3.1. Let the attenuation coefficient 
up = 1 m^-1, uniformly
throughout the region within the circle of Figure 3.3. Let the radius
of the circle, rmax = 1 m, ᴪ_o =1, and calculate the detected x-ray
ᴪ(r) for the case = 0 degrees.

Question

3.1. Let the attenuation coefficient 
up = 1 m^-1, uniformly
throughout the region within the circle of Figure 3.3. Let the radius
of the circle, rmax = 1 m, ᴪ_o =1, and calculate the detected x-ray
ᴪ(r) for the case  = 0 degrees.

anonymous · Answer

What will be the formula to get this value?

jamesj · Answer

A copy of the figure referred to in the question would be helpful.

anonymous · Answer

attachment

jamesj · Answer

What is the function $ \Psi $ measuring here?  In short, I'm not familiar exactly with this sort of problem, but could almost certainly figure it out if you gave some more background.

There might be someone else here who can understand it immediately.

anonymous · Answer

the intensity of the x-ray of a pencil
beam after passing through a slice