![]() ![]() This model was delivered to NASA Johnson Space Center in July 1999 and tested on the Space Radiation Analysis Group DEC-Alpha computer system to ensure that it will properly interface with other software currently used at NASA JSC. This model accounts for the change in geomagnetic cutoff rigidity as a function of geomagnetic activity level. We have developed a computer model of geomagnetic vertical cutoffs applicable to the orbit of the International Space Station. The Development of a Dynamic Geomagnetic Cutoff Rigidity Model for the International Space Station Measured spectra of albedo and atmospheric secondary particles that come below geomagnetic cutoff are also reported. The effective cutoffs observed are in agreement with computer-calculated cutoffs. Buffington, A.Ī high-statistics magnetic spectrometer measurement of the geomagnetic cutoff rigidity and related effects at Palestine, Texas is reported. Measurement of geomagnetic cutoff rigidities and particle fluxes below geomagnetic cutoff near Palestine, TexasĭOE Office of Scientific and Technical Information (OSTI.GOV) We also report measured spectra of albedo and atmospheric secondary particles that come below geomagnetic cutoff. The effective cutoffs we observe are in agreement with computer-calculated cutoffs. We report a high-statistics magnetic spectrometer measurement of the geomagnetic cutoff rigidity and related effects at Palestine, Texas. Measurement of geomagnetic cutoff rigidities and particle fluxes below geomagnetic cutoff near Palestine, Texas.
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