|

| |
Rb81 is the parent radionuclide for Kr81m
 | decay process |
|
electron capture and positron decay |
 | Half Life |
|
4.58 hours |
 | Principal emmission |
|
511kev and 446kev gammas, which contribute to the
generator shielding requirements. This is the most active of the Rb radionuclides on a
fresh generator |
| Rb81 |
Energy
(kev) |
Abundance % |
| Photons |
511 |
62 |
|
446 |
23 |
|
12 |
35 |
|