On the charge state of the anomalous oxygen component

Details On the charge state of the anomalous oxygen component On the charge state of the anomalous oxygen component

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7.1033k&link_type=abstract

Geophysical Research Letters, vol. 7, Dec. 1980, p. 1033-1036.

Physics

14

Cosmic Rays, Galactic Radiation, Oxygen, Phase Deviation, Energetic Particles, Hysteresis, Neutron Counters, Solar Activity

Scientific paper

Observations of a phase lag between the intensity variations of high-energy galactic cosmic rays and the quiet-time oxygen flux in the energy region 7.6-24 MeV/nucleon during the time period 1974-1975 are reported. Phase lag or hysteresis effects have been observed during the 11-year solar cycle for low-energy galactic cosmic rays and several authors have shown that this hysteresis effect is a function of the velocity and rigidity (and therefore of the ionic charge) of the particles. Assuming a similar rigidity dependence of the phase lag during the transient intensity decrease of both galactic cosmic rays and the anomalous oxygen component in the time period 1974-1975, and comparing the phase lag as observed for protons and helium during the same period with the oxygen measurements, an upper limit of approximately 4 is derived for the ionic charge of the anomalous oxygen component.

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