EGS Lab Activities Exercise 1 - Sample Results
Interactions of 0.3 MeV photons in aluminum and lead
Sample Aluminum (Al) Results
| Screen shot of "EGS to Order" simulation tool (click for a larger view) | EGS Simulation Image |
|---|---|
 |
 |
| The prediction, based on Figure 2, is that all reactions would be photoelectric effect, where the photons energy is totally absorbed by the atom and an inner-shell electron is ejected. Later, an outer shell electron makes a transition to fill the gap in the inner shell and in the process emits a photon (X-ray). | |
Sample Lead (Pb) Results
| Screen shot of "EGS to Order" simulation tool (click for a larger view) | EGS Simulation Image |
|---|---|
 |
 |
|
The prediction, based on Figure 3, is for 80% photoelectric and 20% Compton scattering and the lead certainly seems to stop tracks within the "matter." |
|
