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Phys. Rev. ST Accel. Beams 4, 091301 (2001) [3 pages]

Collective refraction of a beam of electrons at a plasma-gas interface

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P. Muggli, S. Lee, and T. Katsouleas
University of Southern California, Los Angeles, California 90089

R. Assmann, F. J. Decker, M. J. Hogan, R. Iverson, P. Raimondi, R. H. Siemann, and D. Walz
Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309

B. Blue, C. E. Clayton, E. Dodd, R. A. Fonseca, R. Hemker, C. Joshi, K. A. Marsh, W. B. Mori, and S. Wang
University of California Los Angeles, Los Angeles, California 90095

Received 9 August 2001; published 28 September 2001

In a recent Brief Comment, the results of an experiment to measure the refraction of a particle beam were reported [P. Muggli et al., Nature 411, 43 (2001)]. The refraction takes place at a passive interface between a plasma and a gas. Here the full paper on which that Comment is based is presented. A theoretical model extends the results presented previously [T. Katsouleas et al., Nucl. Instrum. Methods Phys. Res., Sect. A 455, 161 (2000)]. The effective Snell's law is shown to be nonlinear, and the transients at the head of the beam are described. 3D particle-in-cell simulations are performed for parameters corresponding to the experiment. Additionally, the experiment to measure the refraction and internal reflection at the Stanford Linear Accelerator Center is described.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.4.091301
DOI: 10.1103/PhysRevSTAB.4.091301
PACS: 52.40.Mj, 42.25.Gy

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