Observation of coherent synchrotron radiation from the NSLS VUV ring
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چکیده
We report the observation of multiparticle coherent emission in the very far infrared from bunched electrons in an electron storage ring. The emission occurs in quasi-periodic bursts, and only when the electron beam current exceeds a threshold value, suggesting an instability-driven modulation of the electron bunch density. For the operating conditions reported, the spectral content of the coherent emission is peaked near a wavelength of 7mm. This wavelength is much shorter than the nominal electron bunch length, indicating the presence of a density modulation within the bunch. # 2001 Published by Elsevier Science B.V. PACS: 29.27.Bd; 29.20.Dh; 41.60.Ap
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تاریخ انتشار 2001