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OpenStudy (anonymous):
What is the most common source of gamma rays?
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OpenStudy (unklerhaukus):
radioisotopes
OpenStudy (anonymous):
what is that?
OpenStudy (unklerhaukus):
for example \[_{27}^{60}Co\] that is cobalt with 60 nucleons (including 27 protons and 33 neutrons) is an unstable form of cobalt that will emit gamma rays of 1.33 and 1.17 MeV
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