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Fine structure of the alpha-spectrum of 241Am with Cobra3
Principle: The α-spectrum of an open 241Am-emitter is measured with a semiconductor a-detector, maximum use being made in this case of the resolution capacity of the pulse height analyzer. Use is made for this purpose of the "Zoom" function, which is an additional amplification stage having in the effect that only that proportion of the pulses exceeding the threshold voltage of 5 V undergoes further processing. The pulse peaks above this threshold are amplified 5 times and restricted to a maximum of 10 V.
Tasks:
1. The spectrum of an open 241Am-emitter is recorded with the xytrecorder at the maximum resolution capacity of the measurement layout, using automatic window movement. The energy of the two peaks preceding the principal peak is calculated. The principal peak, corresponding to a particle energy of 5.486 MeV, is used for calibration purposes.
2. The resolution capacity of the measurement layout is measured from the half-life width of the principal peak.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2522211 | Fine structure of the alpha-spectrum of 241Am with Cobra3 |
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