NUSC 346 Lecture Notes - Lecture 7: Vacuum Chamber, Vacuum Pump, Alpha Decay
21 Jul 2015
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Radiochemical separation of polonium from bismuth (preparation of a thin - source) Experiment date: mar 27th 2015. Submission date: apr 14th 2015. In this experiment, polonium was used to observe the alpha spectroscopy. Using the separator funnel, we performed extraction of po. The po deposited on ag foil and their energy spectrum was measured by the alpha spectrometer in the vacuum chamber. The measurement obtained from the alpha detector had one major peak, in other words, one isotope from the experiment. Only ~5% of po from original tracer were deposited onto ag foil. The alpha decay, unlike gamma and beta decay, can be stopped by even a piece of paper. Therefore, the alpha decay samples are measured in the vacuum system so there will not be any disturbance. The procedure of this lab follows as the lab manual of experiment 7, page 72 to 77. Instrumentation of alpha spectrometer fig2. Observations and data: s t n u o c.
