Abstract
Hydrogen behaviour in stainless steel, titanium and vanadium alloys during ionising radiation (accelerated nitrogen ions, γ-quanta) has been studied. It was shown that ionizing radiation stimulates intensive migration of hydrogen (H-migration). The cross-section of interaction between the accelerated ions and H-atoms has been determined to be 10 −16 cm 2. A phenomenological model of ionisation-accelerated hydrogen migration in metals was suggested. Mechanisms of γ- and electron-stimulated dissociation of H-containing bonds inside a solid have been specified as Mensel—Gomer mechanisms, Auger process electron transfers from the therm of bond state to the therm of repulsion one, which subsequently will decay into fragments. The calculated probability of H-migration on the base of these mechanisms is in a good agreement with the experimental results.
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