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Find the decay constant and the mean lifetime of Co^(55) radionuclide if its activity is known to decrease4.0% per hour. The decay product is nonradioactive. |
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Answer» SOLUTION :If the decay CONSTANT (in `("HOUR")^(-1)`) is `lambda`, then the ACTIVITY after one hour will decrease by a factor `E^(-lambda)`. Hence `0.96= e^(-lambda)` or `lambda= 1.11xx10^(-5)s^(-1)= 0.0408 per hour` Themeanlife time is `24.5 hour` |
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