinel structure, however, is stable with respect to alpha irradiation and the irradiation-induced volume expansion of the unit cell is less than 0.2%. The results are compared with available neutron-irradiation data, and the differences in observed behavior discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 671
Copyright
Copyright © Materials Research Society 1985

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