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Coordinates for Mapping the Distribution of Magnetically Trapped ParticlesDipole representations of the earth's magnetic field have been found to have insufficient accuracy for the study of magnetically trapped particles. A coordinate system consisting of the magnitude of the magnetic field B, and the integral invariant I has been found to adequately organize, measurements made at different geographic locations. It is shown in the present paper, that a parameter L = f(B,I) can be defined which retains most of the desirable properties of I and which has the additional property of organizing measurements along lines of force. Since the parameter L is the analog of a physical distance in a dipole field (the equatorial radius of a magnetic shell), it is usually found to present fewer conceptual difficulties than the integral invariant I.
Document ID
20150019302
Acquisition Source
Headquarters
Document Type
Other
Authors
McIlwain, Carl E. (State Univ. of Iowa Iowa City, IA, United States)
Date Acquired
October 13, 2015
Publication Date
August 1, 1961
Subject Category
Physics Of Elementary Particles And Fields
Funding Number(s)
CONTRACT_GRANT: N9onr 93803
CONTRACT_GRANT: NASw-17
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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