. what is the approximate spread of energies of electrons set in motion

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Monoenergetic photons of energy 100 keV are incident on water at an SSD of 60 cm. The flux at the surface is 1012 photons/cm2/min. The photons originate from an essentially point source. For the primary photons:

a. what is the approximate spread of energies of electrons set in motion? (Ans. 0 <=Te <=100 keV)

b. what is the kerma rate at the surface? (Ans. 0.407 Gy/min)

c. explain why electrons set in motion produce no bremsstrahlung radiation

d. demonstrate that CPE begins essentially at the surface.

e. what is the collision kerma rate at the surface? (Ans. 0.407 Gy/min)

f. what is the primary dose rate at the surface? (Ans. 0.407 Gy/min)

g. what is the primary dose rate at 3 cm depth? (Ans. 0.22 Gy/min)

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