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5.2
Establishing a "transport formula"
3
j,E,
,
'
'
' 1
d ' d '
0
j att
j
j
j
j
j
jE
E Q
Ω
→
= Ω
−Ω∇Φ − ⋅ Φ +
⋅ Φ Ω + =
∑∫ ∫
ur
σ
σ
The entire integrand must be zero
We finally obtain three sets of equation, where the
“j=1" refers to photons,
“j=2" refers to electrons, and
“j=3" refers to positrons
40