Measurement of dielectric suppression of bremsstrahlung

Journal Article · Wed May 01 00:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.3550· OSTI ID:285677

Anthony, P L; Becker-Szendy, R; Bosted, P E; Cavalli-Sforza, M; Keller, L P; Kelley, L A; Klein, S R; Niemi, G; Perl, M L; Rochester, L S; White, J L ^[1]

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1. Stanford Linear Accelerator Center, Stanford, California 94309 (United States)

In 1953, Ter-Mikaelian predicted that low energy bremsstrahlung from relativistic electrons moving through a medium is suppressed, because of interactions between the emitted photon and the electrons in the medium. This suppression occurs because the emission takes place on a long distance scale, allowing for destructive interference between different instantaneous photon emission amplitudes. We present 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 show that dielectric suppression occurs at the predicted level, reducing the measured cross section up to 75{percent}. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098; AC03-76SF00515
• OSTI ID: 285677
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BREMSSTRAHLUNG
CARBON 12 TARGET
CROSS SECTIONS
DIELECTRIC PROPERTIES
ELECTRON REACTIONS
GOLD 197 TARGET
INTERFERENCE
PHOTONS