A method for selecting three-photon positronium-annihilation events with a multidetector coincidence spectrometer

被引：0
|
作者：
S. K. Andrukhovich
N. Antovich
A. V. Berestov
P. Vukotich
A. A. Gurinovich
O. N. Metelitsa
A. A. Khrushchinskii
机构：
[1] Belarussian Academy of Sciences,Stepanov Institute of Physics
[2] University of Montenegro,Nature
[3] Belarussian State University,Mathematical Department
来源：
Instruments and Experimental Techniques | 2000年 / 43卷
关键词：
Background Event; Compton Scattering; Positron Source; Positronium Decay; Free Positron;
D O I：
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中图分类号：
学科分类号：
摘要：
A method for event selection takes into account all features of orthopositronium-atom annihilation. The spectral and angular distributions of positronium three-photon decay was investigated with the 4π-spectrometer ARGUS. The filtration program for the events corresponding to the three-photon positronium decay was developed, and positronium 3γ-annihilation was simulated by the Monte Carlo method. The measured spectra agree well with the simulation. The technique developed will be used to test the quantum electrodynamics of bound state.
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页码：295 / 299
页数：4
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