electron number density

Zhelavskaya, I., Spasojevic, M., Shprits, Y. . Y., & Kurth, W. (2016). Automated determination of electron density from electric field measurements on the Van Allen Probes spacecraft. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2015JA022132 (Original work published May 2016)