Abstract Solar radio zebras are used in the determination of plasma density and magnetic field solar flare plasmas. Analyzing observed zebra stripes assuming their generation by double-plasma resonance (DPR) instability, high values gyro-harmonic number found. In some cases they exceed one hundred, disagreement with DPR growth rates computed up to now, which decrease increasing number. We addre...

This paper presents a comparison between two approaches to sensor dibration. A c c o r d i to one approach, cnlled explicit, an estimator compares the sensor readiags to reference rendings, auad uses the difference between the two to estimate the calibration parameters. Accordii to the other approach, called implicit, the sensor error is integrated to form a different entity, which is then comp...

Solitary magnetic structures known as SLAMS (short large-amplitude structures) have been considered essential elements of collisionless shocks with quasi-parallel geometries. Yet the physics underlying their formation remains an open question. In this paper, we use measurements from magnetospheric multiscale mission combined fully kinetic simulations to study SLAMS. We find that gyro-resonance ...

Abstract The HE 11 hybrid mode, propagating in an overmoded corrugated circular waveguide, is widely used for low loss transmission of high-power microwaves. Due to the inherent broadband frequency behaviour, this will be also essential future radar applications, like space debris observation earth orbit (LEO). A promising amplifier concept such sensors a helical gyro-TWT. However, since mode n...

An upgraded phase contrast imaging (PCI) diagnostic is used to study turbulence and transport in Alcator C-Mod. The upgraded PCI system is capable of measuring density fluctuations with high temporal (2 kHz-5 MHz) and wavenumber (0.5-55 cm) resolution. An upgrade of the system has enabled PCI to localize the short wavelength turbulence in the electron temperature gradient (ETG) range and resolv...

We examine the convergence of particle-based nonlinear \gyrokinetic simulations" of ion-temperature-gradient (ITG) turbulence [1] with respect to numerical parameters. Our main focus is on convergence with respect to particle number, both through direct particle number scans and through \scrambling tests" that determine the relative e ect of the noise due to particle discreteness. Results will ...

The manuscript discusses still preliminary considerations with regard to the dynamics and kinematics of an egg shaped robot with an gyro driven inertia actuator. The method of calculation follows the idea that we would like to express the entire dynamic equations in terms of moments instead of forces. Also we avoid to derive the equations from a Lagrange function with constraints. The result of...