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Preliminary beta spectrum measurements using a magnetic spectrometer.

Frédéric Juget1, Claude Bailat1, François Bochud1

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Summary

This study details the performance of a double focusing magnetic beta spectrometer, achieving excellent energy resolution. The spectrometer

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Beta decayEfficiency correctionEnergy calibrationMagnetic spectrometer

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Area of Science:

  • Nuclear Spectroscopy
  • Applied Physics

Background:

  • Accurate measurement of beta particle energies is crucial for nuclear physics research and applications.
  • Magnetic spectrometers offer high resolution for beta decay studies.

Purpose of the Study:

  • To evaluate the performance characteristics of a newly developed double focusing magnetic beta spectrometer.
  • To assess the energy resolution and counting efficiency of the instrument.

Main Methods:

  • Utilized conversion electron peaks from Cesium-137 (Cs-137) and Barium-133 (Ba-133) for energy resolution measurements.
  • Employed a Phosphorus-32 (P-32) source to determine the energy-dependent counting efficiency.
  • Corrected measured spectra of Cs-137 using the derived efficiency function.

Main Results:

  • Achieved an energy resolution of 0.73% at 624 keV and 1.33% at 124 keV.
  • Estimated the spectrometer's counting efficiency across different energies.
  • Demonstrated good agreement between the corrected experimental spectrum and the theoretical spectrum for Cs-137.

Conclusions:

  • The double focusing magnetic beta spectrometer exhibits high energy resolution.
  • The determined counting efficiency allows for accurate spectral analysis.
  • The instrument's performance is validated by comparison with theoretical predictions.