Online Experiment: Compton Scattering

In summary, the conversation discusses the use of online simulations or videos for Compton Scattering experiments. It mentions the standard equation and the expected linear relationship between 1-cosθd and ΔE/E2. The data set and plot based on the video show a linear relationship, but with a different gradient than expected. After realizing the mistake, the plot is amended and the obtained gradient is in good agreement with the expected value.
  • #1
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TL;DR Summary
Plotting a compton scattering Dataset
I recently thought it might be interesting to see if there were any online simulations or videos of Compton Scattering experiments. The search result yielded following:

Given the standard equation: $$1-\cos\theta_d=\frac{E_0 \Delta E}{E_1 E_2} ,$$ we should get a straight line with gradient ##\frac {E_0}{E_1}## if we plot ##1-\cos\theta_d## on the x-axis against ##\frac{\Delta E}{E_2}## on the the y-axis. ##E_2## is the energy (at various angles) of the scattered photon(s) and ##\Delta E## is the change in energy referenced against that recorded at ##0^\circ##. So here is my data set and plot based on the above video. Well we do get a clearly linear relationship but my concern is that the regression obtained linear gradient is nowhere near ##\frac {E_0}{E_1}## where ##E_0## is electron rest energy.

Any ideas on what the problem is ? Have to say I thought we needed much higher energy photons than 17.48 keV as in this video experiment (?).

1636142000019.png
 
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  • #2
Oops - I see the mistake. Should have plotted ##\frac{\Delta E}{E_2}## on the x-axis and ##1-\cos\theta_d## on the y-axis. Will fix and show ammended plot.
 
  • #3
1636143442537.png


$$\frac{E_0}{E_1}=\frac{512}{17.44}=29.36$$ so in good agreement with the regression obtained gradient above.
 

FAQ: Online Experiment: Compton Scattering

What is Compton scattering and why is it important?

Compton scattering is a phenomenon in which a photon collides with a charged particle, typically an electron, and loses energy. This effect is important because it provides evidence for the particle nature of light and helps us understand the behavior of electromagnetic radiation.

How does an online experiment on Compton scattering work?

In an online experiment on Compton scattering, a virtual setup is used to simulate the collision between a photon and an electron. The user can adjust parameters such as the energy of the photon and the angle of the collision, and observe the resulting change in energy and direction of the scattered photon.

What are the applications of Compton scattering in real-world scenarios?

Compton scattering has various applications in fields such as medical imaging, material science, and astrophysics. It is used in X-ray imaging techniques, studying the structure of materials, and analyzing the composition of celestial objects.

What are the limitations of an online experiment on Compton scattering?

One limitation of an online experiment is that it cannot replicate the exact conditions of a real-life experiment. The virtual setup may not accurately reflect the complexities of the physical environment, and there may be limitations in the accuracy of the simulations.

Can an online experiment on Compton scattering be used for educational purposes?

Yes, an online experiment on Compton scattering can be a valuable educational tool for students to understand the principles of this phenomenon. It allows for interactive learning and provides a visual representation of the concepts, making it easier to grasp the underlying principles.

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