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Preprints
https://doi.org/10.5194/angeo-2020-72
https://doi.org/10.5194/angeo-2020-72
16 Dec 2020
 | 16 Dec 2020
Status: this preprint has been withdrawn by the authors.

Dynamics of He++ ions at interplanetary shocks

Olga V. Sapunova, Natalia L. Borodkova, Georgii N. Zastenker, and Yuri I. Yermolaev

Abstract. Variations of parameters of twice-ionized helium ions – He++ ions or α-particles – in the solar wind plasma during the interplanetary shock front passage are investigated. We used the data measured by the BMSW (Bright Monitor of Solar Wind) instrument installed on the SPEKTR-R satellite, which operated since August 2011 to 2019 and registered 57 interplanetary shocks. According to received data, the parameters of He++ ions were calculated: velocity Vα, temperature Tα, absolute density Nα and relative density (helium abundance) Nα/Np. The correlation of changes in helium abundance Nα/Np with the parameters βi, θBn and MMS were investigated.

This preprint has been withdrawn.

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This preprint has been withdrawn.

Short summary
The collisionless shocks are very complicated and important field of nowadays researches. We...
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