Table 1 Intensity of the 478 keV peak with and without a boron insert with the \(^{4}\)He beam. Each total is normalised to the corresponding value for the 511 keV positron annihilation peak.
Height | Area | |||
|---|---|---|---|---|
Experiment | Simulation | Experiment | Simulation | |
No boron | 0.33 ± 0.01 | 0.174 ± 0.003 | 0.50 ± 0.02 | 0.126 ± 0.004 |
Boron | 0.48 ± 0.02 | 0.258 ± 0.005 | 0.63 ± 0.03 | 0.198 ± 0.005 |
Increase (%) | 39 ± 2 | 48 ± 1 | 26 ± 2 | 57 ± 1 |