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公开(公告)号：US11640902B2
公开(公告)日：2023-05-02
申请号：US17241224
申请日：2021-04-27
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Hiroshi Kobayashi , Junichi Kondo
Abstract: An ion detector includes a first dynode, a second dynode, a scintillator, a conductive layer, and a photomultiplier tube. The first dynode is configured to emit a charged particle in response to the incidence of the ion. The second dynode is configured to be given a negative potential and emit a secondary electron in response to incidence of the charged particle from the first dynode. The scintillator includes an electron incident surface arranged to receive the secondary electron from the second dynode, and is configured to convert the secondary electron into light. The conductive layer is disposed on the electron incident surface. The photomultiplier tube is configured to detect the light from the scintillator.
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公开(公告)号：US12248159B2
公开(公告)日：2025-03-11
申请号：US18009067
申请日：2021-04-12
Applicant: HAMAMATSU PHOTONICS K.K.
Inventor： Rina Konno , Shunsuke Kobayashi , Ginji Sugiura , Junichi Kondo , Yasumasa Matsuoka
Abstract: The electron tube includes a vacuum container having a light transmitting substrate, a photocathode provided on an inner surface of the light transmitting substrate, an anode provided in the vacuum container, and a prism. The prism includes a bottom surface bonded to an outer surface of the light transmitting substrate, a light incident surface, and a light reflecting surface configured to further reflect light, which is incident to the photocathode through the prism and the light transmitting substrate and reflected at an interface between the photocathode and the vacuum space, so that the light is re-enter the photocathode. The light reflecting surface has an outwardly convex curved surface shape. The light incident surface is located inward of an imaginary spherical surface that is along the light reflecting surface.
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