You're getting more radiation than you realize

[Oval3Holer]

Radiation Clouds at Aviation Altitudes ? Spaceweather.com (http://news.spaceweather.com/radiation-clouds-at-aviation-altitudes/)

We are flying through clouds of radiation which the dosage program in Crew Direct does not take into account in its dosage total.

[Shep69]

Interesting expansion of the Compton effect.

Makes sense; it's the same basic concept that results in EMP occurring from a high altitude nuclear explosion. The 'storage bottle' theory is kinda new but also makes sense -- not a lot different than lightning discharges from a storm.