Electron density estimations derived from spacecraft potential measurements on Cluster in tenuous plasma regions

Pedersen, A., B. Lybekk, M. André, A. Eriksson, P.-A. Lindqvist F. Mozer, P. M. E. Décréau, A. Masson, H. Laakso, H. Rème, J.-A. Sauvaud, A. Fazakerley, K. Svenes, G. Paschmann, K. Torkar and E. Whipple, Electron density estimations derived from spacecraft potential measurements on Cluster in tenuous plasma regions, J. Geophys. Res., in press, 2008, doi:10.1029/2007JA012636