The PAMELA experiment is being carried out on board the Russian satellite Resurs DK1 placed in the near-earth near-polar orbit on June 15, 2006. The apparatus comprising a silicon-strip magnetic spectrometer and an electromagnetic calorimeter allows measurement of electron and positron fluxes in cosmic rays in a wide energy interval from ∼100 MeV to hundreds of GeV. The high-energy electron and positron separation technique is discussed and the data on positron-to-electron ratio in primary cosmic rays up to E ≃ 10 GeV from the 2006 - 2007 measurements are reported in this work.
|Number of pages
|Bulletin of the Russian Academy of Sciences: Physics
|Published - 2009
Bibliographical noteFunding Information:
ACKNOWLEDGMENTS The Russian authors acknowledge the support of the Russian Foundation for Basic Research, projects no. 07-02-000922a and no. 06-02-16327.