. - 7 . Y , A population of 550 was assumed Saebemthe one that mey move back <isiemd., Values for other initial populations maybeobtained dy of the results. — ven Tne total population at ‘the bb. hg =a end of 30 years is given by the compounding equation: Pag = 550 (140.038)= 1684 The number of births in 30 years are given by: 30 ~~ B ootexss0 (1.038)* dx 0 where x is the time between 0 and 30. e This gives 0.042x550 (1.0387 30 -1) 1. |= 1277 Bs_ oq-ogg— Similarly, the number of deaths in the 30 year period would be: t 39 Deaths 0.0054x550 . Deaths 07-7~ggg0054x550 «(1.038 3044. -1] = 164 hel dem (1.035)* dx . One other ibem needed is che reduction in 30 y22 born after the return because of tne decrease inr adietion levels and hat the smaller amount of time in the 30 year period is spent on the For this, the total pnooulation dose for s2 born after island. returning assuming an initial dose rate of 1 rad/year is given by: ‘