Radioactive cobalt 60 is used extensively in nuclear medicine as a ray source It is made by a neutron capture reaction from cobalt 59 and is a emitter emission is accompanied by strong radiation The half life of cobalt 60 is 5 27 years (a) How long will it take for a cobalt 60 source to decrease to...

To solve this problem we can use the concept of the halflife of cobalt60 a The halflife of cobalt60 ...

Radioactive cobalt-60 is used extensively in nuclear medicine as a -ray source. It is made by a

Question:

Radioactive cobalt-60 is used extensively in nuclear medicine as a γ-ray source. It is made by a neutron capture reaction from cobalt-59 and is a β emitter; β emission is accompanied by strong γ radiation. The half-life of cobalt-60 is 5.27 years.
(a) How long will it take for a cobalt-60 source to decrease to one eighth of its original activity?
(b) What fraction of the activity of a cobalt-60 source remains after 1.0 year?

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