Whitepaper #136 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research; infrastructure/workforce/other programmatic. Additional topics: ground-based missions/projects; space-based missions/projects; fundamental space plasma […]
O+ velocity distribution distortions are a known result of O+-O collisions, yet the cross-section between these species (and thus the momentum transfer collision frequency) is not known. This white paper calls for an examination of the O+-O collision cross-section and the collision frequency vertical profile using ground-based and space-based (e.g. GDC, DYNAMIC, Daedalus, ASTRE) instrumentation.