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(Solved): 32. Illustrated below is the figure of 137Cs spectrum. a. Why 137Cs can be used as a background ...
32. Illustrated below is the figure of spectrum. a. Why can be used as a background? (1) b. Identify the Compton scattering features of the above spectrum, for LABEL 2 and 5 . c. Define LABEL 4 in above illustrated spectrum d. Show that the maximum energy of the electrons is given by 10 e. Hence, calculate the mass energy of the electrons (in MeV) using the above illustrated
Expert Answer
a) The radioactive isotope can be used as a background source because it emits gamma rays at specific energies that are well known and easily detected. This makes it a useful calibration source for gamma ray spectroscopy. Additionally, has a relatively long half-life of about 30 years, so it is a stable and long-lasting source of background radiation that can be used for extended periods of time.