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Type: Artigo de periódico
Title: On positron radiation belt in the Earth's magnetosphere
Author: Gusev, AA
Jayanthi, UB
Martin, IM
Pugacheva, GI
Spjeldik, WN
Abstract: The ratio of positron/electron fluxes originated in nuclear spallation reactions in the Earth's magnetosphere is considered. It is supposed that positrons as well as electrons are produced in the decay of charged pions (pi(+/-) --> mu(+/-) --> e(+/-)) born in nuclear collisions of trapped relativistic inner zone protons with the residual atmosphere. These positrons and electrons are captured in the magnetosphere and create positron and electron radiation belts of nuclear origin. The positron/electron trapped magnetospheric fluxes formed with this mechanism are simulated and the resulting computed e(+)/e(-) flux ratio approximate to 4 appears in agreement with the recent observations. This ratio is significantly different from the ratio approximate to 1 obtained from the primary cosmic ray source through the same mechanism.
Country: Brasil
Editor: Sociedade Brasileira Fisica
Citation: Brazilian Journal Of Physics. Sociedade Brasileira Fisica, v. 30, n. 3, n. 590, n. 593, 2000.
Rights: fechado
Identifier DOI: 10.1590/S0103-97332000000300017
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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