Vortex dynamics in superfluids is investigated in the framework of the nonlinear Schrödinger equation. The natural motion of the vortex is of cyclotron type, whose frequency is found to be on the order of phonon velocity divided by the coherence length, and may be heavily damped due to phonon radiation. Trapping foreign particles into the vortex core can reduce the cyclotron frequency and make ...

In order to study and optimize the ion source and injection system of our multiple cyclotron products, Best Cyclotron Systems Inc. (BCSI) has assembled in its Vancouver office a 1 MeV cyclotron development platform. To accommodate different injection line configurations, the main magnet median plane is vertically oriented and rail mounted which also allows easy access to the inner components. I...

Title: STOCHASTIC ELECTRON TRAJECTORIES AND WAVE INTERACTION IN RELATIVISTIC GYRO-TRAVELING-WAVE AMPLIFIERS. Roland Ngogang, Master of Science, 2005 Directed By: Professor Victor L. Granatstein, Department of Electrical Engineering Gyro-traveling-wave amplifiers (gyro-TWAs) are types of gyrodevices, which take advantage of the cyclotron maser instability to produce coherent electromagnetic (EM)...

We present Spitzer Infrared Spectrograph (IRS) observations of eleven intermediate polars (IPs). Spectra covering the wavelength range from 5.2 to 14 μm are presented for all eleven objects, and longer wavelength spectra are presented for three objects (AE Aqr, EX Hya, and V1223 Sgr). We also present new, moderate resolution (R ∼ 2000) near-infrared spectra for five of the program objects. We f...

Enhancement of cyclotron damping is theoretically evaluated based upon the wave E-field polarization which is modified by the two-ion hybrid resonance. The degree of enhancement and its asymmetry about the plasma center is consistent with experimental observations. The enhancement factor is very large at low plasma densities at which most of the past damping strength measurements have been repo...

The core of Radiopharmaceuticals Research Centre, CCR, is represented by a TR19 cyclotron (Advanced Cyclotron Systems Inc.), a versatile and fully automated and computer controlled machine. This cyclotron accelerates negative ions (H), on a vertically arranged plane, up to 19 MeV energy, and is provided with two external beam lines and dual extraction capabilities. The main use is for the produ...

We present a new approximation for the frequencies where electron-cyclotron-maser is produced by a loss-cone distribution. This approximation is fully relativistic, and is good also for masering frequencies far from the cyclotron harmonics.

We have performed cyclotron resonance measurements on two-dimensional electrons in the metallic phase. The temperature, electron density and in-plane magnetic field dependence of cyclotron and transport scattering time are reported for a high-mobility Si/SiGe quantum well.

The 88-Inch Cyclotron began regular operation with the ECR (Electron Cyclotron Resonance) source in January 1985. Since then about 80% of the cyclotron operating schedule has been with the ECR source. The light-ion filament source is used only for runs two or more shifts in length using proton, deuteron, 3He, or alpha beams. Occasionally the polarized ion source is used. The heavy-ion PIG sourc...