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Author Archives: Anonymous

If one HVL of lead is 5 mm, how many centimeters of lead wou…

If one HVL of lead is 5 mm, how many centimeters of lead would be required to reduce the transmission of a photon beam to less than 5% of its original intensity?

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Compton interactions are independent of atomic number.

Compton interactions are independent of atomic number.

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Describe Bragg peak and why it is beneficial in radiation th…

Describe Bragg peak and why it is beneficial in radiation therapy.

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An additional 2 cm of copper is added to the copper absorber…

An additional 2 cm of copper is added to the copper absorber in question #33. How many photons remain in the beam?

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As photon energy increases beyond the binding energy of the…

As photon energy increases beyond the binding energy of the K electron, the ____ effect decreases rapidly and the _____ effect becomes more important.

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Neutrons are indirectly ionizing.

Neutrons are indirectly ionizing.

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The fluence rate of a photon beam is the fluence per unit ti…

The fluence rate of a photon beam is the fluence per unit time.

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The probability of this interaction occurring is Z3/E3.

The probability of this interaction occurring is Z3/E3.

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The energy of the incident photon must be equal to or slight…

The energy of the incident photon must be equal to or slightly greater than the electron-binding energy in a Compton interaction.

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What is the mass attenuation coefficient for the problem abo…

What is the mass attenuation coefficient for the problem above (#33)? Copper has a density of 8.9 g/cm3.

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