Table 2.
Characteristics of megavoltage (MV) beam collected at different depths as plotted in Figure 6. Emean and Emedian are the mean and median energy, respectively. E < 100 keV is the percent of particles in the beam with energy less than 100 keV. Additionally, shown is the percentage of electrons contained in the beam and the total number of particles (Count) at each depth.
| Depth (cm) | Emean (MeV) | Emedian (MeV) | E < 100 keV (%) | Electrons (%) | Count (Million) |
|---|---|---|---|---|---|
| 2.5 | 1.53 | 1.16 | 2.26 | 1.17 | 1.485 |
| 10 | 1.53 | 1.16 | 3.60 | 1.19 | 1.151 |
| 20 | 1.67 | 1.34 | 3.79 | 1.33 | 0.715 |
| 30 | 1.85 | 1.57 | 3.82 | 1.46 | 0.431 |