CPB Ljubljana 2018 course book

Radioactive Decay

β -

▪  - decay

The β - -particle and the antineutrino share the disintegration energy Q β- . The emitted β - -particle can have any kinetic energy up to the maximum possible, T β-,max , as can be derived from:

E

= Q

β-,max

β-

and

E

E max , - 



-



3

137 55

137 56

01

0 0

sC



aB

MeV   1756 .1



e

E

= 0.514 MeV or 1.1756 MeV

β-,max