Exploring Electron Scattering and Compton Wavelength Shifts

In summary, the formula for Compton wavelength shift shows that when the scattering angle theta is 0, there is no change in photon energy and therefore no interaction between the photon and electron. However, when theta is 180 degrees, there is maximum energy transfer from the photon to the electron. This can be interpreted physically through the concept of deflection of the photon.
  • #1
MeChaState
17
0
Hi,

I have a question regarding the Electron scattering angel Teta in formula in:
http://www.whfreeman.com/MODPHYSICS/PDF/3-2bw.pdf
which indicates Compton wavelength shift by:

labda2 - lamda1 = (h/mc)(1 - cos(Teta)). (3.40)

With Teta = 0 we get labda2 = lamda1 (no change of energy by the UV photon!)

Which means, if Photon and Electron are on the same path, there is NO interaction!

If Teta = pi (Photon and Electron moving in the opposite direction) we get the MAX change of photon energy

Can someone please give me an physical interpretation of this?

Thanks
David
 
Last edited by a moderator:
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  • #2
Sorry, I found my mistake,
I didn't know how to delete the question!

Thanks

David
 
  • #3
You are absolutely right. If there is no deflection of the photon (theta = 0), then there is no energy loss. Here is another site:
http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/compeq.html#c1
If theta = 180 degrees, there is maximum energy transfer to the electron.
 

Related to Exploring Electron Scattering and Compton Wavelength Shifts

1. What is electron scattering and how does it work?

Electron scattering is a phenomenon where an electron interacts with another particle or field, causing it to change its direction or energy. This can occur through several processes such as elastic scattering, inelastic scattering, or Compton scattering.

2. What is the Compton wavelength and how does it relate to electron scattering?

The Compton wavelength is a fundamental property of an electron that describes its intrinsic wave-like nature. It is related to the electron's mass and is used to calculate the shift in wavelength of a scattered electron due to the Compton effect. This effect is observed in high-energy electron scattering experiments.

3. How does the Compton wavelength shift provide information about the structure of subatomic particles?

The Compton wavelength shift occurs when a high-energy electron scatters off a subatomic particle, causing its wavelength to change. By measuring the magnitude of this shift, scientists can determine the size and structure of the particle. This information is crucial in understanding the fundamental building blocks of matter.

4. What is the significance of studying electron scattering and Compton wavelength shifts?

Studying electron scattering and Compton wavelength shifts allows scientists to gain a better understanding of the fundamental properties of particles and the forces that govern their interactions. This research has practical applications in fields such as nuclear physics, quantum mechanics, and particle accelerators.

5. How do scientists use electron scattering experiments to test theories and models in physics?

Electron scattering experiments provide valuable data that can be used to test and validate theoretical predictions and models in physics. By comparing the measured results to the expected outcomes based on existing theories, scientists can refine and improve their understanding of the fundamental laws of nature.

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