Abstract
AbstractPositron annihilation is measured for nickel containing defects carefully controlled by cold‐rolling, by further tempering, and by hydrogen doping. By the cold‐rolling the mean positron lifetime was increased from 123 to 179 ps corresponding to the formation of single vacancies and dislocations. The mean lifetime does not change significantly at further tempering. On hydrogen doping of the cold‐rolled sample a long lifetime component of about 390 ps appears, but a similar long lifetime component does not appear by hydrogen doping of the tempered sample. This suggests that hydrogen forms a composite with a vacancy which then becomes the center of vacancy agglomeration. The S‐parameter of the Doppler broadened annihilation radiation also shows changes completely in accordance with this interpretation.
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.
