title: Some methodological aspects of estimating cosmic ray exposures in orbital flights.
abstract: Computations of the transmission functions of cosmic rays penetrating the geomagnetic field are discussed. Results of LET spectra calculations both inside and outside the spacecraft COSMOS-1129 are presented.  Comparison of calculations and measured results shows (in interval 10-5 x 10(3) MeV/cm) a difference of less than 30%. The need for further systematic low altitude particle measurements for the purpose of developing dynamic models of particle populations is stressed.
authors.affiliation: Institute of Biomedical Problems, Moscow, USSR.
authors.forename: V E
authors.initials: VE
authors.lastname: Dudkin
authors.forename: E E
authors.initials: EE
authors.lastname: Kovalev
authors.forename: V M
authors.initials: VM
authors.lastname: Petrov
authors.forename: L
authors.initials: L
authors.lastname: Just
authors.forename: K
authors.initials: K
authors.lastname: Kudela
mesh_terms: D003359:Cosmic Radiation; D018499:Linear Energy Transfer; D008280:Magnetics; D008962:Models, Theoretical; D011522:Protons; D011829:Radiation Dosage; D011834:Radiation Monitoring; D011853:Radiobiology; D011874:Radiometry; D019445:Solar Activity; D013026:Space Flight; D018531:Spacecraft
chemical_list: D011522:Protons