Refraction of a particle beam

Patric Muggli, Seung Lee, Thomas Katsouleas (), Ralph Assmann, Franz-Joseph Decker, Mark J. Hogan, Richard Iverson, Pantaleo Raimondi, Robert H. Siemann, Dieter Walz, Brent Blue, Christopher E. Clayton, Evan Dodd, Ricardo A. Fonseca, Roy Hemker, Chandrashekhar Joshi, Kenneth A. Marsh, Warren B. Mori and Shoquin Wang
Additional contact information
Patric Muggli: University of Southern California
Seung Lee: University of Southern California
Thomas Katsouleas: University of Southern California
Ralph Assmann: Stanford Linear Accelerator Center, Stanford University
Franz-Joseph Decker: Stanford Linear Accelerator Center, Stanford University
Mark J. Hogan: Stanford Linear Accelerator Center, Stanford University
Richard Iverson: Stanford Linear Accelerator Center, Stanford University
Pantaleo Raimondi: Stanford Linear Accelerator Center, Stanford University
Robert H. Siemann: Stanford Linear Accelerator Center, Stanford University
Dieter Walz: Stanford Linear Accelerator Center, Stanford University
Brent Blue: University of California
Christopher E. Clayton: University of California
Evan Dodd: University of California
Ricardo A. Fonseca: University of California
Roy Hemker: University of California
Chandrashekhar Joshi: University of California
Kenneth A. Marsh: University of California
Warren B. Mori: University of California
Shoquin Wang: University of California

Nature, 2001, vol. 411, issue 6833, 43-43

Abstract: Abstract The refraction of light at an interface is familiar as a rainbow or the 'bending' of a pencil in a glass of water. Here we show that particles can also be refracted and even totally internally reflected, as evidenced by an electron beam of 28.5 × 109 electron volts being deflected by more than a milli-radian upon exiting a passive boundary between a plasma and a gas — the electron beam is bent away from the normal to the interface, just like light leaving a medium of higher refractive index. This phenomenon could lead to the replacement of magnetic kickers by fast optical kickers in particle accelerators, for example, or to compact magnet-less storage rings in which beams are guided by plasma fibre optics.

Date: 2001
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DOI: 10.1038/35075144

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