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Detailed Reference Information |
Bakaldin, A., Galper, A., Koldashov, S., Korotkov, M., Leonov, A., Mikhailov, V., Murashov, A., Voronov, S., Bidoli, V., Casolino, M., De Pascale, M., Furano, G., Iannucci, A., Morselli, A., Picozza, P., Sparvoli, R., Boezio, M., Bonvicini, V., Cirami, R., Vacchi, A., Zampa, N., Ambriola, M., Bellotti, R., Cafagna, F., Ciacio, F., Circella, M., De Marzo, C., Adriani, O., Papini, P., Spillantini, P., Straulino, S., Vannuccini, E., Ricci, M. and Castellini, G. (2002). Geomagnetically trapped light isotopes observed with the detector NINA. Journal of Geophysical Research 107: doi: 10.1029/2001JA900172. issn: 0148-0227. |
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The detector New Instrument for Nuclear Analysis (NINA) aboard the satellite Resurs-01-N4 detected hydrogen and helium isotopes geomagnetically trapped, while crossing the South Atlantic Anomaly. Deuterium and tritium at L shell < 1.2 were unambiguously recognized. The 3He and 4He power law spectra, reconstructed at L shell = 1.2 and B < 0.22 G, have indices equal to 2.30 ¿ 0.08 in the energy range 12--50 MeV nucleon-1 and 3.4 ¿ 0.2 in 10--30 MeV nucleon-1, respectively. The measured 3He/4He ratio and the reconstructed deuterium profile as a function of L shell bring one to the conclusion that the main source of radiation belt light isotopes at Resurs altitudes (~800 km) and for energy greater than 10 MeV nucleon-1 is the interaction of trapped protons with residual atmospheric helium. |
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Abstract |
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Keywords
Magnetospheric Physics, Energetic particles, trapped, Magnetospheric Physics, Magnetosphere--inner, Magnetospheric Physics, Instruments and techniques |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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