Erosion of beryllium and deposition of carbon and oxygen due to bombardment with C(+) and CO(+) ions
The bombardment of clean, metallic beryllium with carbon and the co-bombardment with carbon and oxygen is investigated experimentally and by computer simulation. The simulation is carried out with the Monte Carlo code TRIDYN. The results of carbon bombardment from experiment and simulation agree well and show the buildup of a carbon adlayer on the metal surface. After the carbon adlayer formation, no more Be is eroded. For C and O co-bombardment, carried out by CO(+) ion bombardment, simulation and experiment agree for low fluences. At higher fluences, another erosion channel beesides kinematic sputtering is opened by the chemical interactions of C and O. This leads to deposition/erosion equilibrium which is not predicted by the kinematic TRIDYN code. The formation of a ternary mixture layer on the Be target leads to a continuous erosion of the beryllium target.
Bibliographic Reference: Article: Jourmal of Nuclear Materials, 266-269 (1999), 581-586
Record Number: 199910763 / Last updated on: 1999-05-21
Original language: en
Available languages: en