Radiation - energy distribution of transmitted electrons

[Cookie97]

Homework Statement

What is the meaning of the peaks (for example between 100Kev and 400Kev) in a energy distribution of transmitted electrons graph where the y-axis is probability density (1/eV) and the x-axis is energy (eV) ?
When we simulate a source of photons with a given energy distribution against a phantom, which passes through a collimator.

The Attempt at a Solution

I know that the electrons appear due to Compton effect, for example, among other interactions. The probability density shows me the chance to appear with certain energy (which will be the peak), but what does the energy of the electron tells me? That radiation will penetrate more the phantom with higher energy electrons?

Thanks for your help! :)

 

[Asim Riaz]

The peaks in the energy distribution of transmitted electrons indicate the energies at which electrons are likely to be transmitted. The higher the peak, the more likely it is for electrons with that energy to be transmitted. The energy of the electron determines how far the radiation will penetrate into the phantom; higher energy electrons can penetrate deeper, while lower energy electrons cannot penetrate as far.