Physics Bucharest 2017
Charged Particle (=Electronic) Equilibrium
Charged particle equilibrium (CPE) exists if for each charged particle with energy E leaving a volume , there is an identical particle with same energy E entering that volume Low energy beam enters surface: KERMA is max because fluence is greatest at surface Low energy beam: KERMA = Dose because the energy is deposited at the interaction point
Low energy
Ignoring brehmsstralung
Dose Collision Kerma
Dose (Gy)
depth
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