CPB Budapest 2017

Radioactive Decay

Electron Capture (EC)

Similar to the competitive β + decay, electron capture is an isobaric nuclei transformation (the mass number A remains unchanged). The EC general disintegration scheme is shown in the following equation

A Z

0

A

0 0

1Z ⇒ + − e

Q +ν +

parent

daughter

−

1

EC e

22 11

22 10

0 0

aN ⇒

+ν+

.8422 2 eN

MeV

e