Ionization states of heavy elements observed in the 1974 May 14-15 anomalous solar particle event | Zendy

L. S. Ma Sung | Zendy; G. Gloeckler | Zendy; C. Y. Fan | Zendy; D. Hovestadt | Zendy

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Ionization states of heavy elements observed in the 1974 May 14-15 anomalous solar particle event

Author(s) -

L. S. Ma Sung,

G. Gloeckler,

C. Y. Fan,

D. Hovestadt

Publication year - 1981

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/183519

Subject(s) - physics , solar wind , solar energetic particles , ionization , coronal mass ejection , solar flare , ion , astrophysics , range (aeronautics) , atomic physics , plasma , event (particle physics) , helium , solar physics , interplanetary medium , astronomy , nuclear physics , interplanetary spaceflight , materials science , composite material , quantum mechanics

The charge states of heavy ions accelerated in the (3)He-Fe rich solar particle event of 1974 May 14-15 are determined using data from the Interplanetary Monitoring Platform-8. In addition to Fe(+11,12) both 0(+5) and Fe(+16,17,18) are also present suggesting variations in coronal temperatures over a range from approximately 400,000 to 5,000,000 K. The presence of 0(+5) and Fe(+16-18) may be explained by a resonant plasma heating mechanism proposed to account for the enhancements of (3)He and Fe.

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