Principal Beamline Scientist:
Georg Held
Tel: +44 (0) 1235 778480
E-mail: [email protected]
Email: [email protected]
Tel: +44 (0)1235 778290
The ambient pressure (AP) XPS endstation is a modular system that allows maximum flexibility with respect to sample environments. The concept consists of a fixed interface flange which holds the entrance cone of the ambient-pressure electron energy analyser (SPECS Phoibos NAP-150) and the differentially pumped beamline entrance, as illustrated in the figure below. Exchangeable reaction/experiment cells and chambers can then be installed without affecting the alignment of the beamline and analyser.
At the moment, there are two experimental chambers avalible, a large UHV-compatible chamber (tea pot) and a small-volume reaction cell (tea cup).
Please contact the beamline staff to discuss possible alternative options.
Beamline Specifications
| Energy range | 110 - 2800 eV |
| Resolving power (ΔE/E) | 5000 (250 eV - 2500 eV) |
| Minimum beam size at sample (FWHM) | 90 μm (H) × 60-100 μm (V) |
| Photon flux | > 1 × 1010 ph/s |
| Beam position stability at sample | < 5 μm/h; < 10 μm/day |
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