Relationship between the relative helium abundance and the solar wind conditions from Prognoz-7 measurements.

Details Relationship between the relative helium abundance and the solar wind conditions from Prognoz-7 measurements. Relationship between the relative helium abundance and the solar wind conditions from Prognoz-7 measurements.

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991cosre..28..490e&link_type=abstract

Cosmic Res., Vol. 28, No. 4, p. 490 - 497

Physics

Solar Wind: Helium

Scientific paper

Selective measurements of the energy distributions of solar wind protons and α-particles made on the Prognoz-7 satellite are used to study the relationship between the relative abundance of α-particles and the hydrodynamic parameters of the solar wind. In the low-speed, cool, dense fluxes related to the closed coronal magnetic field configuration, the relative helium abundance increases with increasing speed and temperature and decreasing solar wind concentration, whereas in the high-speed, hot, tenuous fluxes related to the open coronal magnetic field configuration, the relative helium abundance decreases with increasing speed and temperature and decreasing concentration.

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