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

In summary, the peak in intensity at the initial wavelength indicates that not all photons that strike the target are scattered, and the amount of scattering depends on the thickness of the target and the cross-section for Compton scattering at that wavelength. While some photons may pass through the target without interacting, there are still photons that change direction without interacting at other angles. This suggests that there may be other factors at play besides interaction with the target.
  • #1
physics user1
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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  • #2
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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  • #3
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?
 

1. What is the Compton effect?

The Compton effect, also known as Compton scattering, is a phenomenon in which a photon (particle of light) collides with an electron, causing the photon to lose energy and change its direction, while the electron gains energy and is ejected from its original atom.

2. How does the intensity of the incident light affect the Compton effect?

The intensity of the incident light does not affect the Compton effect. The only factors that affect the Compton effect are the energy and angle of the incident photon, and the atomic structure of the material it is interacting with.

3. What is the relationship between the intensity of the scattered light and the intensity of the incident light in the Compton effect?

The intensity of the scattered light is directly proportional to the intensity of the incident light. This means that if the intensity of the incident light is doubled, the intensity of the scattered light will also double.

4. How does the Compton effect support the particle nature of light?

The Compton effect is a clear demonstration of the particle nature of light. It shows that photons, which are traditionally thought of as waves, can also behave like particles when they interact with matter.

5. What practical applications does the Compton effect have?

The Compton effect has several practical applications, including medical imaging techniques such as Computed Tomography (CT) scans, X-ray diffraction for studying the structure of crystals, and gamma-ray astronomy for studying high-energy sources in space.

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