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公开(公告)号：US20250020816A1
公开(公告)日：2025-01-16
申请号：US18704729
申请日：2022-10-26
Applicant: Smiths Detection Inc.
Inventor： Pavlo BATURIN
Abstract: Systems and methods for suppressing X-ray interference in radiation portal monitors are provided. A radiation portal monitor includes a scintillator configured to convert high energy photons into low energy photons, and a photomultiplier tube (PMT) coupled to the scintillator, the PMT including a photocathode configured to convert the low energy photons into electrons, and a series of dynodes configured to cascade the electrons to facilitate detecting gamma events. The radiation portal monitor further includes an electron deflecting arrangement configured to selectively deflect the electrons before they encounter the series of dynodes.
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