Seminars

Lecturer: M. Yamauchi (IRF)
Date: 2006-05-04 10:00
Place: Aniara

Roles of ion state and plasma on evolution of planet and biosphere

M. Yamauchi and J.-E. Wahlund
Swedish Institute of Space Physics

Abstract.
During the evolution of biosphere in the ancient Earth and possibly Venus and Mars, ionized state of atoms and molecules could have played important roles. We consider three episodes for possible roles of ionized (plasma) state.

First episode is the determination of initial atmospheric composition by the interaction between the ionosphere and magnetized solar wind. The second episode is the chirality formation by the asymmetric chemical reactions of ionized molecules in the ionosphere or under the shallow water. The third episode is the atmospheric evolution by the non-thermal dynamics of ions.

Presentation in ppt-format [1.8 MB]. Intranet access only.


Created 2006-04-27 12:51:47 by Mats Holmström
Last changed 2006-05-05 08:23:46 by Mats Holmström