Backscattering of Beta Particles

[blade_090]

Im doing experiment about change in backscattering intensity of beta particles.
I want to ask questions about it...
1) Is it true tat the count reading from GM tube = backscattering intensity??
2) In order to find the percentage of backscatter, I need to compare my result with the standard value given??
3) How do I find the saturation of counts from the graph if I use the count rate and thickness of material?? Is the saturation of counts = the gradient of the graph??
4) If the backscatter material is very thick, the reading will reach very high? Because there are a lot of beta particles rebound back from the thick layer of the material??

 

[eljose79]

1) The count reading from a GM tube can be an indication of the backscattering intensity, but it is not always an accurate representation. The intensity of backscattering can depend on various factors such as the energy of the beta particles, the composition and thickness of the material, and the angle of detection. It is important to carefully consider and control these factors in your experiment to ensure accurate results.

2) Yes, comparing your results with a standard value can help you determine the percentage of backscatter. However, it is important to note that the standard value should be for the same type of material and experimental conditions as your own.

3) To find the saturation of counts from your graph, you can look for the point where the count rate plateaus or levels off. This indicates that the maximum number of counts have been recorded and any additional thickness of material will not significantly increase the count rate. The saturation of counts is not necessarily equal to the gradient of the graph, as it also depends on the experimental setup and materials being used.

4) Yes, if the backscatter material is very thick, the count reading may reach very high due to the increased number of beta particles rebounding back. However, it is important to note that the thickness of the material alone does not determine the backscattering intensity. The energy of the beta particles and the composition of the material also play a significant role.