Spontaneous radiation from relativistic electrons in a tapered undulator

1983 ◽  
Vol 28 (1) ◽  
pp. 319-327 ◽  
Author(s):  
P. Bosco ◽  
W. B. Colson
Author(s):  
J. H. Butler ◽  
C. J. Humphreys

Electromagnetic radiation is emitted when fast (relativistic) electrons pass through crystal targets which are oriented in a preferential (channelling) direction with respect to the incident beam. In the classical sense, the electrons perform sinusoidal oscillations as they propagate through the crystal (as illustrated in Fig. 1 for the case of planar channelling). When viewed in the electron rest frame, this motion, a result of successive Bragg reflections, gives rise to familiar dipole emission. In the laboratory frame, the radiation is seen to be of a higher energy (because of the Doppler shift) and is also compressed into a narrower cone of emission (due to the relativistic “searchlight” effect). The energy and yield of this monochromatic light is a continuously increasing function of the incident beam energy and, for beam energies of 1 MeV and higher, it occurs in the x-ray and γ-ray regions of the spectrum. Consequently, much interest has been expressed in regard to the use of this phenomenon as the basis for fabricating a coherent, tunable radiation source.


1983 ◽  
Vol 140 (8) ◽  
pp. 687 ◽  
Author(s):  
Vitalii L. Ginzburg

1989 ◽  
Vol 157 (3) ◽  
pp. 389 ◽  
Author(s):  
D.F. Alferov ◽  
Yu.A. Bashmakov ◽  
P.A. Cherenkov

2020 ◽  
Vol 128 (11) ◽  
pp. 1857-1864
Author(s):  
R. M. Arkhipov ◽  
M. V. Arkhipov ◽  
I. Babushkin ◽  
A. V. Pakhomov ◽  
N. N. Rosanov

2011 ◽  
Author(s):  
G. G. Manahan ◽  
E. Brunetti ◽  
R. P. Shanks ◽  
M. R. Islam ◽  
B. Ersfeld ◽  
...  

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