|

| |
Kr81m is the short half-life gas formed by
the decay of Rb81. The decay product of Kr81 is also weakly radioactive.
 | decay process
isomeric decay |
 | Half Life
13 seconds |
 | Principal emmission
191kev gamma ray, used for imaging. |
| Kr81m |
Energy
(kev) |
Abundance % |
| Photons |
191 |
66 |
|
12.5 |
15 |
|
|
|
| Electrons |
177 |
26 |
|
190 |
7 |
|
11 - 12 |
9 |
|
1 |
35 |
|
0.2 |
77 |
|