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SOLVED:Which is more dangerous in terms of short-lived exposure to radiation? One mole of 1) 89Sr, p , t1/2 50.5 days, 2) 9Sr, 0 , t1/2 = 28.5 vears 3) 91Sr, P , t1/2 9.5 hours. 94Sr, p , t1/2 - 74 seconds
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Using a nuclear counter the count rate of emitted particles from a radioactive source is measured. At t = 0 it was 1600 counts per second and t = 8 seconds it
Discrete Ordinates Approximations to the First- and Second-Order Radiation Transport Equations - UNT Digital Library
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