PHYSICS: NEW RESEARCH ON PHYSICS FROM A.A. SAHARIAN AND CO-AUTHORS SUMMARIZED
Science Letter
April 28, 2009
"In this paper, we investigate the radiation emitted by a charged
particle moving along a helical orbit around a dielectric cylinder
immersed in a homogeneous medium. Formulae are derived for the
electromagnetic potentials, electric and magnetic fields, and for
the spectral-angular distribution of the radiation in the exterior
medium," investigators in Yerevan, Armenia report (see also Physics).
"It is shown that under the Cherenkov condition for dielectric
permittivity of the cylinder and the velocity of the particle image
on the cylinder surface, strong narrow peaks appear in the angular
distribution for the number of quanta radiated on a given harmonic. At
these peaks the radiated energy exceeds the corresponding quantity
for a homogeneous medium by several dozen times. Simple analytic
estimates are given for the heights and widths of these peaks,"
wrote A.A. Saharian and colleagues.
The researchers concluded: "The results of numerical calculations for
the angular distribution of the radiated quanta are presented and they
are compared with the corresponding quantities for the radiation from a
charge moving along a helical trajectory inside a dielectric cylinder."
Saharian and colleagues published their study in the Journal of Physics
a – Mathematical and Theoretical (Synchrotron radiation from a charge
moving along a helix around a dielectric cylinder. Journal of Physics
a – Mathematical and Theoretical, 2009;42(13):35402).
For additional information, contact A.A. Saharian, Institute Applied
Problems Physics, Yerevan 0014, Armenia.
The publisher of the Journal of Physics a – Mathematical and
Theoretical can be contacted at: IOP Publishing Ltd., Dirac House,
Temple Back, Bristol BS1 6BE, England.
Keywords: Electromagnet, Electromagnetic, Electronics, Magnetic Field,
Physics, Synchrotrons.
This article was prepared by Science Letter editors from staff and
other reports. Copyright 2009, Science Letter via NewsRx.com.