Beamline I511-1 and I511-3 - Short information |
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Beamline I511 is an undulator based VUV, soft X-ray beamline aimed at high resolution High Pressure X-ray Photoemission Spectroscopy (HP-XPS)#, X-ray Absorption Spectroscopy (XAS)#,* and X-ray Emission Spectroscopy (XES)*. The beamline has two branch lines, I511-1 and I511-3, utilizing a common undulator an monochromator with a flip-mirror placed immediately after the exit slit to direct the radiation alternately into these two stations.
- The I511-1 experimental station (HP-XPS) is equipped with analyzers for XPS and XAS on surfaces under near-ambient pressure conditions.
- The I511-3 experimental station is equipped with analyzers for XAS and XES and can handle non-UHV compatible solids, liquids, and gases.
# HP-XPS end station
* Bulk endstation.
Contact persons:
Annette Pietzsch, beamline manager I511
Franz Hennies, beamline scientist I511
Reference:
R. Denecke, P. Vaterlein, M. Bassler, N. Wassdahl, S. Butorin, A. Nilsson, J.-E. Rubensson, J. Nordgren, N. Martensson and R. Nyholm, J. Electron Spectrosc. Relat. Phenom.,101-103, 971, 1999.
Technical data:
| Source |
Undulator, period = 52 mm, 49 periods, Kmax = 2.7. |
| Pre-focusing optics |
Horizontally focusing spherical mirror. |
| Monochromator |
Modified SX-700 with 250 l/mm and 1220 l/mm gratings, a spherical focusing mirror and movable exit slit. This allows a high flexibility concerning the interplay between photon flux, resolving power and higher order suppression. |
| Energy range |
50 - ~1500 eV. |
| Energy resolution |
E/dE = 5x103 - 2x104, with the 1220 l/mm grating. |
| Re-focusing optics |
K-B mounted mirrors, one system for each branch line. |
| Photon flux on sample |
1011 - 1013 ph/s for the 1220 l/mm grating. |
| Experimental stations |
The radiation can be fed alternately into two experimental stations using a flip-mirror placed immediately after the exit slit.
I511-1 is designed for surface science experiments and is equipped with a SPECS Phoibos 150 NAP electron analyser for HP-XPS. HP-XAS can be carried out in Auger-yield mode.
I511-3 is designed for XES and XAS on both gas phase, and solid phase systems as well as on liquids not requiring UHV.
The bulk end station is built so that the analysis chamber can be rotated around the incoming beam which makes it possible to utilize the linear polarization of the incoming beam. |
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