Abstract
Abstract A nozzle beam of molecular oxygen was scattered from clean and oxygen-covered Pt(111) surfaces and velocity distributions of the scattered molecules were investigated by time-of-flight (TOF) measurements. From the clean surface at a surface temperature of T s = 900 K mainly direct quasi-elastic scattering is observed whereas from the oxygen-covered surface (p(2 × 2) layer as confirmed by LEED) at T s = 300 K the TOF distribution is composed of two parts: besides some directly scattered molecules a relatively high number of molecules with a Maxwellian distribution according to T s = 300 K appears. These thermalized molecules are attributed to a trapping-desorption channel. Our results provide new and rather direct experimental proof for interpretations of angular distributions already known from literature.
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.
