Publications by authors named "John C Dorelli"
Turbulence is a fundamental physical process through which energy injected into a system at large scales cascades to smaller scales. In collisionless plasmas, turbulence provides a critical mechanism for dissipating electromagnetic energy. Here we present observations of plasma fluctuations in low- turbulence using data from NASA's Magnetospheric Multiscale mission in Earth's magnetosheath.
View Article and Find Full Text PDFAlfvén waves are fundamental plasma wave modes that permeate the universe. At small kinetic scales, they provide a critical mechanism for the transfer of energy between electromagnetic fields and charged particles. These waves are important not only in planetary magnetospheres, heliospheres and astrophysical systems but also in laboratory plasma experiments and fusion reactors.
View Article and Find Full Text PDFArticle Synopsis
- The study compares geometric factors (GF) from computer simulations and lab measurements for NASA's new Dual Electron Spectrometer (DES) used in the Magnetospheric Multiscale mission.
- Particle simulations are crucial in designing and calibrating electrostatic analyzers, as they help to identify and reduce systematic errors common in lab settings.
- The researchers derived new equations for calculating GF and demonstrated their applicability to the DES instrument, showing consistent results between simulations and laboratory measurements.