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Proceedings Paper

Effect of the nonmonoenergetic beam on helical Cerenkov radiation
Author(s): Josip Z. Soln
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Paper Abstract

Modifications caused by the nonmonoenergetic beams to the recently described helical Cerenkov radiation (resulting from electron helical motion in a medium under the influence of magnetic field) are studied in a visible portion of the spectrum. The analysis is greatly simplified by utilizing a new analytical approximate expression for the number of emitted photons per unit path length for the usual 'monoenergetic' helical Cerenkov radiator. The effect of the nonmonoenergetic beam on the helical Cerenkov radiation is that, for the same visible frequency and the same radiation angle, the radiation may occur, in addition to through the the usual helical Cerenkov effect, also through harmonic radiation above and below the helical Cerenkov threshold. Harmonic radiators may enhance the usual helical Cerenkov radiation. For the medium of silica aerogel with the index of refraction of 1.075 and the beam energy in the 2-3 MeV range interacting with the magnetic field of about 10 tesla, one estimates that in the visible portion of the spectrum an electron from a nonmonoenergetic beam will generate between one and two photons at the end of the 10 cm interaction length.

Paper Details

Date Published: 8 September 1995
PDF: 7 pages
Proc. SPIE 2557, Intense Microwave Pulses III, (8 September 1995); doi: 10.1117/12.218561
Show Author Affiliations
Josip Z. Soln, Army Research Lab. (United States)


Published in SPIE Proceedings Vol. 2557:
Intense Microwave Pulses III
Howard E. Brandt, Editor(s)

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