Simple Photomultiplier Tube Internal-Gating Method for Use in Subnanosecond Time-Resolved Spectroscopy
Simple Photomultiplier Tube Internal-Gating Method for Use in Subnanosecond Time-Resolved Spectroscopy
复制标题
用于亚纳秒时间分辨光谱的简单光电倍增管内选通方法
DOI：
10.1366/00037020360696017
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发表时间：
2003
影响因子：
3.5
通讯作者：
T. Araki
中科院分区：
文献类型：
--
作者：
T. Iwata;Tsuyoshi Takasu;T. Araki
我们提出了一个简单的光电倍增管（PMT）的内部门控方法用于亚纳秒时间分辨光谱学领域。在所提出的方法中，我们通过施加脉冲宽度为Tg的门信号来控制PMT中的两个倍增器电极。当控制第m个和第n（>m）个倍增器电极时，分辨时间Δt近似地由Δt = Tg -（n-m）τ给出，其中τ是在PMT中的两个倍增器电极之间行进的一团二次电子的渡越时间。原则上，可以容易地获得比栅极信号的脉冲宽度Tg短的分辨时间Δt。从基本性能测试中，我们发现，对于m = 2和n = 5的情况，获得了亚纳秒分辨率时间Δt = 0.31 ns。为了证明所提出的方法的有效性，我们进行了一个时间分辨光谱测量从白光发光二极管（LED）驱动的纳秒电流脉冲的发射。
We propose a simple photomultiplier tube (PMT) internal-gating method for use in the field of subnanosecond time-resolved spectroscopy. In the proposed method, we control two dynodes in the PMT by applying a gate signal whose pulse width is Tg. When controlling the mth and the n(>m)th dynodes, a resolution time Δt is approximately given by Δt = Tg – (n – m)τ, where τ is a transit time of a lump of secondary electrons traveling between the two dynodes in the PMT. In principle, the resolution time Δt shorter than the pulse width Tg of the gate signal can be easily obtained. From a fundamental performance test, we found that a subnanosecond resolution time Δt = 0.31 ns was obtained for the case of m = 2 and n = 5. To demonstrate the effectiveness of the proposed method, we carried out a time-resolved spectroscopic measurement of emission obtained from a white-light-emitting diode (LED) driven by a nanosecond current pulse.