Slow positron beam studies of zirconium exposed to dry sliding

14th International Workshop on Slow Positron Beam Techniques & Applications

Dryzek, Jerzy^1 ; Horodek, Pawel^1,2

Institute of Nuclear Physics Polish Academy of Sciences, ul. Radzikowskiego 152, Kraków

PL-31342, Poland^1

Joint Institute for Nuclear Research, Joliot-Curie 6, Moscow region, Dubna

141980, Russia^2

关键词: Damaged surfaces;    Dry sliding;    Line shape parameters;    Positron diffusion;    Recovery process;    Slow positron beam;    Vacancy cluster;    Worn surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/791/1/012020/pdf
DOI  :  10.1088/1742-6596/791/1/012020

来源: IOP

【 摘 要 】

Slow positron beam studies of Zr samples exposed to dry sliding are reported. The observed increase of the annihilation line shape parameter indicates generation of vacancy clusters although an increase of the positron diffusion length suggests recovery process indicated by sliding. The increase of the number of positronium created on the worn surface in comparison to the non damaged surface was noticed.