Kr81m

 

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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

 

 

 

 

 

 

 

 

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Last modified: November 29, 2002