论文信息 - Evidence for trapped anomalous cosmic ray oxygen ions in the inner magnetosphere

Evidence for trapped anomalous cosmic ray oxygen ions in the inner magnetosphere

A series of measurements of 5–30 MeV/nucleon oxygen ions made with track detector stacks on Cosmos satellites show isotropic angular distributions during solar energetic particle events. Solar-quiet times, on the other hand, have highly anisotropic distributions suggestive of a trapped-particle component. Detailed Monte Carlo simulations confirm this interpretation and allow us to measure the trapped and cosmic-ray contributions to the observed fluxes. Our data are fully consistent with anomalous cosmic-ray ions, rather than radial diffusion from the outer zone, as the source of the trapped particles.

[1] B. Blake. Geomagnetically Trapped Heavy Ions from Anomalous Cosmic Rays , 1989 .

[2] James H. Adams,et al. The Charge State of the Anomalous Component of Cosmic Rays , 1991 .

[3] R. Beaujean,et al. On the charge state of anomalous oxygen , 1989 .

[4] S. Biswas,et al. Skylab measurements of low energy cosmic rays , 1980 .

[5] D. Eichler,et al. Cosmic ray drift, shock wave acceleration and the anomalous component of cosmic rays , 1981 .

[6] Reuven Ramaty,et al. An interpretation of the observed oxygen and nitrogen enhancements in low energy cosmic rays. , 1973 .

[7] L. Friesen,et al. A technique to determine the charge state of the anomalous low-energy cosmic rays , 1977 .

[8] D. Barraclough. International geomagnetic reference field revision , 1985 .

[9] T. Fritz,et al. Theory for charge states of energetic oxygen ions in the Earth's radiation belts , 1978 .

[10] P. Price,et al. Composition and energy spectra of heavy nuclei of unknown origin detected on Skylab , 1975 .

[11] R. Langel. International Geomagnetic Reference Field revision 1987 , 1988 .

[12] W. Webber. Composition of anomalous cosmic rays , 1989 .