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Event-to-event variations in the isotopic composition of neon in solar energetic particle events

Leske, R. A. and Mewaldt, R. A. and Cohen, C. M. S. and Cummings, A. C. and Stone, E. C. and Wiedenbeck, M. E. and Christian, E. R. and von Rosenvinge, T. T. (1999) Event-to-event variations in the isotopic composition of neon in solar energetic particle events. Geophysical Research Letters, 26 (17). pp. 2693-2696. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20140828-090809602

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Abstract

Using the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have measured the isotopic composition of neon at 24–72 MeV/nucleon in nine solar energetic particle events between 4 November 1997 and 16 November 1998. The ^(22)Ne/^(20)Ne ratio varies from ∼0.7 to ∼2 times the solar wind value from event to event, indicating significant mass fractionation in the acceleration and/or transport of these particles. The mass fractionation is strongly correlated with the Fe/O and Na/Mg element abundance ratios, suggesting that elemental and isotopic fractionation are both governed by the ionic charge to mass ratio.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/1999GL900561DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/1999GL900561/abstractPublisherArticle
ORCID:
AuthorORCID
Leske, R. A.0000-0002-0156-2414
Mewaldt, R. A.0000-0003-2178-9111
Cohen, C. M. S.0000-0002-0978-8127
Cummings, A. C.0000-0002-3840-7696
Stone, E. C.0000-0002-2010-5462
Wiedenbeck, M. E.0000-0002-2825-3128
Christian, E. R.0000-0003-2134-3937
Additional Information:© 1999 The American Geophysical Union. Received May 19, 1999; Accepted June 23, 1999. Paper number 1999GL900561. This research was supported by NASA at the California Institute of Technology (under grant NAG5-6912), the Jet Propulsion Laboratory, and the Goddard Space Flight Center. We are grateful to the large group of dedicated and talented individuals who made the ACE mission possible and contributed to the development of the SIS instrument (as acknowledged in Stone et al., [1998]).
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAG5-6912
JPLUNSPECIFIED
Goddard Space Flight CenterUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1999-60
Issue or Number:17
Record Number:CaltechAUTHORS:20140828-090809602
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140828-090809602
Official Citation:Leske, R. A., Mewaldt, R. A., Cohen, C. M. S., Cummings, A. C., Stone, E. C., Wiedenbeck, M. E., . . . von Rosenvinge, T. T. (1999). Event-to-event variations in the isotopic composition of neon in solar energetic particle events. Geophysical Research Letters, 26(17), 2693-2696. doi: 10.1029/1999gl900561
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49018
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:28 Aug 2014 17:43
Last Modified:09 Mar 2020 13:19

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