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  Parametric X-ray radiation in the Smith-Purcell geometry fornon-destructive beam diagnostics

Skoromnik, O. D., Feranchuk, I. D., & Lu, D. V. (2019). Parametric X-ray radiation in the Smith-Purcell geometry fornon-destructive beam diagnostics. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 444, 125-134. doi:10.1016/j.nimb.2019.01.003.

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Skoromnik, O. D.1, Author              
Feranchuk, I. D.2, Author
Lu, D. V.2, Author
Affiliations:
1Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,, ou_904546              
2external, ou_persistent22              

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 MPINP: Research group K. Z. Hatsagortsyan – Division C. H. Keitel
 Abstract: We investigate parametric X-ray radiation (PXR) under condition of the extremely asymmetric diffraction, when the ultra-relativistic electron bunch is moving in vacuum parallel to the crystal-vacuum interface, close to the crystal surface. This type of geometry coincides with the well known mechanism of generation of radiation, when the self-field of the particle beam interacts with the reflecting metal grating, namely the Smith-Purcell effect. We demonstrate that in this geometry the main contribution is given via a tail region of the beam distribution, which penetrates the crystal and X-rays are radiated along the normal to the crystal surface. We determine the electron beam characteristics, when this phenomenon can be observed. It is essential that in this geometry the majority of electrons does not undergo multiple scattering and consequently the characteristics of the particle beam are not changed, thus allowing the usage of the emitted X-rays for the purpose of non-destructive beam diagnostics, which can complement the traditional knife-edge method.

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 Dates: 2019-02-28
 Publication Status: Published online
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 Rev. Type: -
 Identifiers: DOI: 10.1016/j.nimb.2019.01.003
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Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  Abbreviation : NIM B
Source Genre: Journal
 Creator(s):
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Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 444 Sequence Number: - Start / End Page: 125 - 134 Identifier: ISSN: 0168-583X
CoNE: https://pure.mpg.de/cone/journals/resource/954925484704