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Alpha energies of different sources with MCA

Alpha energies of different sources with MCA

Item no.: P2522015

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An alpha-spectrometer, consisting of a photodetector, a preamplifier, a pulse height analyser and a recording device for registration of the spectra is calibrated by means of an open alpha-emitter of known alpha energy (241Am). The energy spectrum of a radium source which is in equilibrium with its decay products, is recorded and evaluated. The alpha-energies found in this way are allocated to the corresponding nuclides of the radium decay series.


  1. The Alpha-spectrum of the 226Ra is recorded with multichannel analyzer.
  2. The calibration spectrum of the open 241Am alpha-emitter is recorded at the same settings.
  3. The alpha-energies corresponding to the individual peaks of the alphaspectrum of the radium are calculated and compared to the values in the literature.

What you can learn about

  • Decay series
  • Radioactive equilibrium
  • Isotopic properties
  • Decay energy
  • Particle energy
  • Potential well model of the atomic nucleus
  • Tunnel effect
  • Geiger-Nuttal law
  • Semiconductor
  • Barrier layer

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