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\begin{equation}   \mu^{+}=e^{+}+v_{e}+\overline{v_{\mu}}  \end{equation}  The lifetime of muons and antimuons should be the same, if they are in a vacuum. In matter, muons can interact with protons via the electroweak force, and thus will have shorter lifespans than antimuons. The primary purpose of our experiment was to study muon decay. Muons that travel towards the Earth's surface can be detected by a scintillation detector. The means by which the scintillator detects the muons will be expanded upon in our Experimental section. From the data collected by the scintillator we could determine an average muon lifetime. Due to the presence of both antimuons and muons, it is essential to remember when calculating the average muon lifetime that the lifetime observed is actually a weighted average of the two different types of muons. From further analysis of the data we can extract values for charge ratio, and the Fermi Coupling  Constant. \subsection{Gamma Ray Spectroscopy}   \par The radioactive decay of a nucleus for elements Cs-137 and Co-60 was studied by detecting gamma rays which were emitted in response to the decay. Gamma rays are detected through the use of a NaI:TI scintillator crystal. The crystal produces a fast moving free electron which will lose its energy through the excitation of ions in its path as it travels through the crystal. The excitation results in the emission of visible light, which is directed to the photosensitive surface of a photomultiplier tube. The photons then eject electrons via the photoelectric effect. These electrons are collected within the photomultiplier and then amplified in order to yield a current pulse. This current pulse is converted to a voltage pulse, the height of which is directly proportional to the number of photoelectrons. Since the number of photoelectrons is proportional to the number of photons reaching the photomultiplier, and the number of photons is proportional to the initial energy of the freed electron, the height of the voltage pulse is therefore proportional to the initial energy of the freed electron.  \par Thus when a source, such as Cs-137, is placed near the scintillator the photomultiplier will produce a series of voltage pulse, each of which correspond to the decay of a nucleus. These voltage pulses are analyzed using a multi-channel analyzer. The multi-channel analyzer sorts the pulses according the their height, and then counts them to give a spectral energy distribution of the freed electron. The spectral distribution for Cs-137 is shown in Figure ().