发明名称 |
Photomultiplier with secondary electron shielding means |
摘要 |
A photomultiplier for converting an incident weak light into multiplied electrons to thereby output an electrical signal corresponding to the intensity of the incidence light. The photomultiplier comprises a photocathode for emitting primary electrons; plural dynodes for emitting secondary electrons in response to incident of the primary electrons and multiplying first secondary electrons passing between the dynodes; and shield means for preventing second secondary electrons emitted from a first dynode of the dynodes toward the photocathode from returning to the dynodes, thereby to reduce the generation of a residual pulse currents caused by the second secondary electrons and to accurately detect a main pulse current caused by the first secondary electrons.
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申请公布号 |
US4825066(A) |
申请公布日期 |
1989.04.25 |
申请号 |
US19880155842 |
申请日期 |
1988.02.12 |
申请人 |
HAMAMATSU PHOTONICS KABUSHIKI KAISHA |
发明人 |
NAKAMURA, KIMITSUGU;ITO, MASUO |
分类号 |
H01J43/06;H01J43/28;(IPC1-7):H01J40/14 |
主分类号 |
H01J43/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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