Abstract
A pulsed atomic hydrogen beam source has been developed especially for studies of surface reactions. Atomic hydrogen is generated using a microwave discharge in a quartz tube and is collimated to a beam by differentially pumped stages. A hydrogen dissociation fraction of ∼70% and a beam flux of 4×1014 atoms·cm-2·s-1 with a spot size 7 mm in diameter are obtained. The beam is chopped with a mechanical disk chopper, and a pulse duration of 50 µs for a repetition rate of 100 pulses/s is obtained. The velocity distribution of the atomic hydrogen beam is fitted with a shifted Maxwell-Boltzmann distribution that gives a most probable velocity of 2410 m/s and a beam temperature of 70 K.
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.
