Current-driven electromagnetic ion cyclotron instability at substorm onset

Alfven Cyclotron Instability and Ion Cyclotron Emission

Two-dimensional solutions of compressional Alfven eigenmodes (CAE) are studied in the cold plasma approximation. For finite inverse aspect ratio tokamak plasmas the two-dimensional eigenmode envelope is localized at the low magnetic field side with the radial and poloidal localization on the order of u / f i and u/*, respectively, where rn is the dominant poloidal mode number. Charged fusion pr...

Mirror instability and L-mode electromagnetic ion cyclotron instability: Competition in the Earth's magnetosheath

Pulsed electromagnetic field at frequency and intensity resembling potassium ion cyclotron resonance selectively impairs breast cancer cell through apoptosis

Introduction: Breast cancer (BC) is the most common women cancer worldwide. Radiotherapy and chemotherapy are the two common treatment options but these techniques suffer low selectivity and adverse effects on surrounding normal tissues. Non- ionizing pulsed electromagnetic fields (PEMFs) in ultra-narrow band frequency and intensity have shown anticancer effects. Changing potas...

A Kinetic M-i Coupling Model with Unloading Instability at Onset of Substorm

Onset of substorm due to unloading instability is proposed in this paper based on a kinetic M-I coupling model. Nonadiabatic motion of energetic ions in the near Earth plasma sheet can lead to an effective Hall conductivity in the plasma sheet similar to the Hall conductivity in the E-region ionosphere. Hall conductivity can lead to left-hand rotation of electric field with respect to the backg...

Dispersion relation of electromagnetic ion cyclotron waves using Cluster observations

Multi-point wave observations on Cluster spacecraft are used to infer the dispersion relation of electromagnetic ion cyclotron (EMIC) waves. In this study we use a phase differencing method and observations from STAFF and WHISPER during a well-studied event of 30 March 2002. The phase differencing method requires the knowledge of the direction of the wave vector, which was obtained using minimu...