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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 language | English |
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Title of host publication | Solar Wind 13 |
Subtitle of host publication | Proceedings of the Thirteenth International Solar Wind Conference |
Editors | Gary 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 |
Pages | 19-21 |
Number of pages | 3 |
DOIs | |
Publication status | Published - 13 Jun 2013 |
Event | 13th International Solar Wind COnference - Sheraton Keauhou Resort, Big Island, Hawaii, United States Duration: 17 Jun 2012 → 22 Jun 2012 |
Publication series
Name | AIP Conference Proceedings |
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Publisher | AIP Publishing |
Volume | 1539 |
ISSN (Print) | 0094-243X |
Conference
Conference | 13th International Solar Wind COnference |
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Abbreviated title | Solar Wind 13 |
Country/Territory | United States |
City | Big Island, Hawaii |
Period | 17/06/12 → 22/06/12 |
Keywords
- flares
- CMEs
- solar energetic particles
- remote sensing
- uv spectroscopy
- charge exchange
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