Abstract

The recovery of a nitrogen bombarded molybdenum single crystal is studied with thermal helium desorption spectrometry (THDS). A new recovery stage at T = 900 K is found, which is ascribed to the dissociation of nitrogen occupied monovacancies (NV). The dissociation is a first order process with activation energy E D = 2.55 ± 0.05 eV; the binding energy of a nitrogen atom to a vacancy is estimated to be 1.35 ± 0.05 eV.

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