title: Peculiarities of the solar proton events of 19 October 1989 and 23 March 1991 according to the measurements onboard the Mir space station.
abstract: Flux and dose rate dynamics of solar cosmic rays were measured by the Lyulin dosimeter during the events 19 October 1989 and 23 March 1991.  The maximum dose rate registered was 0.4, 0.12 and 0.01 cGy/hour, respectively.  Based on the latitude distribution of particle flux a power law form for the energy spectra of solar protons in the anisotropic phase of the events on 19 October 1989 and 23 March 1991 was determined. It was obtained that after the development of geomagnetic storm protons with energies more than 1 GeV were registered.
authors.affiliation: Institute of Biomedical Problems, Moscow, Russia.
authors.forename: V M
authors.initials: VM
authors.lastname: Petrov
authors.forename: V S
authors.initials: VS
authors.lastname: Mahkmtov
authors.forename: N A
authors.initials: NA
authors.lastname: Panova
authors.forename: V A
authors.initials: VA
authors.lastname: Shurshakov
authors.lastname: Dachev TsP
authors.forename: J V
authors.initials: JV
authors.lastname: Semkova
authors.lastname: Matvijchuk YuP
mesh_terms: D004583:Electrons; D008280:Magnetics; D011522:Protons; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods; D019445:Solar Activity; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft / Q000295:instrumentation
chemical_list: D011522:Protons