HYDROGEN ISOTOPE RETENTION AND LATTICE DAMAGE IN THE CONSTRUCTIVE MATERIALS IRRADIATED WITH H+/D+ IONS

Abstract

The paper is the result of investigations the authors of initial stages of hydrogen isotope retention and migration, formation of radiation damages of lattice in the constructive materials irradiated wich H+/D+ ions. The studies methods were thermal desorption spectroscopy (TDS) combined with electron microscopy (TEM and SEM) and electrical resistance measurements. Deuterium retention was studied as a function of ion fluence, implantation temperature, incident ions energy and pre-implantation by He+ ions. Special attention was given to the investigation of thin films of constructive metals irradiated with D+ ions with the range greater than the film thickness. Also the trapping of deuterium in thin metallic films was investigated at D+ ions implantation (the range was comparable with the film thickness). Possible mechanisms are proposed to describe the observed processes.

Keywords

• defects
• deuterium
• hydrogen
• retention
• implantation
• desorption
• plasma-facing materials