Required a Po-210 source for calibrations. Source must be 37.00GBq of activity t

Question

Required a Po-210 source for calibrations. Source must be 37.00GBq of activity the last day of Aug 2016@ 9:07pm. How many millicurries of activity should be ordered by 15 August 2016 @1200 noon to ensure that I have enough activity left to do my calibration in the end of August? Required a Po-210 source for calibrations. Source must be 37.00GBq of activity the last day of Aug 2016@ 9:07pm. How many millicurries of activity should be ordered by 15 August 2016 @1200 noon to ensure that I have enough activity left to do my calibration in the end of August?

Explanation / Answer

Polonium has 1.2x1010 disintegrations per second or 1.2x1010 Bq (1 Bq = 1 disintegration per second)

the time from 15 August 2016 @1200 noon to 31 August @ 9:07pm comes out to be: (16*24*60 + 547) minutes.

= 1415220 seconds

Thus the overall disintegration taking place in given time= 16982640 GBq

Thus the initial activity to be ordered= 16982677 GBq

Now 1 Curie = 36.875 GBq

Thus, initial activity= 460547.173 Curies

= 460547173 MiliCuries

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