期刊
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
卷 110, 期 A12, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2005JA011250
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[1] The differential energy spectrum of galactic cosmic rays in the vicinity of the Earth can be parameterized by the so-called force field model which has only one parameter, the modulation potential phi, for a given local interstellar spectrum. Here we present the series of monthly values of the modulation potential f since February 1951, reconstructed using the data from the worldwide neutron monitor network and calibrated with precise balloon and space-borne direct measurements of cosmic ray energy spectrum. This work provides a long series of a parameter allowing for a quantitative estimate of the average monthly differential energy spectrum of cosmic rays near the Earth. A comparison with other occasional direct measurements of cosmic ray spectra confirms the reliability of the present reconstruction. The results can be applied in studies of long-term solar-terrestrial relations and the global evolution of the heliosphere.
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