How Do You Calculate Radiation Dose and Beam Current from Proton Exposure?

AI Thread Summary
To calculate the radiation dose received by the worker's hand from the proton exposure, the energy fluence rate of 50-MeV protons at a fluence rate of 4.6×10^10 protons cm–2 s–1 is used, along with the estimated exposure time of 0.5 seconds. The worker's skin dose can be estimated using the appropriate mass energy-absorption coefficient, which is currently unknown to the user. For determining the beam current, the area of exposure (2.7 cm²) is factored into the calculations. The Bethe formula is suggested as a useful approximation for these calculations. Accurate results depend on obtaining the correct mass energy-absorption coefficient for the specific scenario.
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Homework Statement


A worker inadvertently puts his hand at right angles into a uniform, parallel beam of 50-MeV protons with a fluence rate of 4.6×1010 protons cm–2 s–1. His hand was momentarily exposed for an estimated 0.5 s.

(a) Estimate the dose that the worker received to the skin of his hand.

(b) If the beam covered an area of 2.7 cm2, what was the beam current?

Homework Equations



D=energy fluence rate(mass energy-absorption coefficient)

The Attempt at a Solution


energy fluence rate=4.6×1010x0.5x500M
I don't have mass energy-absorption coefficient.

I don't think I am using the correct formula. I am clueless right now. I have tried a lot but couldn't find anything else. Need help
 
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The Bethe formula should give a good approximation.
 

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