Does the Compton effect only occur at a specific angle of incidence?

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SUMMARY

The discussion centers on the Compton effect and the behavior of photons when they interact with a target. It is established that not all photons striking the target are scattered; the degree of scattering is influenced by the target's thickness and the cross-section for Compton scattering at specific wavelengths. The conversation clarifies that photons can pass through the target without interaction, leading to the observation of intensity peaks at various angles, not just at theta = 0. This indicates that some photons can reach the detector without being scattered.

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Why is there a peak in intensity at the initial wavelenght? Does this mean thst there are photons reaching the relevator without being scattered? How? Do they hit the electrons?

I put a photo of the graph
 

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Cozma Alex said:
Does this mean thst there are photons reaching the relevator without being scattered?
I suppose that by "relevator" you mean "revelator" for which I think the proper English term is "detector"?

Yes, in general, not all of the photons that strike the target are scattered. How many are scattered, depends on the thickness of the target, and on the cross-section for Compton scattering at that wavelength (or energy).
 
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jtbell said:
I suppose that by "relevator" you mean "revelator" for which I think the proper English term is "detector"?

Yes, in general, not all of the photons that strike the target are scattered. How many are scattered, depends on the thickness of the target, and on the cross-section for Compton scattering at that wavelength (or energy).

So... they just go throught the target, they don't interact with it, if so then we should get this additional peak only at theta = 0, because if photons comes from a direction, and they don't interact with the target, they should go on in that direction, without changing it, why then there are photons that don't interact at other angles? They should change direction only if they interact with the target, how can they don't interact but still change direction?
 

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