On the Nature of the Medium Lifetime Component of Positron Annihilation in a Teflon Polymer

Wang Shuying; Zhang Tianbao; Shentu Yanming; Wang Haidong; Yang Guangming

Chinese Physics C> 1990, Vol. 14> Issue(S1) : 11-18

On the Nature of the Medium Lifetime Component of Positron Annihilation in a Teflon Polymer

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing

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Abstract：
The nature of the medium lifetime component of positron annihilation in a Teflon (PTFE) polymer has been investigated by usiiig a recently developed Time Selecting γ Energy Spectrometer with and without a magnetic field. It has been assigned to o-Ps quenching annihilation, just the same as the longest lifetime component.

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Wang Shuying, Zhang Tianbao, Shentu Yanming, Wang Haidong and Yang Guangming. On the Nature of the Medium Lifetime Component of Positron Annihilation in a Teflon Polymer[J]. Chinese Physics C, 1990, 14(S1): 11-18.

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Received: 1989-02-13

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