Anti-particles in the inner magnetosphere: energetic positron population
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Abstract
Anti-particles can be generated as secondaries by nuclear reactions of cosmic rays and energetic trapped particles with the residual terrestrial atmosphere, and can oe trapped in the magnetosphere by the Earth's magnetic field. The trapped fluxes of anti-protons and positrons could be larger than the interstellar fluxes generated by cosmic rays. The possible existence of a natural positron belt in the Earth's magnetosphere is considered. It is suggested that the positrons may be produced by the nuclear reaction of trapped relativistic protons in the inner zone with the residual atmosphere. The positron spectrum in the range of 10 - 100 MeV at the top of L = 1.2 is calculated and found to be in agreement with experimental results.
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References
BARASHENKOV, V. S. and V. D. TONEEV, 1972. Interaction of high energy particles and atomic nuclei with nuclei. Atomizdat, Moscow, (in Russian). DOI: https://doi.org/10.1007/BF01125091
BASILOVA, R. N., A. A. GUSEV and G. I. PUGACHEVA, 1982. High energy electrons in the inner zone. Geom. and Aeronom. 22, 4, 671-672, (in Russian).
CUMMINGS, J. R., A. C. CUMMINGS, R. A. MEWALD, R. S. SELESNIK, E. C. STONE and T. T. Von ROSENVINGE, 1994. MAST observations of high energy trapped helium nuclei. Abstracts of AGU Spring Meeting, SM 12A-4, 303.
DANIEL, R. and S. A. STEPHENS, 1974. Cosmic-ray-produced electrons and gamma rays in the atmosphere. Rev. Geophys. and Space Phys., 12, 233-258. DOI: https://doi.org/10.1029/RG012i002p00233
GALPER, A. M., V. M. GRACHEV, V. V. DMITRENKO, V. G. KIRILLOV-UGRYVMOV, N. G. POLUHINA and S. E. ULIN, 1983. High-energy electrons in the radiation belt of the Earth. 18 Int. Cosmic Ray Conf., Bangalore, India, MG 10-33, 497-500.
GALPER, A. M., S. V. KOLDASHEV, V. N. MIKHAILOV and S. A. VORONOV, 1993. Energy distributions of high-energy electrons and positrons in the Earth's magnetosphere. 23 Int. Cosmic Ray Conf., Calgary, Canada, 3, SH 8.2, 825-828.
GINZBURG, V. L., 1987. Theory of Physics and Astrophysics, Acad. of Science, Moscow, USSR, 344 (in Russian).
GUSEV, A. A. and G. I. PUGACHEVA, 1982. The generation of electron albedo in the Earth's magnetosphere. Geomagn. and Aeronom. 22, 912-918, (in Russian).
KOLDASHEV, S. V., 1986. High-energy electrons and positrons in inner zone Ph. D. Degree. Moscow Engineering Physics Institute, Moscow, 121, (in Russian).
LOOPER, M. D., R. A. MEWALD, J. R. CUMMINGS, R. S. SELESNIK, D. N. BAKER and J. B. BLAKE, 1994. SAMPEX observations of deuterium in the inner magnetosphere. Abstracts of AGU Spring Meeting, SM 12A-5, 303.
SOBOLEVSKY, N. M., G. I. PUGACHEVA, A. A. GUSEV and I.M. MARTIN, 1994. Model of secondaries produced in craft and spacecraft by neutrons and protons of cosmic rays. Proceedings of the 8th International Conference on radiation shielding. April 24-28, 1994, 619, Arlington, TX, published by the American Nuclear Society, 619-624.
VETTE, J. I., K. W. CHAN and M. J. TEAGUE, 1978. Problems in modeling the Earth's trapped radiation environment. NASA-TM-80447 AFGL-TR-78-0130. DOI: https://doi.org/10.21236/ADA059273
VORONOV, S. A., A. M. GALPER, V. G. KIRILLOV-UGRYUMOV, S. V. KOLDASHEV and A. V. POPOV, 1986. Charge state of the flux of high energy electrons and positrons of the Earth's radiation belts. Pisma v JETP (in Russian) 43, 240-241.