CPB Budapest 2017

Radioactive Decay

β -

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 , - β

- β ≈

3

137 55

137 56

0

0 0

sC ⇒

MeV +ν+β + 1756 .1

aB

−

1

e

E

= 0.514 MeV or 1.1756 MeV

β-,max