MEASUREMENT OF THE ENERGY SPECTRUM IN THE 3S1 POSITRONIUM 3γ DECAY

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MEASUREMENT OF THE ENERGY SPECTRUM IN THE 3S1 POSITRONIUM 3γ DECAY

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ZHANG TIAN-BAO, WANG SHO-JIE, LI YAO-QING, TANG XIAO-WEI

Acta Phys. Sin., 1983, 32(5): 670-674.

Abstract
Using a high purity Ge spectrometer with time selection, we have measured the continuous γ ray energy spectrum from the 3S1 positronium 3γ decay in the 300-510 keV energy region. The result is in agreement within the experimental error with the quantum electrodynamic theoretical calculation.
Authors and contacts
ZHANG TIAN-BAO¹,

WANG SHO-JIE²,

LI YAO-QING¹,

TANG XIAO-WEI¹

(1)中国科学院高能物理研究所; (2)中国科学院高能物理研究所,武汉大学物理系
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