  We present the energy spectrum of antiproton cosmic ray (CR) component
calculated on the basis of the nonlinear kinetic model of CR production in
supernova remnants (SNR). The model includes reacceleration of already existing
in interstellar medium antiprotons as well as creation of antiprotons in
nuclear collisions of accelerated protons with gas nuclei and their subsequent
acceleration by SNR shock. It is shown that antiprotons production in SNRs
produces considerable effect in their resultant energy spectrum making it
essentially flatter above 10 GeV so that the spectrum at TeV-energies increases
by a factor of five. Calculated antiproton spectrum is well consistent with the
PAMELA data, which correspond to energies below 100 GeV. As a consistency check
we have also calculated within the same model the energy spectra of secondary
nuclei and show that the measured boron-to-carbon ratio is consistent with the
significant SNR contribution.
