PRINCIPAL INVESTIGATOR (S): Peter W. Higgins, Joseph C. Lill, and Timothy T. 



White 



EXPERIMENT TITLE/NUMBER : Radiation Environment at High Orbital Altitudes 



PROGRAM/MISSION : Gemini 10, 11 



CLASSIFICATION : Human 



DISCIPLINE(S) : Radiobiology 



OBJECTIVES : To measure the radiation environment and its effects in the South 

 Atlantic Anomaly (SAA). 



PROTOCOL : Radiation dose calculations were made by determining the radiation 

 environment within the spacecraft and its effects on the crew using a 

 radiation monitoring system and passive dosimeters. 



EQUIPMENT : Radiation monitoring system, passive dosimeters. 



RESULTS : An increase in dose was found in Gemini 10 high-altitude passes 

 through the SAA with negligible doses received on Gemini 1 1 after a much 

 higher altitude flight opposite the SAA. 



CONCLUSIONS : Manned spaceflight at higher altitudes was possible with a 

 minimum of radiation dose. This was due to the confirmed continuing decay of 

 the artificially injected electrons and to careful planning of the trajectory. 



PUBLICATIONS : 269 



31 



