Differential Cross Section

  • Thread starter ian2012
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  • #1
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Main Question or Discussion Point

What is physically meant by:

[tex]\frac{d \sigma}{d \Omega}[/tex]

Where [tex]\sigma[/tex] is the cross section and [tex]\Omega[/tex] is solid angle.
I can't really picture it.
 

Answers and Replies

  • #2
Differential cross section [tex]\frac{d\sigma}{d\Omega}[/tex] tells you what is the probability that a particle decay with a certain solid angle.
 
  • #3
clem
Science Advisor
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If you multiply [tex]d\sigma/d\Omega[/tex] by the incident flux (number of particles per unit area) and by a small solid angle [tex]\Delta\omega[/tex], that gives the number of particles scattered into that solid angle.
 
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