Suppose you are a health physicist and you are being consulted about a spill occurred in a radio chemistry lab. The isotope spilled out in the lab was 500 micro cure of `^131Ba` which has half life of 12 days.
What is the decay constant of `^131 Ba`

Suppose you are a health physicist and you are being consulted about a spill occurred in a radio chemistry lab. The isotope spilled out in the lab was 500 micro cure of 131 Ba which has half life of 12 days. Your recommendation is to clear the lab until the radiation level is down to 1 micro curie. How length will the lab have to be closed.