Radioactive energy spectrum analysis system based on beam combiner flickering optical fiber

Abstract

The invention discloses a radioactive energy spectrum analysis system based on a beam combiner flickering optical fiber. The radioactive energy spectrum analysis system comprises a beam combiner flickering optical fiber, a multi-mode optical fiber, a photoelectric converter, a signal processing module and an energy spectrum analysis module; the beam combiner flickering optical fiber is obtained through tapering and coupling multiple flickering optical fibers to form a sensing probe measuring radioactive environment physical parameters; one end after tapered coupling is fused to a common multi-mode optical fiber, and one end of the multi-mode optical fiber is connected to a photoelectric converter; the probe portion of the beam combiner flickering optical fiber is placed in a radioactive environment to generate scintillation photons; the scintillation photon is inputted into the photoelectric converter through the multi-mode optical fiber to obtain a corresponding electronic pulse signal, and collection analysis is performed on the electronic pulse signal through a rear end system to obtain a radioactive performance spectrum of the radioactive environment. The probe portion of the radioactive energy spectrum analysis system is skillful; a single detector has a wide measurement range; the electronic portion of the detector can be far away from the radioactive field and has a better electromagnetic stability; after beam combination of multiple flickering optical fibers, an output quantity of the photons can be effectively improved and sensitivity of the system is improved as well; and besides, radioactive energy spectrum analysis system measures the energy spectrum of the radioactive performance and can better analyze the composition of the radioactive source.

Description

technical field [0001] The invention belongs to the technical field of sensing and detection, in particular to a radiation energy spectrum measurement and analysis system that combines multiple scintillation optical fibers in parallel as a sensing probe, which can be used in nuclear industry, marine monitoring, geological exploration, biomedical engineering, guidance, etc. Positioning, aerospace and other fields can measure and analyze the dose and energy spectrum of the radiation environment in a timely and accurate manner. Compared with traditional scintillator detectors, it has the advantages of high sensitivity and long-distance detection. It is difficult to monitor and analyze radiation spectrum in strong electric field and magnetic field or harsh natural environment such as petrochemical industry, national defense scientific research and so on. Background technique [0002] Existing technologies commonly used in radiation detection and monitoring include gas ionization...

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Problems solved by technology

Another point is that most of the existing radiation detectors are for the detection of radiatio

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