Concerning the problem of collisional heating of the interstellar helium flow by solar wind protons

Details Concerning the problem of collisional heating of the interstellar helium flow by solar wind protons Concerning the problem of collisional heating of the interstellar helium flow by solar wind protons

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986p%26ss...34..387g&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 34, April 1986, p. 387-389.

Physics

1

Elastic Scattering, Gas Heating, Helium, Interstellar Gas, Plasma-Particle Interactions, Solar Protons, Solar Wind, Gas Flow, Heliosphere, Momentum Transfer

Scientific paper

In the past heating by elastic collisions with the solar wind protons of the interstellar helium flow into the heliosphere has been a subject of consideration by several authors. The approaches used in this context are critically analysed in this paper and it is shown that the concept of a continuous momentum transfer is not likely to be applicable. It is argued in contrast that large angle deflections though being rare events give the predominant contributions to the momentum transfer to the neutral helium atoms. This may have consequences for a progressed modelling of the interstellar helium distribution in the heliosphere.

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