The spectrum of cyclotron radiation produced by electrons with a strongly anisotropic velocity distribution is calculated taking into account higher harmonics. The motion of the electrons is assumed to be ultrarelativistic along the magnetic field and nonrelativistic across the field. One characteristic feature of the resulting spectrum is that harmonics of various orders are not equally spaced...

Modern high intensity commercial cyclotron systems are continuously being improved to achieve higher beam power, reliability and ease of operation. Other factors playing a part in the ongoing development of commercial cyclotrons include the need for lower radiation dose to personnel, flexibility of operation (multiple beams, variable energy), and the desire to minimize the routine maintenance r...

The presence of turbulence in the form large density fluctuations and coherent filamentary structures edge region fusion plasmas has been well documented. Radio frequency waves, launched from near wall a tokamak, have to propagate through this turbulent plasma before reaching core. These can reflect, refract, diffract electromagnetic thereby modifying flow energy momentum core plasma. Conversel...

Abstract Research at the Oslo Cyclotron Laboratory University of is focused on spectroscopy experiments for nuclear structure and astrophysics using Scintillator Array OSCAR. Light-ion beams from $$K=35$$ K=35 cyclotron are furthermore used studies in radia...

We report on radio observations of the M8.5 dwarf LSR J1835+3259 and the L3.5 dwarf 2MASS J00361617+1821104, which provide the strongest evidence to date that the electron cyclotron maser instability is the dominant mechanism producing radio emission in the magnetospheres of ultracool dwarfs. As has previously been reported for the M9 dwarf TVLM 513-46546, periodic pulses of 100% circularly pol...

It is found that 1E 1207.4-5209 could be a low-mass bare strange star if its small radius or low altitude cyclotron formation can be identified. The age problems of five sources could be solved by a fossil-disk-assisted torque. The magnetic dipole radiation dominates the evolution of PSR B1757-24 at present, and the others are in propeller (or tracking) phases.

We report theoretical and experimental results on the radiation pattern of the ion acoustic waves below the ion cyclotron frequency from a small probe in a streaming magnetoplasma. In the fluid approximation with cold ions the ion acoustic resonance cones are found to be drastically changed. Experimental ray velocities and constant phase surfaces are in good agreement with the theoretical results.

The introduction of a strongly magnetized plasma in the inner region of a Free Electron Laser opens up the possibility of generating coherent radiation in the slow whistler mode using mildly relativistic electron beams. The frequency of emission, however, is limited to below the electron cyclotron frequency. The efficiency of the device can be enhanced by tapering the guide magnetic field.