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Solar modulation of galactic hydrogen and helium over the 23rd solar minimum with the PAMELA experiment
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2013 (English)In: Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013, Sociedade Brasileira de Fisica , 2013Conference paper, Published paper (Refereed)
Abstract [en]

PAMELA has been orbiting the Earth for more than six years, gathering data on solar, galactic and trapped cosmic rays during the time of the last solar minimum. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail catcher scintillator and a neutron detector. The combination of these devices allows charged particle and antiparticle identification over a wide energy range and with an unprecedented precision. The quasi-polar orbit of the instrument, with an inclination of 70 degrees, makes it possible to measure low energy particles starting from about 100 MeV/n. In this work we present the time and rigidity dependence of the galactic proton and helium fluxes over the first 4 years of operation during the A < 0 solar minimum of solar cycle 23. 

Place, publisher, year, edition, pages
Sociedade Brasileira de Fisica , 2013.
Keywords [en]
Cosmic rays, Satellite-borne experiment, Solar modulation, Charged particles, Cosmology, Helium, Hydrogen, Modulation, Orbits, Particle detectors, Solar energy, Anticoincidence systems, Electromagnetic calorimeter, Low-energy particles, Magnetic spectrometers, Silicon micro-strip, Time of flight systems, Solar power generation
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-237199Scopus ID: 2-s2.0-85052294727ISBN: 9788589064293 (print)OAI: oai:DiVA.org:kth-237199DiVA, id: diva2:1262194
Conference
33rd International Cosmic Rays Conference, ICRC 2013; Rio de Janeiro; Brazil; 2 July 2013 through 9 July 2013
Note

QC 20181109

Available from: 2018-11-09 Created: 2018-11-09 Last updated: 2018-11-09Bibliographically approved

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Carlson, Per

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