Positron annihilation in a strong magentic field.
Positron annihilation in a strong magentic field.
Positron annihilation in a strong magentic field.
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Differential cross section for s<<strong>strong</strong>>in</<strong>strong</strong>>gle photon <<strong>strong</strong>>annihilation</<strong>strong</strong>><br />
direction of magnetic l<<strong>strong</strong>>in</<strong>strong</strong>>e<br />
d σ αλ m ⎡ θ E ⎤ m<br />
dΩ b ⎢ b m<br />
⎣<br />
⎥<br />
⎦ ⎣ ⎦<br />
2 2<br />
2<br />
2<br />
1γ<br />
0<br />
2s<<strong>strong</strong>>in</<strong>strong</strong>> ⎛ ⎞<br />
C<br />
0 ⎡ 2<br />
0 ⎤ 2<br />
= exp ⎢− ⎜ ⎟ ⎥Θ 2E0<br />
s<<strong>strong</strong>>in</<strong>strong</strong>><br />
2 2 2<br />
⎢ −<br />
E0 m0E0<br />
0<br />
s<<strong>strong</strong>>in</<strong>strong</strong>>θ<br />
⎥<br />
− ⎝ ⎠<br />
θ<br />
b=1<br />
E = 1.1m<br />
0 0<br />
E = 2m<br />
0 0<br />
E = 1.4m<br />
0 0<br />
0<br />
Ω= π −2arcs<<strong>strong</strong>>in</<strong>strong</strong>> m E 0<br />
13/37
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