A Caltech Library Service

SAMPEX Observations of Anomalous Cosmic Rays Trapped in the Magnetosphere

Mewaldt, R. A. and Cummings, A. C. (1993) SAMPEX Observations of Anomalous Cosmic Rays Trapped in the Magnetosphere. STEP International, 3 (10). pp. 1-4.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


The Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX), launched July 3, 1992, into an 82 degree inclination, low-Earth orbit (670 x 520 km), is the first of NASA's new line of Small Explorer (SMEX) missions. SAMPEX has been described in U.S. STEP News, Vol. 1, No. 6, December 1991. The spacecraft carries four instruments designed to measure the composition of energetic nuclei and electrons over a broad range in energy and intensity, including particles of solar, interplanetary, galactic, and magnetospheric origin. A detailed description of the spacecraft and these instruments is given in the May 1993 issue of Geoscience and Remote Sensing. Of the many studies that SAMPEX has conducted during its first year of operation, one of the most interesting has been of a trapped radiation belt encircling the Earth that contains high-energy N, 0, and Ne nuclei from the local interstellar medium. These observations, along with earlier work from a series of COSMOS satellites, confirm a prediction made more than a decade ago. The process by which interste1lar material finds its way into the magnetosphere involves a rather fascinating series of steps.

Item Type:Article
Mewaldt, R. A.0000-0003-2178-9111
Cummings, A. C.0000-0002-3840-7696
Additional Information:Solar-Terrestrial Energy Program (STEP). A USSCO Publication Supported by SCOSTEP, IRF, STELAB, and RUSCO. U.S. STEP Coordination Office Dr. M. Teague USRA. Mail Code 610.3 Building 26, Room 129 NASA/Goddard Space Flight Center Greenbelt, Matyland 20771, U.S.A. Telephone: 0101 (301) 286-4232 Fax:0101 (301)286·1773 E·Mail: NSSOCA::TEAGUE (NSVOECnet) TEAGUE@NSSOCA.GSFC.NASA.GOV (Internet)
Group:Space Radiation Laboratory
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1993-36
Issue or Number:10
Record Number:CaltechAUTHORS:20140520-095742074
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45841
Deposited By: Deborah Miles
Deposited On:15 Jun 2014 18:06
Last Modified:20 Feb 2020 14:33

Repository Staff Only: item control page