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一种只有8毫米直径、小巧而坚固的光电倍增管已经试制成功。管子的电子倍增部分是一个单通道倍增器。光电子从5毫米直径的阴极飞出,经静电聚焦进入通道倍增器,而不需要喇叭口或者阴极——通道偏压。这种光电倍增管是一种两端器件,不必外接电阻。由于这种管子的高增益特性(3000伏时达～10~8)和具有单个电子脉冲幅度的分布(FWHM≤0.6),因此应用于脉冲计数特别理想。由于管子直径小,因此可用于密集阵列和作闪烁成象的基板。该管子甚至在高增益情况下(即平均每次闪烁产生大于10~9阳极电子),仍具有极高分辨率,因此可用作闪烁光谱分析仪。这种结构也可用在无窗结构中作粒子或者X射线探测器。在这种改进的仪器中,其孔径可达5×7毫米~2。另一种用途是在俄歇谱仪器中作探测器用。在这种仪器中,在高增益的输出脉冲情况下,可以应用精确的数字数据处理技术并具有长的无漂移积分时间。
A compact, rugged photomultiplier tube of just 8 mm in diameter has been trial-produced. The electron multiplier section of the tube is a single-channel multiplier. Photoelectrons fly from a 5 mm diameter cathode and are electrostatically focused into the channel multiplier without the need for a bell mouth or cathode-channel bias. This photomultiplier tube is a two-terminal device, no external resistance. Due to the high gain characteristics of this tube (~ 10 ~ 8 at 3000 V) and the distribution with a single electron pulse amplitude (FWHM ≤ 0.6), it is particularly desirable to apply pulse counting. Due to the small tube diameter, it is useful for dense arrays and substrates for scintillation imaging. The tube is still useful as a scintillation spectrometer, even with high gain (ie, an average of more than 10 to 9 anodes per flash) with very high resolution. This structure can also be used in the windowless structure as a particle or X-ray detector. In this improved instrument, its aperture up to 5 × 7 mm ~ 2. Another use is for detectors in Auger instruments. In this instrument, accurate digital data processing techniques and long drift-free integration time can be applied with high-gain output pulses.