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Isotopic Composition of the Anomalous Low Energy Cosmic Ray Nitrogen and Oxygen

Mewaldt, R. A. and Stone, E. C. and Vidor, S. B. and Vogt, R. E. (1975) Isotopic Composition of the Anomalous Low Energy Cosmic Ray Nitrogen and Oxygen. In: Proceedings of the 14th International Cosmic Rays Conference. Vol.1. Max Planck Gesellschaft , pp. 349-354. http://resolver.caltech.edu/CaltechAUTHORS:20140410-104006679

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Abstract

The isotopic composition of the enhanced fluxes of cosmic ray nitrogen and oxygen observed below 30 MeV/nuc is of interest, whether the nuclei are a sample from some nearby galactic source region that is underabundant in carbon, or a sample of the neutral interstellar medium. Enhanced fluxes in the 6 to 12 MeV/nuc energy interval were measured over a two year period with the Caltech Electron/Isotope Spectrometer on IMP-7. The observed low-energy nitrogen and oxygen nuclei are predominantly N-14 and O-16, with upper limits (84% confidence level) of N-15/N below 0.26, O-17/0 below 0.13, and O-18/0 below 0.12 for other isotopes in the 6-12 MeV/nuc energy interval. The implications of these results for the origin of the enhanced nitrogen and oxygen fluxes are discussed.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://adsabs.harvard.edu/abs/1975ICRC....1..349MADSArticle
Contact Email Address:dmiles@caltech.edu
Group:Space Radiation Laboratory
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1975-07
Record Number:CaltechAUTHORS:20140410-104006679
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140410-104006679
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44853
Collection:CaltechAUTHORS
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Deposited On:14 Apr 2014 23:17
Last Modified:14 Apr 2014 23:17

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