The Plasma Parameters During the Inbound and Outbound Legs of the Giotto Trajectory
- Alan Johnstone
Published Online: 26 MAR 2013
Copyright 1991 by the American Geophysical Union.
Cometary Plasma Processes
How to Cite
Amata, E., Formisano, V., Torrente, P. and Giovi, R. (1991) The Plasma Parameters During the Inbound and Outbound Legs of the Giotto Trajectory, in Cometary Plasma Processes (ed A. Johnstone), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM061p0131
- Published Online: 26 MAR 2013
- Published Print: 1 JAN 1991
Print ISBN: 9780875900278
Online ISBN: 9781118663660
- Space plasmas;
New bulk speed, density and temperature values are presented for protons and water group ions based on the data of the two ion sensors of the Giotto JPA experiment. Two water group ion populations, implanted locally and further upstream, evolve with different density and temperature during the fly-by. In the inbound leg of the Giotto trajectory the centre of mass switches from the protons to the water group ions between 5.2×105 km and 4.8×105 km from closest approach and to the locally picked up ions between 4.7×105 km and 3.9×105 km; in the outbound leg the centre of mass switches to the water group ions between 3.3×105 km and 3×105 km and to the locally implanted ions around 2.9×105 km from the nucleus.