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Measurements of the ionic charge states of solar energetic particles at 15–70 MeV/nucleon using the geomagnetic field

Leske, R. A. and Cummings, J. R. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. (1996) Measurements of the ionic charge states of solar energetic particles at 15–70 MeV/nucleon using the geomagnetic field. In: High Energy Solar Physics. AIP conference proceedings. No.374. American Institute of Physics , Woodbury, NY, pp. 86-95. ISBN 1-56396-542-9 . http://resolver.caltech.edu/CaltechAUTHORS:20140226-091558357

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Abstract

The mean charge states of abundant heavy ions with ∼15–70 MeV nucleon ^(−1) in the two large solar energetic particle events of 1992 October 30 and November 2 have been determined using measurements of the invariant latitude of the cosmic ray geomagnetic cutoffs as a function of time, particle energy, and element from the Mass Spectrometer Telescope on the polar‐orbiting SAMPEX satellite. The deduced charge state values are in good agreement with the mean values measured directly in previous solar energetic particle events at much lower energies of ∼1 MeV nucleon ^(−1), with inferred equilibrium source temperatures of typically 2×10^6 K. This result provides additional evidence that solar energetic particles in gradual‐type events consist of accelerated coronal material.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.50991DOIArticle
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.50991PublisherArticle
Additional Information:© 1996 American Institute of Physics. This work was supported by NASA under contract NAS5-30704 and grant NAGW-1919.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAS5-30704
NASANAGW-1919
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1995-45
Record Number:CaltechAUTHORS:20140226-091558357
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140226-091558357
Official Citation:Measurements of the ionic charge states of solar energetic particles at 15–70 MeV/nucleon using the geomagnetic field Leske, R. A. and Cummings, J. R. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T., AIP Conference Proceedings, 374, 86-95 (1996), DOI:http://dx.doi.org/10.1063/1.50991
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44003
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Mar 2014 21:02
Last Modified:25 Jun 2014 16:43

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