Aging characteristics of Zr-V-Fe getters as observed by Mossbauer spectroscopy

Changes in the chemical environment of iron in Zr-V-Fe getters, as a functi on of hydriding-dehydriding cycles and exposure to impurities, were examine d using Mossbauer spectroscopy. Three clearly distinct groups of spectral p arameters were observed for unused. hydrided and poisoned getter samples. T he nature of the getter-deactivation process is discussed, based on these M ossbauer spectral observations. (C) 1999 Elsevier Science B.V. All rights r eserved.