A measurement of the cosmic ray positron fraction e+/(e+ +e−) in the energy range of 1–30 GeV is presented. The measurement is based on data taken by the AMS-01 experiment during its 10 day Space Shuttle flight in June 1998. A proton background suppression on the order of 106 is reached by identifying converted bremsstrahlung photons emitted from positrons.
Cosmic-ray positron fraction measurement from 1 to 30GeV with AMS-01
BATTISTON, Roberto;BERTUCCI, Bruna;FIANDRINI, Emanuele;AMBROSI, Giovanni;PAULUZZI, Michele;ESPOSITO, Gennaro;BURGER, WILLIAM J.
2007
Abstract
A measurement of the cosmic ray positron fraction e+/(e+ +e−) in the energy range of 1–30 GeV is presented. The measurement is based on data taken by the AMS-01 experiment during its 10 day Space Shuttle flight in June 1998. A proton background suppression on the order of 106 is reached by identifying converted bremsstrahlung photons emitted from positrons.File in questo prodotto:
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