Cerenkov radiation device, preparation method and method for extracting radiation

A technology of radiation device and electron emission source, which is applied in the field of extraction of Cherenkov radiation, Cherenkov radiation device, and preparation, and can solve the problems to be improved and difficult to meet the requirements of practical applications.
CN106569248BActive Publication Date: 2019-03-01TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2019-03-01

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Abstract

The invention discloses a Cerenkov radiation device and a manufacturing method thereof, and a radiation extraction method. The Cerenkov radiation device comprises a metal cycle nanometer slit structure, a hyperbolic metamaterial structure and an electron-emitting source, wherein the hyperbolic metamaterial structure is arranged on an upper surface of the metal cycle nanometer slit structure; the electron-emitting source is arranged on an upper surface of the hyperbolic metamaterial structure; and the electron-emitting source includes an anode, a cathode and a grid electrode. The Cerenkov radiation device does not need a high voltage. A characteristic that a phase velocity of light in the hyperbolic metamaterial structure can be reduced by several orders of magnitudes compared to a velocity in a traditional material is used so that a required electronic flight speed generated by Cerenkov radiation can be greatly reduced; and then production cost generated by the Cerenkov radiation device is decreased and safety performance is increased.
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Description

technical field

[0001] The invention relates to the field of semiconductors, in particular to a Cerenkov radiation device, a preparation method and a method for extracting Cerenkov radiation. Background technique

[0002] Cherenkov radiation (Cherenkov Radiation, CR) is a kind of electromagnetic radiation produced when the speed of flying charged particles is greater than the phase speed of light in the surrounding medium. Cerenkov radiation plays an important role in many fields of science. Cerenkov radiation sources have the advantages of high power and large spectrum range. The research on various Cerenkov radiation devices has attracted many researchers around the world. In biomedicine, biological tissue labeled with radioactive elements produces charged particles that excite Cerenkov radiation in the organism, which can be used for the detection of labeled cells. In experimental physics, particle counters designed according to the principle of Cherenkov radiation are ...

Claims

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