Publications by authors named "Alexander Barrie"
When incorporated into a top-hat electrostatic analyzer, a gate electrode enables the separation of ions by their mass-per-charge with modest mass resolution (M/∆M ∼ 10). Gated-time-of-flight (TOF) instruments avoid the energy straggling and angular scattering effects prevalent in foil-based detection systems, providing more pristine measurements of three-dimensional distribution functions of incident ions. Gated-TOF implementations are ideal for measuring the properties of low-energy (i.
View Article and Find Full Text PDFAs space-based charged particle measurement pushes the technical envelope, resolution, both spatially and temporally, is ever improving. As such, the knowledge of the associated error must also improve. We present a method for correlating data collected from multiple sensors at different times in order to estimate the pointing error of each sensor.
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.