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Internal conversion
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==Example: decay of {{sup|203}}Hg== [[File:Decay scheme of 203Hg.jpg|thumb|left|Decay scheme of {{sup|203}}Hg]] [[File:Electron spectrum of 203Hg.png|thumb|Electron spectrum of {{sup|203}}Hg, according to Wapstra et al., Physica 20 (1954) 169]] The [[decay scheme]] on the left shows that {{sup|203}}Hg produces a continuous [[Beta decay|beta spectrum]] with maximum energy 214 keV, that leads to an excited state of the daughter nucleus {{sup|203}}Tl. This state decays very quickly (within 2.8Γ10{{sup|β10}} s) to the ground state of {{sup|203}}Tl, emitting a gamma quantum of 279 keV. The figure on the right shows the electron spectrum of {{sup|203}}Hg, measured by means of a magnetic [[spectrometer]]. It includes the continuous beta spectrum and K-, L-, and M-lines due to internal conversion. Since the binding energy of the K electrons in {{sup|203}}Tl is 85 keV, the K line has an energy of 279 β 85 = 194 keV. Due to lesser binding energies, the L- and M-lines have higher energies. Due to the finite energy resolution of the spectrometer, the "lines" have a [[Gaussian function|Gaussian]] shape of finite width.
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