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Quantum dot-based neutron spectrum measurement method

A measurement method and technology for neutron energy, applied in the field of neutron energy spectrum measurement, can solve problems such as undiscovered detectors, and achieve the effect of high energy resolution

Active Publication Date: 2014-04-16
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no detectors composed of multiple quantum dots have been found to be used for neutron spectroscopy.

Method used

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  • Quantum dot-based neutron spectrum measurement method
  • Quantum dot-based neutron spectrum measurement method
  • Quantum dot-based neutron spectrum measurement method

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Embodiment Construction

[0028] Such as figure 1 As shown, the present invention uses several different kinds of quantum dots as neutron detectors, and obtains the energy spectrum information of incident neutrons according to the differences in optical signals generated by various quantum dots for incident neutrons, and can be applied from 10 -9 MeV-650MeV neutron spectrum measurement, especially suitable for neutron spectrum measurement.

[0029] The specific implementation of the embodiment of the invention is as follows:

[0030] (1) The functional relationship between the luminescent signal intensity of the scaled quantum dot and the neutron energy: put 10 -9 The -650MeV energy range is divided into 60 energy groups, and each energy group corresponds to an energy, such as figure 2 shown. The neutron detector uses 21 kinds of quantum dots, and the peak wavelengths of the emission spectra of the 21 kinds of quantum dots are 300nm, 320nm, 350nm, 375nm, 395nm, 410nm, 430nm, 445nm, 460nm, 475nm, 49...

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Abstract

The invention provides a quantum dot-based neutron spectrum measurement method which comprises the following steps of: taking a plurality of different kinds of quantum dots as a neutron detector, and obtaining spectrum information and the like of incident neutron according to the difference of optional signals caused by various quantum dots to the incident neutron. The invention provides a novel spectrum measurement method which is suitable for the measurement of the neutron spectrum in 10<-9>MeV-100MeV.

Description

technical field [0001] The invention relates to neutron energy spectrum measurement, in particular to a neutron energy spectrum measurement method based on quantum dots, belonging to energy measurement in multidisciplinary interdisciplinary fields such as nuclear technology and application, radiation medicine and radiation biology, and radiation protection. Background technique [0002] Neutron spectrum information can provide important information for shielding design, radiation dose monitoring, and detector selection. At present, there are usually two methods for obtaining neutron spectrum information: (1) Direct measurement. The energy of a single neutron is directly measured, and the neutron energy spectrum information is obtained on the basis of statistics. The representative method is the neutron time-of-flight measurement method. The advantage of the neutron time-of-flight measurement method is that the energy resolution is high, but because the entire measurement sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T3/00
Inventor 祝庆军宋逢泉宋钢廖燕飞吴宜灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI