Some Radiation Problems in the Supersonic Environment 630272

The cosmic radiation environment at 70, 000 ft altitude is described and discussed in terms of its ability (1) to deliver low-LET ionization dose to tissue, and (2) to kill, at high-LET, a fraction of the closely packed cells in an organ in the body. The dose rates and fractional cell lethality values are found to be small, posing no practical restriction to normal flight scheduling for either passengers or crew. Solar flare proton events are shown to develop slowly enough to allow an aircraft to proceed to destination without excessive dose to its occupants.


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