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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

Suppose one load irradiation plant uses a 137Cs source while another uses an equal activity of 60Co. Assuming equal fractions of the (rays from the sources are absorbed, why is more time needed to get the same dose using me 137Cs source?

To determine

The more time needed to get the same dose using the 137Cs source. Suppose one food irradiation plant uses a 137Cs source while another uses an equal activity of 60Co. Assuming equal fractions of the γ rays from the sources are absorbed.

Explanation

Introduction:

To kill the germ present on the food the food radiation is to be used. The radiations passing through the food item so that no waste of the radioactive element on the food items can be achieved.

Such X-rays are used for food radiations which have fewer penetrating rays. Cobalt-60 γ rays has average rate of 1.25 MeV, while 137Cs are of 0.67 MeV . The penetrating rays are created with voltages in the range of 5 million volts and whose photon energies lies up to 5 MeV...

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