“…Quasi-periodic pulsations of bremsstrahlung emission intensity with period from millisecond to a few seconds are also be of some interest. These pulsations could be the result of from some magnetohydrodynamic oscillations in the source region or may be due to the modulation of electron acceleration and the injection mechanisms (Dmitriev et al, 2007;Rao et al, 2010). Protons and alpha particles accelerated up to 10-30 MeV/nucleon can generate in nuclear reactions with nuclei of solar plasma a narrow gamma-line emission in 0.3-8 MeV energy range.…”