Dose 2016

5.2 Looking at the 4 terms in more detail

(1) The net number of particles j flowing out of the volume ∆ V :

dA

d

N

d d Ω = Φ Ω

E

j

j,E,

at the surface element dA:

d d d Ω = ΩΦ Ω ur ur A E

d

N

j,in-out

j,E,

over the entire surface:

∆ V ∆ S

j,E, Ω = ΩΦ Ω ∫ ur ur d d d A E

d

N

j,in-out

S

d

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