Measurement of Dielectric Suppression of Bremsstrahlung
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
In 1953, Ter-Mikaelian predicted that the bremsstrahlung of low energy photons in a medium is suppressed because of interactions between the produced photon and the electrons in the medium. This suppression occurs because the emission takes place over on a long distance scale, allowing for destructive interference between different instantaneous photon emission amplitudes. We present here measurements of bremsstrahlung cross sections of 200 keV to 20 MeV photons produced by 8 and 25 GeV electrons in carbon and gold targets. Our data shows that dielectric suppression occurs at the predicted level, reducing the cross section up to 75 percent in our data.
Keywords
Cite
@article{arxiv.hep-ph/9512381,
title = {Measurement of Dielectric Suppression of Bremsstrahlung},
author = {P. L. Anthony and R. Becker-Szendy and P. E. Bosted and M. Cavalli-Sforza and L. P. Keller and L. A. Kelley and S. R. Klein and G. Niemi and M. L. Perl and L. S. Rochester and J. L. White},
journal= {arXiv preprint arXiv:hep-ph/9512381},
year = {2008}
}
Comments
11 pages, format is postscript file, gzip-ed, uuencode-ed