Plotting a Kurie Plot with a PHA

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SUMMARY

This discussion focuses on plotting a Kurie plot for measuring the endpoint energy of beta minus particles emitted from a Sr-90 radioactive source using a pulse height analyser (PHA). The user seeks a method to plot the Kurie plot without complex mathematics, suggesting a relationship between the square of a variable current and the counts per time (N/I^2). However, the challenge arises from the inability to measure current directly with the PHA, leading to the need for alternative plotting methods.

PREREQUISITES
  • Understanding of Kurie plots and their significance in particle physics.
  • Familiarity with pulse height analysers (PHA) and their operation.
  • Basic knowledge of beta decay and the properties of Sr-90.
  • Ability to interpret beta spectra and count rates in experimental physics.
NEXT STEPS
  • Research methods for converting count rates from a PHA into a format suitable for Kurie plot analysis.
  • Explore alternative plotting techniques for beta decay data without direct current measurements.
  • Learn about the mathematical relationships involved in Kurie plots and how they apply to beta decay experiments.
  • Investigate software tools for data analysis and plotting in experimental physics, such as ROOT or MATLAB.
USEFUL FOR

Physicists, researchers in nuclear physics, and students conducting experiments involving beta decay and particle detection using pulse height analysers.

CF.Gauss
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Hi...

I have to measure the end point energy of a beta minus particle being emitted from a Sr-90 radioactive source. Part of this is plotting a Kurie plot. I am using a pulse height analyser (PHA) to get the beta spectrum (which counts how many beta particles are detected N,on the y-axis and has channel on the x-axis.)
Now I am pretty sure there is an easy way( one that doesn't involve any horrible maths) of doing a Kurie plot by using a variable current and plotting the square of that against N/I^2 (i think).
But as I am using a PHA I don't know how to plot a Kurie plot as there's no change in current that i can read!

Any help as to how i should plot this?
 
Physics news on Phys.org
The current is replaced by the number of counts per time.
 

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