Phys. Rev. ST Accel. Beams 8, 091301 (2005) [11 pages]Role of the grating profile in Smith-Purcell radiation at high energies
J. H. Brownell
G. Doucas * Received 6 May 2005; published 2 September 2005 The passage of a finely focused electron beam near the surface of a periodic metallic grating produces radiation known as Smith-Purcell radiation. This paper presents an analysis of the role of the grating profile in the case of echelle-type gratings whose period consists of two facets only. Particular emphasis is placed on the ultrarelativistic regime and a comparison is made with recent experimental results in this region. It is shown that the details of the profile of the grating play an important role in the optimization of the radiated energy. The behavior of higher order modes and the limitations of the surface current description of the radiative process are also discussed briefly. ©2005 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.8.091301 * Corresponding author. [ Abstract | Previous article | Next article | Issue 9 ] |
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