Cyclotron radiation emission spectroscopy (CRES) is a modern technique for high-precision
energy spectroscopy, in which the energy of a charged particle in a magnetic field is measured via
the frequency of the emitted cyclotron radiation. The He6-CRES collaboration aims to use CRES
to probe beyond the standard model physics at the TeV scale by performing high-resolution and
low-background beta-decay spectroscopy of 6He and 19Ne. Having demonstrated the first
observation of individual, high-energy (0.1–2.5 MeV) positrons and electrons via their cyclotron
radiation, the experiment provides a novel window into the radiation of relativistic charged
particles in a waveguide via the time-derivative (slope) of the cyclotron radiation frequency, dfc/dt.
We show that analytic predictions for the total cyclotron radiation power emitted by a charged
particle in circular and rectangular waveguides are approximately consistent with the Larmor
formula, each scaling with the Lorentz factor of the underlying e± as ?4. This hypothesis is
corroborated with experimental CRES slope data.
Published: September 25, 2024
Citation
Buzinsky N., R. Taylor, W. Byron, W. Degraw, B. Dodson, M. Fertl, and A. Garcia, et al. 2024.Larmor power limit for cyclotron radiation of relativistic particles in a waveguide.New Journal of Physics 26, no. 8:Art. No. 083021.PNNL-SA-203843.doi:10.1088/1367-2630/ad6d85