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Three photon annihilations of positrons and positronium in solids with two detectors in coincidence |
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| Authors: | M H Weber and K G Lynn |
| Institution: | Department of Physics, PO Box 642814, Washington State University, Pullman, WA 99164-2814, USA |
| Abstract: | The two-detector coincidence positron annihilation system at Washington State University was used to observe three-photon annihilation events of positrons. The decay of ortho-positronium (o-Ps) can be distinguished for para-Ps decay and positron two photon annihilations by the unique difference energy distribution. The apparatus was used to detect rare three-photon annihilations of positrons in metals. |
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