Abstract
The solar diurnal anisotropy of the cosmic-ray albedo neutron flux has been measured by a neutron detector on board the OGO-6 satellite. On the average the diurnal amplitudes and phases of the cosmic ray albedo neutron flux (≤10 MeV) were respectively 0.18 (±0.02)% and 15(±1) hr LT though there were substantial fluctuations of a few days duration which did not depend on the solar sector structure polarity and a 27-day periodicity in the diurnal amplitudes which was associated with the Sun's rotation.
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Ifedili, S.O. Measurement of the solar diurnal anisotropy of the cosmic-ray albedo neutron flux. Sol Phys 76, 393–398 (1982). https://doi.org/10.1007/BF00170994
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DOI: https://doi.org/10.1007/BF00170994