![]() ![]() Composition also plays a key role in determining SEP origin (low corona and chromosphere vs. It thus bridges an important gap between low energy in-situ observations and ground-based Ground Level Enhancements (GLE) observations, making it possible to consider the relationship in origin of these two populations. The near-polar orbit of PAMELA translates to low rigidity cutoffs and thus extends the sensitivity to low-energy particles as low as ~20 MeV. PAMELA measures energetic particles in the same energy range as ground-based neutron monitors but also extends to lower energies covered by statistically precise in-situ observations. These challenges are addressed for the first time with observations from the The Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics ( PAMELA) instrument, successfully launched in 2006 and expected to remain operational until at least the beginning of 2012. Understanding the origin of the high-energy solar energetic particles (SEPs) is a challanging problem due to the limited information provided by ground-level enhancements (GLEs) and the large energy gap between GLEs and the low-energy in-situ SEPs. Solar Energetic Particle Studies with PAMELAĬhristian, E. PAMELA consists of: a time of flight system, a transition radiation detector, a magnetic spectrometer, an anticoincidence detector, an electromagnetic imaging calorimeter, a shower tail catcher scintillator and a neutron detector. The apparatus will be installed onboard the polar orbiting Resurs DK1 satellite, which will be launched into space by a Soyuz TM2 rocket in 2004 from Baikonur cosmodrome in Kazakhstan, for a 3 year long mission. In addition, it will measure the light nuclear component of cosmic rays and investigate phenomena connected with Solar and Earth physics. PAMELA is a satellite-borne experiment which primarily aims to measure the antiproton and positron spectra in the cosmic radiation over a large energy range (from 80 MeV up to 190 GeV for antiprotons and from 50 MeV up to 270 GeV for positrons) and to search for antinuclei with a sensitivity of the order of 10-8 in the antihelium/helium ratio. We present in this paper a status report of the space experiment PAMELA. The launch is foreseen for late 2002/early 2003.īoezio, M. The apparatus will be installed on board of the Russian satellite of the Resurs type in a polar orbit at about 680km of altitude. PAMELA consists of a magnet spectrometer, a transition radiation detector, an imaging calorimeter, a time of flight system and an anticoincidence detector. In addition, it will measure the light nuclear components of cosmic rays, investigate phenomena connected to Solar and Earth physics and it will search for cosmic ray antinuclei with sensitivity better than 10-7 in the He/He ratio. PAMELA aims primarily to measure the flux of antiparticles, namely antiprotons and positrons, in cosmic rays with unprecedented statistics over a large energy range. We provide in this paper a status report of the space experiment PAMELA. Pamela Gray-Hann Photo of Pamela Gray-Hann Pamela Gray-Hann Project Support Specialist | 30 Pamela Gray-Hann is a member of the Geospatial Data Science team within Pam Gray-Hannīonvicini, V.
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