Abstract
Angle-resolved kinetic energy distributions have been measured for atoms desorbed from (100) and (110) surfaces of KBr and the (100) surface of KCl due to electron bombardment. We found strong directional emission of nonthermal halogen atoms along the 〈100〉 axis of the investigated crystals rather than along the 〈110〉 axis as expected. Angular distributions of both halogen and alkali atoms emitted with thermal energies were found to be uniformly cosine with respect to the surface normal for all crystal faces. Fast hole diffusion to the bombarded surface and nonradiative decay of selftrapped surface excitons are proposed as essential elements in the explanation of these results.
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.
