Migration of hydrogen in steel and alloys, stimulated by ionizing radiation

I. P. Chernov, A. P. Mamontov, Yu I. Tyurin, Yu P. Cherdantsev

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A study is made of the behavior of hydrogen in stainless steel and alloys of titanium and vanadium during exposure of the metals to ionizing radiation (accelerated nitrogen ions, γ-quanta). It is shown that the radiation stimulates intensive migration of hydrogen. The cross section of the accelerated ions is 10-16 cm2. This shows that hydrogen is released from traps as a result of excitation of the electronic subsystem and vibrational degrees of freedom of the hydrogen bonds, with the excitation energy subsequently being transferred to the nuclear subsystem. A phenomenological model is proposed to describe the ionization-accelerated migration of hydrogen in metals. Gamma- and electron-stimulated dissociation of hydrogen-containing bonds inside a solid occur by the Mensell - Homer and Auger mechanisms, as well as by nonadiabatic transition and vibrational-translational exchange. The calculated probability of the migration of hydrogen by these mechanisms is found to agree well with the experimental data.

Original languageEnglish
Pages (from-to)1072-1078
Number of pages7
JournalRussian Physics Journal
Volume37
Issue number11
DOIs
Publication statusPublished - Nov 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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