Radiation exposure, natural
 scroll 
In Germany the natural radiation exposure for most
of the inhabitants amounts to 1 to 6 mSv/year with an average value
of 2.1 mSv/year. External radiation exposure contributes to one third,
and internal radiation exposure to two thirds of the effective dose
from all natural radiation sources. The dose due to external irradiation
comes in nearly equal proportions from cosmic radiation, potassium-40
and nuclides of the uranium and thorium chain. Approximately three quarters
of the effective dose due to incorporated radionuclides is made up of
radon-222 and radon-220 and in particular their short-lived decay products,
followed by potassium-40 and polonium-210.
Exposure by |
Annual effective dose in mSv
|
External
irradiation |
Internal
irradiation |
Total |
Cosmic radiation: |
|
|
|
at sea level: |
|
|
|
ionizing component |
0.24 |
|
} 0.27 |
neutrons |
0.03 |
|
at 1,000 m altitude: |
|
|
|
ionizing component |
0.32 |
|
} 0.4 |
neutrons |
0.08 |
|
Cosmogenic radionuclides |
|
0.02 |
0.02 |
Primordial radionuclides: |
|
|
|
|
0.18 |
0.17 |
0.35 |
|
|
|
|
U-238 -> Ra-226 |
} 0.12 |
0.02 |
} 1.3 |
Rn-222 - > Po-214 |
1.1 |
Pb-210 -> Po-210 |
0.05 |
|
|
|
|
Th-232 -> Ra-224 |
}0.14 |
0.01 |
0.2 |
Rn-220 -> Tl-208 |
0.07 |
Total |
0.7 |
1.4 |
2.1 |
Contributions of various sources of
natural radiation exposure in Germany
back
|
|
ENS conferences |
PIME 2012
12 - 15 February 2012 in Warsaw, Poland
______________
|
RRFM 2012
18 - 22 March 2012 in Prague Czech Republic
______________ |
TopSafe 2012
22 - 26 April 2012 in Helsinki, Finland
______________
|
TopFuel 2012
2 - 6 Sept. 2012 in Manchester, UK
______________
|
ENC 2012
9 - 12 December 2012 in Manchester, UK |
|
|
