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# convert radn activity in curies to radn dose is rem or grays

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How does one convert radioactivity (activity) in Curies (or becquerels) to doses in rems or Grays?

##### Solution Summary

A method is shown on how to convert radiation activity in Curies or Becquerels into Radiation dose (absorption) in Rems or Grays.

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Start by noting the definition of Radioactivity which is the number of disintergrations per second of a nuclide species.

Thus the Definition of the Curie (unit Ci)

1 Ci = 3.7 x 10^10 disintergrations per second

The Becquerel (unit Bq) is a more precise measure of radioactivity being 1 disintergration per second

Thus we can say that :

1 Ci = 3.7 x 10^10 Bq

Power (P) flux associated with a certain activity (A) is determined from the product of the mean energy per emission particle/photon {E(m)} and ...

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