High-flux normal incidence monochromator for circularly polarized synchrotron radiation
A 6.5-m normal incidence monochromator installed at the storage ring BESSY, which is optimized for a high throughput of circularly polarized off-plane radiation at moderate resolution is described. The monochromator employs two exit slits and is specially designed and used for low-signal experiments such as spin- and angle-resolved photoelectron spectroscopy on solids, adsorbates, free atoms, and molecules. The Monk--Gillieson mounting (plane grating in a convergent light beam) allows for large apertures with relatively little astigmatism. With two gratings, a flux of more than 10/sup 11/ photons s/sup -1/ bandwidth/sup -1/ (0.2--0.5 nm) with a circular polarization of more than 90% in the wavelength range from 35 to 675 nm is achieved.
- Research Organization:
- Berliner Elektronenspeicherring Gesellschaft fuer Synchrotronstrahlung mbH, Lentzeallee 100, D-1000 Berlin 33, West Germany
- OSTI ID:
- 5934709
- Journal Information:
- Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 57:6; ISSN RSINA
- Country of Publication:
- United States
- Language:
- English
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