Imperial College London

ProfessorMarinaGaland

Faculty of Natural SciencesDepartment of Physics

Professor in Planetary Science
 
 
 
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Contact

 

m.galand Website

 
 
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Location

 

Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

131 results found

Galand M, Richmond AD, 1999, Magnetic mirroring in an incident proton beam, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 4447-4455, ISSN: 0148-0227

Journal article

Galand M, Lilensten J, Kofman W, Lummerzheim Det al., 1998, Proton transport model in the ionosphere. 2. Influence of magnetic mirroring and collisions on the angular redistribution in a proton beam, ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES, Vol: 16, Pages: 1308-1321, ISSN: 0992-7689

Journal article

Lilensten J, Galand M, 1998, Proton-electron precipitation effects on the electron production and density above EISCAT (Tromso) and ESR, ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES, Vol: 16, Pages: 1299-1307, ISSN: 0992-7689

Journal article

Lilensten J, Galand M, 1998, Proton-electron precipitation effects on the electron production and density above EISCAT (Tromsø) and ESR, Annales Geophysicae, Vol: 16, Pages: 1299-1307, ISSN: 0992-7689

The suprathermal particles, electrons and protons, coming from the Sun and precipitating into the high-latitude atmosphere are an energy source for the Earth's ionosphere. They interact with the ambient thermal gas through inelastic and elastic collisions. Most of the physical quantities perturbed by the precipitation, such as the electron production rate, may be evaluated by solving the stationary Boltzmann transport equation, which yields the particle fluxes as a function of altitude, energy, and pitch angle. This equation has been solved for the three different suprathermal species (electrons, protons and hydrogen atoms). We first compare the results of our theoretical code to a coordinated DMSP/EISCAT experiment, and to another approach. Then, we show the effects that pure proton precipitation may have on the ionosphere, through primary and secondary ionization. Finally, we compare the effects of proton precipitation and electron precipitation in some selected cases above EISCAT (Tromsø) and ESR.

Journal article

Galand M, Lilensten J, Kofman W, Sidje RBet al., 1997, Proton transport model in the ionosphere .1. Multistream approach of the transport equations, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 102, Pages: 22261-22272

Journal article

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