03-23-2012, 01:54 PM
or your cesium 137 - grin
All caesium-137 existing today is unique in that it is totally anthropogenic (man-made). Unlike most other radioisotopes, caesium-137 is not produced from its non-radioactive isotope but as a byproduct of nuclear fission,[7] meaning that until now, it has not occurred on Earth for billions of years. By observing the characteristic gamma rays emitted by this isotope, it is possible to determine whether the contents of a given sealed container were made before or after the advent of atomic bomb.
As of April 2011, it was also being found after the Fukushima Daiichi nuclear disasters in Japan. In July 2011, meat from 11 cows shipped to Tokyo from Fukushima prefecture was found to have 3 to 6 times the legal limit of 500 becquerels per kilogram of radioactive caesium.[6]
The mean contamination of caesium-137 in Germany following the Chernobyl disaster was 2000 to 4000 Bq/m2. This corresponds to a contamination of 1 mg/km2 of caesium-137, totaling about 500 grams deposited over all of Germany. ( 28 or so grams to the us ounce) - doesnt take much.....
http://en.wikipedia.org/wiki/Caesium-137...nvironment
All caesium-137 existing today is unique in that it is totally anthropogenic (man-made). Unlike most other radioisotopes, caesium-137 is not produced from its non-radioactive isotope but as a byproduct of nuclear fission,[7] meaning that until now, it has not occurred on Earth for billions of years. By observing the characteristic gamma rays emitted by this isotope, it is possible to determine whether the contents of a given sealed container were made before or after the advent of atomic bomb.
As of April 2011, it was also being found after the Fukushima Daiichi nuclear disasters in Japan. In July 2011, meat from 11 cows shipped to Tokyo from Fukushima prefecture was found to have 3 to 6 times the legal limit of 500 becquerels per kilogram of radioactive caesium.[6]
The mean contamination of caesium-137 in Germany following the Chernobyl disaster was 2000 to 4000 Bq/m2. This corresponds to a contamination of 1 mg/km2 of caesium-137, totaling about 500 grams deposited over all of Germany. ( 28 or so grams to the us ounce) - doesnt take much.....
http://en.wikipedia.org/wiki/Caesium-137...nvironment