Abstract
The SPEKTR module of the MIR orbital station was launched in May 1995. The multipurpose experiment was based on the GRIF-1 research complex consisting of an oriented X-ray spectrometer, a spectrometer of gamma-quanta and neutrons, a spectrometer of electrons and protons with a large geometrical factor, and a spectrometer of electrons, protons, and nuclei with a small geometrical factor. The solar geophysical aspects of the experiment included the measurements of spectral and temporal parameters of solar hard electromagnetic (0.01-50 MeV) and neutron (> 20 MaB) radiation, the study of spectral, temporal, and spatial characteristics of energetic electrons (0.04-1.5 MeV), protons, and nuclei (1-200 MeV/nucleon) in the circumterrestrial space, as well as the correlations of these parameters with solar activity phenomena.
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