Transport of solar wind H+ and He++ ions across earth's bow shock
Parks, G. K.; Lee, E.; Fu, S. Y.; Kim, H. E.; Ma, Y. Q.; Yang, Z. W.; Liu, Y.; Lin, N.; Hong, J.; Canu, P.; Dandouras, I.; Rème, H.; Goldstein, M. L.
The Astrophysical Journal Letters, Volume 825, Issue 2, article id. L27, 7 pp. (2016). (ApJL Homepage)