Bochum 1998 – scientific programme
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HK: Hadronen und Kerne
HK 41: Application of Nuclear Techniques II
HK 41.4: Talk
Tuesday, March 17, 1998, 18:00–18:15, G
A Single Crystal X–Ray Monochromator at the Mainz Microtron MAMI — •O. Kettig, H. Backe, N. Clawiter, S. Dambach, Th. Doerck, H. Euteneuer, F. Hagenbuck, K.-H. Kaiser, G. Kube, W. Lauth, J. Lind, H. Mannweiler, H. Schöpe, A. Steinhof, and Th. Walcher — Institut für Kernphysik, Universität Mainz, J.-J.Becher Weg 45, D-55099 Mainz
The detailed investigation of radiation phenomena associated with the passage of relativistic electrons through matter such as transition radiation or parametric x–radiation requires a relative energy resolution in the order of 10−4. A single crystal monochromator has been constructed and successfully tested at the Mainz Microtron MAMI. X–ray source, monochromator and detector are symmetrically arranged on a Rowland circle in Johann geometry [1]. The triangular shaped, elastically bent [2] silicon crystal images the x–ray beam to a monochromatic line focus in the detector plane 5.50 m apart from the crystal. Measurements of focus size and energy resolution at the K–absorption edge of molybdenum (20000 eV) agree with calculations. The monochromator will be part of a new interferometer in the hard x–ray regime between 5 and 40 keV which is currently developed.
[1] H.H. Johann, Z. Phys. 69, 185 (1931)
[2] A. Henins, Rev. Sci.. Instr. 58(7), 1173 (1987)
Work supported by DFG(SFB201) and BMBF(06 MZ 863I9(PP2))