Abstract
The interference of transition radiation coherently produced from a periodic stack of four polyimide foils of 7.2 μm thickness and a separation of 162 μm was investigated. This stack has been brought into the low emittance (3 π nm rad) electron beam of the 855 MeV Mainz Microtron MAMI. Transition radiation was observed in the energy range from 2 to 15 keV with a LN2-cooled pin photodiode. A good energy resolution of 0.8 keV and angular resolution of 0.15 mrad was achieved simultaneously allowing for the first time to quantitatively study the interference pattern. Good agreement with theoretical calculations is found. Prospects to exploit transition radiation in the x-ray region from a low emittance electron beam as a high brilliant radiation source are discussed.
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Dedicated to Prof. Dr. Peter Brix on the occassion of his 75th birthday.
Supported by Deutsche Forschungsgemeinschaft DFG (SFB 201). This paper comprises part of the doctoral thesis of R. Zahn
We gratefully acknowledge the support of this project by the Deutch Forschungsgemeischaft through the Sonderforschungsberei SFB 201 “Mittelenergiephysik mit elekromagnetischer Wechselwirkung”. One of the authors (F.R.B.) expresses sincere thanks to the Deutsche Forschungsgemeinschaft for financial support enabling his stay at the Johannes Gutenberg-Universität Mainz.
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Backe, H., Gampert, S., Grendel, A. et al. Resonant transition radiation in the X-ray region from a low emittance 855 MeV electron beam. Z. Physik A - Hadrons and Nuclei 349, 87–92 (1994). https://doi.org/10.1007/BF01296337
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DOI: https://doi.org/10.1007/BF01296337