Applying x-rays for diagnosis or therapy requires a good understanding of the effects the radiation causes in biological tissue. A lead apron that would stop ¾ of the radiation would already provide passable protection. Find thickness of the apron, if lead mass attenuation coefficient for a radiation source with an energy of 140 keV is µm= 2.32 cm³/g. Density of lead p = 11.35 g/cm³. Strontium is chemically similar to calcium and can replace calcium in bones. The radiation from "Sr can damage the bone marrow where blood cells are produced, and lead to serious health problems. How long would it take for all but 0.01% of a sample of "Sr to decay? It is known that the isotope half life is 28.8 years.

Applying x-rays for diagnosis or therapy requires a good understanding of the effects the radiation causes in biological tissue. A lead apron that would stop ¾ of the radiation would already provide passable protection. Find thickness of the apron, if lead mass attenuation coefficient for a radiation source with an energy of 140 keV is µm= 2.32 cm³/g. Density of lead p = 11.35 g/cm³. Strontium is chemically similar to calcium and can replace calcium in bones. The radiation from "Sr can damage the bone marrow where blood cells are produced, and lead to serious health problems. How long would it take for all but 0.01% of a sample of "Sr to decay? It is known that the isotope half life is 28.8 years.

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter14: Nuclear Physics Applications

Section: Chapter Questions

Problem 48P

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