A simple method of setting the energy window of positron lifetime spectrometer

Yunyu Wang; Xiping Long

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A simple method of setting the energy window of positron lifetime spectrometer

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- A simple method of setting the energy window of positron lifetime spectrometer
- Nuclear Techniques Vol. 10, Issue 4, (1987)
- 作者机构：
  
  中国科学院高能物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：02 January 1986，
  
  Published：1987-04
- 稿件说明：
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Yunyu Wang, Xiping Long. A simple method of setting the energy window of positron lifetime spectrometer[J]. Nuclear techniques, 1987, 10(4): 36-37,63.
DOI：

Yunyu Wang, Xiping Long. A simple method of setting the energy window of positron lifetime spectrometer[J]. Nuclear techniques, 1987, 10(4): 36-37,63. DOI：

摘要

最近几年，恒比微分甄别器己广泛用于正电子湮没寿命谱仪中，使该装置简化到可以不用符合方式

，只使用阳极引出。以往调试能窗是利用打拿极输出做能谱显示来解决。本文总结了在不用打拿极的情况下也可达到这个目的的经验。它的主要思想是：利用恒比微分甄别器（ORTEC 583）的输出随阈值或能窗的微分变化来确定511 keV康峰的边沿和选出具有最佳效率的能窗。方法的可靠性用直接显示的能谱做了检验，也用示波器测定了脉冲的幅度，对照结果表明是可靠而简便的。

Abstract

A simple methed of setting the energy window of positron lifetime spectrometer was proposed. In this way

the dynode signal does not have to be applied. Setting window only bases on the abrupt turn of the counting rate of anode signal.

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references

М. О. Bedwell and J. J. Paulus , IEEE Trans. Nucl. Sci ., NS-26 , 1 , 422 （ 1979 ）.

S. Nanao et al ., Proc. 5th int. conf. positron annihilation ( Japan , 1979 ), p. 387 .

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