The upper boundary of the ionosphere ( ionopause ) is near 250 km.
2.
Nearer to the surface, solar-wind dynamic pressure reaches a balance with the pressure from the ionosphere, in a region called the ionopause.
3.
Between the magnetopause and ionopause there exists a magnetic barrier a local enhancement of the magnetic field, which prevents solar plasma from penetrating deeper into the Venusian atmosphere, at least near eV respectively.
4.
Marconi et al . argue that a gas phase progenitor molecule for C 3 H is unlikely to exist within the ionopause and suggest that desorption from circumnuclear CHON dust grains may have instead produced the observed C 3 H.
5.
M . L Marconi and A . Korth et al . reported a likely detection of C 3 H within the ionopause of Comet Halley in 1989 . Using the heavy ion analyzer ( PICCA ) on board the Giotto spacecraft they determined that C 3 H was responsible for producing a peak at 37amu detected within ~ 4500 km of the comet nucleus.
मोबाइल