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The X-ray beam has an HVL of 2.9 mm Al at 70kVp. a. What is the effective energy of the beam? b. How much will

The X-ray beam has an HVL of 2.9 mm Al at 70kVp.

a. What is the effective energy of the beam? b. How much will the beam be attenuated if a block of aluminum 10 mm thick is placed in the beam's path? c. Can you numerically estimate the effective energy of the beam exiting the Al block? d. How would your answers change if the beam was a monoenergetic beam of gamma rays of 90 keV

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