A MEASUREMENT OF THE LINEAR POLARIZATION OF PHOTONS EMITTED FROM THREE PHOTON ANNIHILATION OF POSITRONS &amp; ELECTRONS

JIA Qi-Ka; TANG Xiao-Wei; YANG Bao-Zhong; LI Yao-Qing; YE Jing-Bo

Chinese Physics C> 1987, Vol. 11> Issue(3) : 293-299

A MEASUREMENT OF THE LINEAR POLARIZATION OF PHOTONS EMITTED FROM THREE PHOTON ANNIHILATION OF POSITRONS & ELECTRONS

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Abstract：
The gamma rays emitted from three photon annihilation of positrons and electrons were selected with a triple coincidence method and the linear polarization of one of the three photons was investigated by using Compton scattering. Under two geometric conditions of three photons annihilation (α₁=α₂=α₃=120° and α₁=90°, α₂=α₃=135°), the ratio of the scattered photons which were parallel with the annihilation plane to those perpendicular with the annihilation plane were 1.82±0.06 and 1.53±0.08, thus the linear polarization of the photons to the annihilation plane were 0.56±0.04 and 0.40±0.09.

References

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JIA Qi-Ka, TANG Xiao-Wei, YANG Bao-Zhong, LI Yao-Qing and YE Jing-Bo. A MEASUREMENT OF THE LINEAR POLARIZATION OF PHOTONS EMITTED FROM THREE PHOTON ANNIHILATION OF POSITRONS & ELECTRONS[J]. Chinese Physics C, 1987, 11(3): 293-299.

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

A MEASUREMENT OF THE LINEAR POLARIZATION OF PHOTONS EMITTED FROM THREE PHOTON ANNIHILATION OF POSITRONS & ELECTRONS

Corresponding author: JIA Qi-Ka,

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1987-06-05

Abstract: The gamma rays emitted from three photon annihilation of positrons and electrons were selected with a triple coincidence method and the linear polarization of one of the three photons was investigated by using Compton scattering. Under two geometric conditions of three photons annihilation (α₁=α₂=α₃=120° and α₁=90°, α₂=α₃=135°), the ratio of the scattered photons which were parallel with the annihilation plane to those perpendicular with the annihilation plane were 1.82±0.06 and 1.53±0.08, thus the linear polarization of the photons to the annihilation plane were 0.56±0.04 and 0.40±0.09.