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Abstract
U49/2 PGM1 is one of HZB open-port VUV beamlines. Therefore and due to the fact that it delivers highest flux with very acceptable energy resolution it is the most heavily booked BESSY II beamline. Earlier work has largely focused on surface science and catalysis. After shut down of the former U41 PGM an increasing number of experiments on liquids and solutions are carried out.
Highlights
The plane grating monochromator U49/2 PGM1 delivers soft X-ray undulator radiation of linear polarization between 84 and about 1500 eV
Experiments have a strong focus on surface chemistry and surface physics and serve selected topics in molecular and atomic science
The high demand of these radiation properties is visible by the overbooking in beam time requests and the number and quality of high impact publications by external and in-house users
Summary
The plane grating monochromator U49/2 PGM1 delivers soft X-ray undulator radiation of linear polarization between 84 and about 1500 eV. High photon ux combined with high stability and a comparatively small spot size allow for "photon hungry" experiments like e.g. coincidence methods, photoexcitation on liquid jets or clusters. Experiments have a strong focus on surface chemistry and surface physics and serve selected topics in molecular and atomic science.
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