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Coincidence and γ-γ angular correlation in positron decay

VP6.5.5.6
Coincidence and γ-γ angular correlation in positron decay
Coincidence and γ-γ angular correlation in positron decay

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Description

In the experiment P6.5.5.6, the spatial correlation of the two γ quanta in electron-positron pair annihilation is demonstrated. The conservation of momentum requires emission of the two quanta at an angle of 180°. Selective measurement of a coincidence spectrum leads to the suppression of non-correlated lines.

Components of equipment sets

1 559845  8  Mixed nuclide preparation, α, β, γ LD
1 559865  8  Na-22 preparation, 74 kBq LD
2 559901 Scintillation counter LD
2 559912  4  Detector output stage LD
1 559891  4  Socket for scintillator shielding LD
2 52168  8  High-voltage power supply, 1.5 kV LD
1 524013  8  Sensor-CASSY 2 LD
2 524058  8  MCA box LD
1 524220  4  CASSY Lab 2 LD
1 30042  4  Stand rod, 47 cm, 12 mm diam. LD
1 30101  4  Leybold multiclamp LD
1 666555  4  Universal clamp 0...80 mm LD
1 additionally required:
PC with Windows XP/Vista/7/8/10 (x86 or x64)

Experiment Instructions

PDF (Description from CASSY Lab) PDF (Description from CASSY Lab) P6.5.5.6 Coincidence and ?-? angular correlation in positron decay
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