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Proceedings Paper

History and status of coherent bremsstrahlung
Author(s): Herbert Überall
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Paper Abstract

Coherent bremsstrahlung research originated with the 1955 papers by Dyson and Uberall, Ter-Mikaelian, and Ferretti. Its intermediate status thirty years later has been documented by Saenz and Uberall in the book Coherent Radiation Sources (A. W. Saenz and H. Uberall, editors), Springer, Berlin 1985. The first precision experiments were carried out by Diambrini-Palazzi et al. (1960) in Frascati shortly after the theory had been developed; see also Timm (1969). After experimentation by dozens of electron accelerator laboratories all over the world, there are presently measurements being made by Arends et al. at the University of Mainz (MAMI, 855 MeV), Klein et al. at the University of Bonn (ELSA, 3 GeV), at CERN (20-170 GeV) by Avakian of the Yerevan Physics Institute and others, and with electron energies of 6 GeV at the Jefferson Laboratory, Newport News, VA (F. J. Klein, Catholic University, spokesperson). At Jefferson Lab, linearly polarized quasi-monochromatic coherent-bremsstrahlung photons [peaked at 1.8GeV, with polarization (after collimation) of 84%] are being used for the production (off protons) of ρ and ω mesons among others. Recent theoretical research deals with coherent bremsstrahlung in quasicrystals (Fusina, Langworthy, and Saenz, 2001), and with planar and axial coherent bremsstrahlung in a diamond crystal (Chouffani, Endo, and Uberall 2001-2), both at low energies. In the latter study, in which the concept of axial coherent bremsstrahlung is now stressed (while in the related processes of planar and axial channeling radiation this distinction is well known), photon emission occurs here not necessarily in the forward direction.

Paper Details

Date Published: 7 December 2006
PDF: 13 pages
Proc. SPIE 5974, International Conference on Charged and Neutral Particles Channeling Phenomena, 597401 (7 December 2006);
Show Author Affiliations
Herbert Überall, Catholic Univ. of America (United States)

Published in SPIE Proceedings Vol. 5974:
International Conference on Charged and Neutral Particles Channeling Phenomena
Sultan B. Dabagov, Editor(s)

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