A photon beam (2λ = 1.00 pm) is incident on a sphere with radius 1.00 mm. It has energy 100 MeV. a. Assuming that within the sphere there are 1000 type A-interactions, what is the cross section of this type-A interaction? b. Assuming that within the sphere there are 2000 type B-interactions, what is the cross section of this type-B interaction?

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A photon beam (2λ = 1.00 pm) is incident
on a sphere with radius 1.00 mm. It has
energy 100 MeV.
a. Assuming that within the sphere
there are 1000 type A-interactions,
what is the cross section of this
type-A interaction?
b. Assuming that within the sphere
there are 2000 type B-interactions,
what is the cross section of this
type-B interaction?
Transcribed Image Text:A photon beam (2λ = 1.00 pm) is incident on a sphere with radius 1.00 mm. It has energy 100 MeV. a. Assuming that within the sphere there are 1000 type A-interactions, what is the cross section of this type-A interaction? b. Assuming that within the sphere there are 2000 type B-interactions, what is the cross section of this type-B interaction?
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