公开(公告)号：US20240274393A1

公开(公告)日：2024-08-15

申请号：US18568468

申请日：2022-02-14

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Naonobu SUZUKI ,  Astushi ISHII ,  Ryosuke YABUSHITA ,  Akimichi SHIMIZU ,  Naofumi KOSUGI ,  Ginji SUGIURA

IPC: H01J35/14 ,  H01J35/18

CPC classification number: H01J35/153 ,  H01J35/18

Abstract: An X-ray generation device includes: a housing; an electron gun including an electron-emitting unit that emits an electron inside the housing; a target that generates an X-ray upon an incidence of the electron inside the housing; a window member that seals an opening of the housing and that transmits the X-ray; a tube voltage application unit that applies a tube voltage between the electron-emitting unit and the target; and a magnetic field-forming unit for deflecting the electron by forming a magnetic field between the electron-emitting unit and the target. A thickness of the target has a distribution, and the target is disposed such that the electron is incident on a portion of the target which is relatively thinner in the thickness when the tube voltage is relatively low than when the tube voltage is relatively high.