- #1
neanderthalphysics
- 53
- 6
- TL;DR Summary
- We work back to estimate the energy of one incoming photon from the degree of ionization it causes.
What if there is more than one? Do the signals overlap?
I understand the concept that a more energetic photon would cause more ionization events and therefore we can estimate the original energy of the incident photon.
But what I don't get is that in practice, you don't get one photon entering the detector at a time, you get a whole bunch of them, of perhaps unknown intensity and energy spectra.
How do we know that multiple weak ionisation events from X-rays are not caused by one high energy gamma ray?
But what I don't get is that in practice, you don't get one photon entering the detector at a time, you get a whole bunch of them, of perhaps unknown intensity and energy spectra.
How do we know that multiple weak ionisation events from X-rays are not caused by one high energy gamma ray?