Dose Course Book

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Page Background

Particle Fluence

d

A

particle

traversing

sphere

volume dV

[ ]

2

−

=Φ

m

dA

dN

N the expectation value of

the number of particles

striking a finite sphere

surrounding point P

P

d

N

is the number of particles

incident on a infinitesimal

sphere surrounding P of cross

sectional area d

A