Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The activities and other specifications for point sources that are used in this study.
| PTB Nuclide | Energy (keV) | Emission Probability | Initial Activity (kBq) | Reference Date | Uncertainty (kBq) |
|---|---|---|---|---|---|
| Am-241 | 59.52 | 35.9 | 259 | 1 January 2009 | ±2.6 |
| Ba-133 | 80.99 | 34.1 | 275.3 | ±2.8 | |
| 356.21 | 21.4 | ||||
| Cs-137 | 661.66 | 34.1 | 385 | ±4.0 | |
| Co-60 | 1173.23 | 99.9 | 212.1 | ±1.5 | |
| 1332.50 | 99.982 |
