Coincidence Summing

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Summation Peaks

Summation peaks occur when two gamma-rays are emitted in quick succession, such that they appear to emitted instantaneously. This seemingly instantaneous emission of separate gamma-rays is known as coincidence. In this situation, the detector will see both of those energies as one larger energy deposited in the detector. The result of this is a peak on the spectrum that is larger than any characteristic gamma-ray that a source gives off. A tell-tale sign of a summation peak is a prominent peak that has the same energy as two characteristic gamma-rays of the source.


Gamma Ray Spectroscopy

Coincidence Summing Corrections

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