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![[Figure 2]](il5070fig2mag.jpg)
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Figure 2
Operation of the HF deflector at 5 MHz at beamline I 1011 at MAX II (filling pattern 100 MHz); data recorded for a W(110) surface at hν = 500 eV. (a) Spatio-temporal action visible in a measured I(y, t) cut through the 3D intensity distribution on the delay-line detector for fully opened pinhole 2. The two closely spaced lines correspond to the W 4f7/2,5/2 doublet, shifted along y by the fast deflector. (b, c, d) I(t) spectra with different degree of extinction, taken for three different positions of the selector aperture pinhole 2 as indicated in (a). (e) Survey ToF spectrum (range ∼500 eV) recorded for complete extinction; the spectrum is strongly dominated by the secondary-electron peak (SE). Inset (e1): measured X-ray photoelectron diffraction (XPD) pattern for W 4f7/2 with the main Kikuchi bands being marked by dashed lines. Inset (e2): calculated W 4f7/2 XPD pattern. (f, g) W 4f core-level doublet and (h) valence-band spectrum taken at lower drift energy of 30 eV shown on a stretched time scale. The high background in the valence-band region (h) originates from higher-order contributions of the monochromator. Parts of the surface showed an oxidic overlayer (g). |
![[Figure 2]](il5070fig2.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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