(i) Estimate the time it will take to produce a 100 μCi source of 36Cl by irradiating 1 g of natural nickel chloride (molecular weight 129.6) in a neutron flux of 1014 neutrons cm² s-1. The cross section for the neutron capture reaction 35CI(n, y) 36 Cl is 43 b and the half-life of 36Cl is 3 × 105 years. 75.8% of natural chlorine consists of 35CI. (ii) Calculate the fraction of 35 Cl nuclei transformed if the sample of natural nickel chloride in part (i) is irradiated for 1 day.
(i) Estimate the time it will take to produce a 100 μCi source of 36Cl by irradiating 1 g of natural nickel chloride (molecular weight 129.6) in a neutron flux of 1014 neutrons cm² s-1. The cross section for the neutron capture reaction 35CI(n, y) 36 Cl is 43 b and the half-life of 36Cl is 3 × 105 years. 75.8% of natural chlorine consists of 35CI. (ii) Calculate the fraction of 35 Cl nuclei transformed if the sample of natural nickel chloride in part (i) is irradiated for 1 day.
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Transcribed Image Text:(i) Estimate the time it will take to produce a 100 μCi source of 36Cl by irradiating 1 g
of natural nickel chloride (molecular weight 129.6) in a neutron flux of 1014 neutrons
cm² s-1. The cross section for the neutron capture reaction 35CI(n, y) 36 Cl is 43 b and
the half-life of 36Cl is 3 × 105 years. 75.8% of natural chlorine consists of 35CI.
(ii) Calculate the fraction of 35 Cl nuclei transformed if the sample of natural nickel
chloride in part (i) is irradiated for 1 day.
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