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The Isotopic Composition of Anomalous and Galactic Cosmic Rays from SAMPEX

Leske, R. A. and Cummings, A. C. and Cummings, J. R. and Mewaldt, R. A. and Stone, E. C. and von Rosenvinge, T. T. (1995) The Isotopic Composition of Anomalous and Galactic Cosmic Rays from SAMPEX. In: Proceedings of the 24th International Cosmic Ray Conference. Vol.2. International Union of Pure and Applied Physics , pp. 606-609. http://resolver.caltech.edu/CaltechAUTHORS:20140616-161605497

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Abstract

New measurements of the anomalous cosmic ray (ACR) isotopic composition are presented, using data from the Mass Spectrometer Telescope (MAST) on SAMPEX. At high invariant latitudes or in interplanetary space, ACR isotopic composition measurements require correction for contamination from galactic cosmic rays (GCRs); however, at lower latitudes singly-charged ACRs can penetrate the Earth's magnetic field while fully stripped GCRs of similar energies are excluded, allowing us to study a pure ACR sample. Preliminary values for ACRs obtained using this geomagnetic filter approach are: ^(15)N /N < 0.032, ^(18)0/^(16)0 < 0.0057, and ^(22)Ne = ^(20)Ne = 0.087(+0.137, -0.026). We compare our values with those found by previous investigators and with those measured in other samples of solar and galactic material.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://adsabs.harvard.edu/full/1995ICRC....2..606LADSArticle
Additional Information:© IUPAP. Provided by the NASA Astrophysics Data System. 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 Laboratory1995-15
Record Number:CaltechAUTHORS:20140616-161605497
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140616-161605497
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46286
Collection:CaltechAUTHORS
Deposited By: Deborah Miles
Deposited On:18 Jun 2014 02:15
Last Modified:18 Jun 2014 02:15

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