POSITRON LIFETIME STUDIES ON SYSTEMS OF PALLADIUM FILLED GALVANOSTATICALLY WITH HYDROGEN OR DEUTERIUM

Qiu Wanchuan，

Dong Qinghua，

Gan Fuxing

Nuclear Science and Techniques

Vol.2, No.3

pp.157-163

Published in print 01 Aug 1991

41900

The positron lifetime spectroscopy was used to investigate the electron structures of crystal lattice and its defects in palladium samples filled galvanostatically with hydrogen and deuterium, respectively. The results have indicated that the positron lifetime were all the same between hydrogen and deuterium filled samples in which the positron lifetime τ, increased about 10%, corresponding to the volume expansibility after the formation of hydrides PdH or PdD phases during electrolyzing commom water or heavy water with Pd cathode; and will not change with time in 3 weeks after stopping electrolysis; but could be recovered to 116±1 ps, the value in polycrystalline pure palladium, after annealing at high temperature.

Positron lifetimeHydrogenDeuteriumPalladium

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