Abstract
We report the observation of shadowing between two optical transition radiation (OTR) sources from a 205 MeV electron beam. The total optical intensity is measured as a function of the distance between the sources, covering the range , where is the formation length of the particles. Data show that the total optical intensity starts decreasing due to shadowing when approaches until it becomes undetectable for very short distances . A model based solely on interference between the two OTR sources is in good agreement with experimental data. To the knowledge of the authors this is the first systematic experimental observation of shadowing in OTR.
- Received 7 July 2017
DOI:https://doi.org/10.1103/PhysRevLett.120.094802
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Published by the American Physical Society