CPB Budapest 2017

Particles – Mean Energy

Example: β - decay of 137 Cs Photons

The emission weighted mean energy E mean

is defined as:

i = ∑ ∑ i

⋅

Ef

i

=

E

keV 4. 615

mean

f

i

Characteristic

i

γ -rays

f i is the intensity (or emission frequency) of the specific energy line E i and the sum is taken over all photon ray energies E i of the radionuclide spectrum.

f

E

i

i