Table 3 Percentage of positrons emitted from the 22Na source that are detected in a Geiger detector after crossing different layers of coating materials compared measurements performed with no coating
# layers | White acrylic (%) | Teflon (%) |
|---|---|---|
1 | 84.3 ± 1.1 | 91.5 ± 0.6 |
2 | 85.3 ± 1.4 | 87.6 ± 0.7 |
3 | 78.0 ± 1.0 | 77.8 ± 0.3 |