Effect of harmonics coherence in resonant transition radiation

Lekdar Gevorgian

doi:10.1117/12.741929

2 May 2007 Effect of harmonics coherence in resonant transition radiation

Lekdar Gevorgian

Proceedings Volume 6634, International Conference on Charged and Neutral Particles Channeling Phenomena II; 663413 (2007) https://doi.org/10.1117/12.741929
Event: International Conference on Charged and Neutral Particles Channeling Phenomena II, 2006, Rome, Italy

Abstract

In the present work an essential difference is revealed between the undulator and transition radiation processes. In the first case emission of a photon occurs at a certain angle, while in the second case radiation takes place with equal probability in both dense and dilute parts of the medium and at various angles. These angles are different for different harmonics and their angular widths, which determine the frequency spectrum of radiation, do not depend on the harmonic number. The higher harmonic the wider the frequency ranges of emission. The weighting function of overlap of the harmonic spectra has a sharp peak in the soft range of frequencies. The peak increases and its width quadratic decreases depending on the electron energy. Therefore, the number of emitted soft photons does not depend on the energy and quadratic depends on the number of harmonics. A new physical phenomenon has been revealed: coherent emission of harmonics in the soft frequency range. Thus, it is possible to obtain intense beams of soft photons using high-current electron bunches.

Citation Download Citation

Lekdar Gevorgian "Effect of harmonics coherence in resonant transition radiation", Proc. SPIE 6634, International Conference on Charged and Neutral Particles Channeling Phenomena II, 663413 (2 May 2007); https://doi.org/10.1117/12.741929

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available