Element Fingerprint (IMAGE)

Northwestern University

Element Fingerprint

Caption

Gamma ray spectra resolved by cesium lead bromide (CsPbBr3) detector. The radioactive isotopes used are americium-241 (half-life 432.2 years) and cobalt-57 (half-life 270.9 days). Each isotope possesses its own "fingerprint": a different decay behavior and a unique characteristic gamma-ray emission spectrum.

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Northwestern University

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