Question

A worker at a nuclear plant is exposed for 5.00 minutes to 1.00 Ci of beta radiation from ⁹⁰Sr, each with energy of 0.546 MeV. (a) How many beta particles does he absorbs? (b) If he weighs 70.0 kg, how many rads (radiation absorbed dose) does he receive? (c) If the RBE is 1.0, how many mrems of radiation dose is absorbed?

Answer 1

A worker at a nuclear plant is exposed for 5.00 minutes to 1.00 Ci of beta radiation from ⁹⁰Sr, each with energy of 0.546 MeV.

(a) How many beta particles does he absorbs?

Answer = 1.1 x 10¹³ b particles

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(b) If he weighs 70.0 kg, how many rads (radiation absorbed dose) does he receive?

Answer = 0.866 rads;

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(c) If the RBE is 1.0, how many mrems of radiation dose is absorbed?

Answer = 866 mrems