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APS » Journals » Phys. Rev. Lett. » Volume 63 » Issue 12
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Phys. Rev. Lett. 63, 1245–1248 (1989)

Observation of coherent synchrotron radiation

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T. Nakazato, M. Oyamada, N. Niimura, S. Urasawa, O. Konno, A. Kagaya, R. Kato, T. Kamiyama, and Y. Torizuka
Laboratory of Nuclear Science, Tohoku University, Mikamine Sendai 982, Japan

T. Nanba
Department of Physics, Faculty of Science, Tohoku University, Sendai 980, Japan

Y. Kondo
Department of Applied Physics, Faculty of Technology, Tohoku University, Sendai 980, Japan

Y. Shibata, K. Ishi, T. Ohsaka, and M. Ikezawa
Research Institute for Scientific Measurements, Tohoku University, Katahira Sendai 980, Japan

See Also: Erratum

Received 5 May 1989; published in the issue dated 18 September 1989

Coherent effects in synchrotron radiation (SR) have been observed for the first time from 180-MeV short electron bunches of 2.4 mm using the Tohoku 300-MeV Linac. The intensity of the coherent SR was about 105 times as strong as that of incoherent SR in the wavelengths of 0.4–2.2 mm. This enhancement factor corresponds to the number of electrons in a bunch. The SR intensity showed a quadratic dependence on the electron beam current. The radiation was mainly polarized in the orbital plane. The possibility of induced rf in a vacuum chamber was excluded experimentally.

© 1989 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.63.1245
DOI:
10.1103/PhysRevLett.63.1245
PACS:
42.72.+h, 29.15.Dt, 29.20.Dh, 41.70.+t

See Also

Erratum: T. Nakazato, M. Oyamada, N. Niimura, S. Urasawa, O. Konno, A. Kagaya, R. Kato, T. Kamiyama, Y. Torizuka, T. Nanba, Y. Kondo, Y. Shibata, K. Ishi, T. Ohsaka, and M. Ikezawa, Observation of Coherent Synchrotron Radiation, Phys. Rev. Lett. 63, 2433 (1989).

 
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