Dose Course 2018_Flipping book

Conversion of energy (charged particles)

The cema , C , for ionizing charged particles, is the quotient of dE el el is the mean energy lost in electronic interactions in a mass dm of a material by the charged particles, except secondary electrons, incident on dm (ICRU 85, 2011) by dm , where dE

= = Φ ;

= න Φ

,Δ = Φ ∆ ;

Δ

=

= න Φ′

Δ

Δ