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The SI-unit of radioactivity is the becquerel (Bq). It describes the mean number of nuclei that perfom radioactive decay per second. The units curie (Ci) and rutherford (Rd) are no longer in use.
For a conversion to dose equivalent (in sievert, Sv) you need conversion factors that depend on the isotope and the kind of contact (e. g. inhalation).
Example: How many kilobecquerel correspond to 500 mCi ? Type "500" into the field behind which "mCi" is written. Click on any empty space in the window or on the "calculate" button. Read the result in the other fields. (e.g. 1.85·107 kBq).
© Bernd Krüger, 01.09.2006, 02.06.2018
Bernd Krüger, 2020