Remote sensing of low-energy SEPs via charge exchange

H.S. Hudson, A. L. MacKinnon, Nigel Badnell

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

Charge-exchange reactions at high energies provide new channels for the remote sensing of solar high-energy particles, as demonstrated by the recent detection of 1.8-5 MeV hydrogen atoms from a solar flare [1]. Orrall and Zirker [2] had earlier proposed the detection of low-energy protons via charge-exchange atomic reactions in the solar atmosphere, leading in the simplest case to extended red-wing emission in the Lyman-alpha line. We discuss the analogous process for the He II 304 Å line (for alpha particles) and also assess the feasibility of the analogous process in the solar wind, whereby ambient He and (C, N, O) ions allow low-energy alpha particles to undergo resonant charge exchange in the ambient corona and thereby produce 304 Å wing emission close to the acceleration region.
Original languageEnglish
Title of host publicationSolar Wind 13
Subtitle of host publicationProceedings of the Thirteenth International Solar Wind Conference
EditorsGary P. Zank, Joe Borovsky, Roberto Bruno, Jonathan Cirtain, Steve Cranmer, Heather Elliott, Joe Giacalone, Walter Gonzalez, Gang Li, Eckart Marsh, Ebehard Moebius, Nick Pogorelov, Jim Spann, Olga Verkhoglyadova
Pages19-21
Number of pages3
DOIs
Publication statusPublished - 13 Jun 2013
Event13th International Solar Wind COnference - Sheraton Keauhou Resort, Big Island, Hawaii, United States
Duration: 17 Jun 201222 Jun 2012

Publication series

NameAIP Conference Proceedings
PublisherAIP Publishing
Volume1539
ISSN (Print)0094-243X

Conference

Conference13th International Solar Wind COnference
Abbreviated titleSolar Wind 13
CountryUnited States
CityBig Island, Hawaii
Period17/06/1222/06/12

Keywords

  • flares
  • CMEs
  • solar energetic particles
  • remote sensing
  • uv spectroscopy
  • charge exchange

Projects

Cite this

Hudson, H. S., MacKinnon, A. L., & Badnell, N. (2013). Remote sensing of low-energy SEPs via charge exchange. In G. P. Zank, J. Borovsky, R. Bruno, J. Cirtain, S. Cranmer, H. Elliott, J. Giacalone, W. Gonzalez, G. Li, E. Marsh, E. Moebius, N. Pogorelov, J. Spann, & O. Verkhoglyadova (Eds.), Solar Wind 13: Proceedings of the Thirteenth International Solar Wind Conference (pp. 19-21). (AIP Conference Proceedings; Vol. 1539). https://doi.org/10.1063/1.4810979