Abstract
A systematic study was carried out on the relation between the surface recombination rate constant of deuterium at a Nb surface and the oxygen concentration in bulk. Oxygen was introduced into a Nb specimen up to concentrations from 0.12 to 4.3 at.%. Then, deuterium was introduced into the specimen, and the surface recombination rate constant was measured by thermal desorption in a temperature range from 623 to 913 K. The surface recombination rate constant of deuterium decreased with increasing oxygen concentration in the solid solution phase. This reduction in the recombination rate constant was attributed to the increase of oxygen coverage at the surface with the bulk concentration. Irrespective of the bulk oxygen concentration, no significant increase was observed in the height of the potential barrier against desorption processes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
