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![[Figure 1]](il5041fig1mag.jpg)
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Figure 1
Recording schemes of a HAXPES experiment using a k-imaging time-of-flight spectrometer (a) in comparison with a dispersive hemispherical spectrometer (b). In (a), 3D data arrays I(Ekin,kx,ky) are recorded using a delay-line detector. There is no beam-confining slit (except the field aperture selecting the region of interest in real space). In (b), 2D arrays I(Ekin,θ) are recorded and the second angular coordinate is varied either by sample rotation or by deflectors in the lens optics. The desired energy resolution demands a sufficiently `thin' isochrone surface with small width Δt at the entrance of the ToF section (a) and a sufficiently narrow entrance slit with width Δx at the entrance of the hemisphere (b). |
![[Figure 1]](il5041fig1.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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