Mass attenuation coefficient (u/p) for 1 MeV photons in water is given to be 0.0708 cm²/g (Table 8.3 of your textbook). Beryllium (Be) is a light metal with density p-1.85 g/cm. Naturally, it contains only one isotope: 4 Be. Because both Be and water are low Z materials, the mechanisms of interaction for 1 MeV photons are identical in water and Be. It is not necessary but useful to have a look in the below graph that was used in the lectures (and also exists in your textbook, Fig 8.13). Estimate the linear attenuation coefficient for 1 MeV photons passing through a thin sheet of Be foil and express it in (1/cm). 10 WATER Total attenuation p 0.1 Pair K/p Compton absorption oa/p-- Compton scattering o,/p Total absorption Halp 0.01 100 10 1 0.001 0.01 0.1 Mev Photo t/p Rayleigh o,/p em2/g water

Mass attenuation coefficient (u/p) for 1 MeV photons in water is given to be 0.0708 cm²/g (Table 8.3 of your textbook). Beryllium (Be) is a light metal with density p-1.85 g/cm. Naturally, it contains only one isotope: 4 Be. Because both Be and water are low Z materials, the mechanisms of interaction for 1 MeV photons are identical in water and Be. It is not necessary but useful to have a look in the below graph that was used in the lectures (and also exists in your textbook, Fig 8.13). Estimate the linear attenuation coefficient for 1 MeV photons passing through a thin sheet of Be foil and express it in (1/cm). 10 WATER Total attenuation p 0.1 Pair K/p Compton absorption oa/p-- Compton scattering o,/p Total absorption Halp 0.01 100 10 1 0.001 0.01 0.1 Mev Photo t/p Rayleigh o,/p em2/g water

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter30: Nuclear Physics

Section: Chapter Questions

Problem 1P

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