Transcription of 宇宙放射線 - JAXA 宇宙教育センター
1 1. 1 X
2 14 NASA 1cm2 1kg 90cm 10m X proton 1 2 neutron 1 2 electron 1 2
3 2. ISS International Space Station: ISS 400km Low Earth Orbit: LEO) ( ) 3 Galactic Cosmic Ray : GCR 1 GeV ISS 98% 2% 87% He 12% 1% Li (RBE) 1 GeV/n 11 LEO G( giga)
4 10 9 1,000,000,000 10 eV electron volt 1V 1 flux (RBE) Solar Particle Event: SPE 80 90% (He) 10 20% 1% 1 50 1 1 2 2 NASA 1 NASA SPE Radiation Belt Particle.
5 RBP km km 3 9 M eV MeV 150 250 MeV 11 (SAA :South Atlantic Anomaly) SAA 250km ISS LEO ISS SAA 5 MeV ISS ISS M( mega)
6 10 6 1,000,000 100 ISS ISS Al C O ISS 30-60% 3.
7 --------------------- ------------------------------ -------- --- ------- --------- ---------------------------------------- ----------------------- -------- 3Sv 7Sv
8 4. ISS LEO 1 90 ISS ISS (LET)
9 ISS 1 1mSv 1Sv 1mSv X 3 10 6 ISS DNA DNA 2 NASA (Linear)
10 Energy Transfer: LET) Sv sievert
