This procedure is simply the relating of the channel
position of the peak in a gamma spectrum to the energy of the gamma-ray.
- Assume a linear relationship between the gamma energy and channel
number, y = mx + c
- Choose a radionuclide that gives two well spaced peaks or a mixture
of nuclides for energy calibration processes
- Place the source to give a few thousand cps and collect for ~2000 s
- Using the MCA cursor, make a note of the channel number
corresponding to the maximum of each peak
- Solve the two simultaneous equations to find the slope and intercept
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If a peak was found at channel number 403, what energy would it be in the
spectrum?
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