title: Performance of the VUV beamline 4.1 at the SRS, Daresbury Laboratory.
abstract: The performance of a recently commissioned beamline, designated BL4.1, at the SRS, Daresbury Laboratory, is described. This beamline covers the energy range 15 >/= hupsilon >/= 200 eV, using a spherical grating monochromator, and is equipped with a UHV surface-science endstation containing a Scienta SES200 and an HA54 angle-resolving electron-energy analyser. Design parameters and optical specifications are tabulated. Monochromator resolution has been determined by measuring the Fermi edge of a Pt foil cooled to 40 K and these values are compared with the calculated resolution. The flux delivered to the endstation has been measured directly using a calibrated photodiode. The performance of the beamline is further illustrated by reference to a study of the angular distribution of photoemitted intensity from a band-gap state on a TiO(2)(110) 1 x 2 surface.
authors.affiliation: Surface Science Research Centre, University of Liverpool, PO Box 147, Liverpool L69 3BX, UK.
authors.forename: V R
authors.initials: VR
authors.lastname: Dhanak
authors.forename: A G
authors.initials: AG
authors.lastname: Shard
authors.forename: C A
authors.initials: CA
authors.lastname: Muryn
authors.forename: P L
authors.initials: PL
authors.lastname: Wincott
authors.forename: G
authors.initials: G
authors.lastname: Thornton