光电倍增管的基本结构很简单,可以手工制造,因此甚至可以根据请求定制单个产品。由于形状、尺寸、光谱响应范围或检测波长范围和其他特性可以定制,因此光电倍增管广泛用于许多用途,包括需要高灵敏度光电检测器的行业、医疗和学术研究。
我们通过结合各种类型的光阴极面、窗材和玻璃灯泡形状,提供具有不同检测波长范围的广泛产品阵容。
受光窗材料确定光电倍增管光谱响应范围内的短波长界限。
光电倍增管通过利用外部光电效应(即当光在真空中撞击金属或半导体时电子释放到真空中的现象)来检测光。
具有良好结晶质量的高性能光阴极面可在真空中制造,并且能够将单个光子转换成电子。
在真空中,只有信号被放大,因此可以高灵敏度检测低光量光。
在受光窗的内侧(真空)上形成的光敏薄膜。它将通过受光窗进入的光转换为光电子。
电子倍增器由多个称为倍增器电极的电极组成。从光阴极面释放的光电子通过施加到聚焦电极的电压加速,以冲击生成二次电子的第一倍增器电极的二次发射表面。在电子倍增器的所有倍增器电极中重复此过程,以这种方式将信号放大超过一百万倍。
电子倍增器有多种类型,具有不同的时间响应、输出线性度、紧凑性和耐用性,可根据用途目的进行选择。
我们一直在努力提高光电倍增管的灵敏度,以捕获更低光量的光线,并改善其他特性,以确保更高精度的检测。我们致力于实现更高的光电倍增管性能,这是满足客户需求的永无止境的努力。
用于科学研究的 20 英寸直径光电倍增管
设施名称 | Kamiokande (从 1983 年到 1996 年) |
SuperKamiokande (从 1996 年至今) |
HyperKamiokande (规划阶段) |
---|---|---|---|
型号 | R1449 | R3600 | R12860 |
采集效率 | 40% 至 50% | 70 % | 90 % |
电子渡越时间分散度 | 8.0 ns | 5.5 ns | 2.4 ns |
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