Dose 2016

Y

Establish "tubes" within the volume of differential cross section da and differential length h i (x,y)

The differential number of particles N with direction Ω is

da

Ω Ω = Φ Ω ⋅ ur ur

d ( ) N

( ) dΩd

a

X

da

Ω

da

h

∆ V

The number of particles differential in track length dL is

ur

ur

ur

d (Ω) L

d h(x,y) = (Ω) d d h(x,y) ( ) N a Ω ⋅ Φ Ω ⋅

=

Ω

56