Experimentally obtained energy characteristics of the muon flux during Forbush decreases registered by means of the muon hodoscope URAGAN at different phases of 23rd and 24th solar cycles are studied. To obtain the energy spectra of Forbush decrease amplitudes in the flux of the primary particles, coupling functions of the primary and the secondary cosmic ray fluxes for five zenith-angular intervals of the muon hodoscope URAGAN were used. It is shown that the energy characteristics of Forbush decreases, caused by heliospheric disturbances of different types, significantly differ on phases of maximum and minimum of the solar cycle.
Yakovleva, E. I., Astapov, I. I., Barbashina, N. S., Dmitrieva, A. N., Kovylyaeva, A. A., Mishutina, Y. N., … Yashin, I. I. (2015). Energy Characteristics of Forbush Decreases for Different Types of Heliospheric Disturbances According to Muon Hodoscope URAGAN. In Physics Procedia (Vol. 74, pp. 470–477). Elsevier B.V. https://doi.org/10.1016/j.phpro.2015.09.234