Time correlation of two gamma rays resulting from positronium annihilation
Time correlation of two gamma rays resulting from positronium annihilation
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正电子湮灭产生的两束伽马射线的时间相关性
DOI：
10.1103/physreva.85.042111
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Haruo Saito and Kengo Shibuya
中科院分区：
文献类型：
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作者：
Takashi Ino;Yasushi Arimoto;Hiroshi Kira;Yoshifumi Sakaguchi;Takenao Shinohara;Kenji Sakai;Takayuki Oku;Kazuhisa Kakurai;Kenji Ohoyama;橋本幸士;飯田祐己;猪野 隆;大島勇吾;軽部皓介;橋本 幸士;猪野 隆;木村憲彰;橋 本 幸士;Takashi Ino;N. Kabeya;橋 本 幸士;Takashi Ino;Haruo Saito and Kengo Shibuya
我们得到了自旋单态正电子偶素湮灭产生的波函数和时间关联。考虑到真实的实验条件，我们修改了Gauthier和Hawton [Phys.Rev.A81，062121（2010）PLRAAN 1050 -294710.1103/PhysRevA.81.062121]进行的计算。结果表明，时间关联由电子偶素的质心运动决定，Gauthier和Hawton所提出的指数衰减分量并不出现在时间关联函数中。我们还进行了一个实验，重点是时间相关函数中的指数分量。实验结果与我们的计算结果一致。
We have obtained the wave function and time correlation of tworays resulting from the annihilation of a spin-singlet positronium. We have modified the calculations made by Gauthier and Hawton [Phys. Rev. A 81, 062121 (2010)PLRAAN1050-294710.1103/PhysRevA.81.062121] in consideration of the real experimental conditions. It has been found that the time correlation is determined by the center-of-mass motion of the positronium, and that the exponential decay component shown by Gauthier and Hawton does not appear in the time-correlation function. We have also conducted an experiment focused on the exponential component in the time-correlation function. The experimental results are consistent with our calculation.