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Portable energy adjusting device for heat energy-100 MeV neutron

An energy-adjusting, portable technology, which is applied in measuring devices, neutron radiation measurement, and radiation measurement, can solve problems such as low measurement sensitivity and low detection efficiency, and achieve compact device structure, less auxiliary equipment, and light equipment. Effect

Active Publication Date: 2010-06-23
CHINA NUCLEAR CONTROL SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the detection efficiency of this design is low, and the moderated neutrons are all converted by the neutron absorbing layer method for equivalent dose equivalent (rate), and the measurement sensitivity is low.

Method used

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  • Portable energy adjusting device for heat energy-100 MeV neutron
  • Portable energy adjusting device for heat energy-100 MeV neutron

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Embodiment 1

[0013] A portable energy adjustment device for thermal energy to 100 MeV neutron equivalent dose detection, the device includes an inelastic scatterer 1, an energy response adjuster 2, a fast neutron moderator 3 and a thermal neutron detector 4, the thermal neutron detector The outer surface of 4 is wrapped with a spherical fast neutron moderator 3, and the outer surface of the fast neutron moderator 3 is evenly and symmetrically provided with 96 cylindrical grooves 5, wrapped around the outer surface of the fast neutron moderator 3 A three-dimensional skeleton type high-energy neutron non-elastic scatterer 1, the interior of the non-elastic scatterer 1 has 96 cylindrical protrusions 6 that are evenly distributed and matched with the groove 5, just inserted into the groove 5, in the groove There is a layer of energy-responsive adjustment material between 5 and protrusion 6, which is called the energy response adjuster 2, and the whole device is spherical, in which the inelastic...

Embodiment 2

[0015] A portable energy adjustment device for thermal energy to 100 MeV neutron equivalent dose detection, the device includes an inelastic scatterer 1, an energy response adjuster 2, a fast neutron moderator 3 and a thermal neutron detector 4, the thermal neutron detector The outer surface of 4 is wrapped with a spherical fast neutron moderator 3, and the outer surface of the fast neutron moderator 3 is evenly and symmetrically provided with 10 cylindrical grooves 5, which are wrapped around the outer surface of the fast neutron moderator 3 A three-dimensional skeleton type high-energy neutron non-elastic scatterer 1, the interior of the non-elastic scatterer 1 has 10 cylindrical protrusions 6 that are evenly distributed and matched with the groove 5, just inserted into the groove 5, in the groove There is a layer of energy corresponding adjustment material between 5 and protrusion 6, which is called energy response adjuster 2, and the whole device is spherical, wherein the i...

Embodiment 3

[0017] A portable energy adjustment device for thermal energy to 100 MeV neutron equivalent dose detection, the device includes an inelastic scatterer 1, an energy response adjuster 2, a fast neutron moderator 3 and a thermal neutron detector 4, the thermal neutron detector The outer surface of 4 is wrapped with a spherical fast neutron moderator 3, and the outer surface of the fast neutron moderator 3 is evenly and symmetrically provided with 48 cylindrical grooves 5, which are wrapped around the outer surface of the fast neutron moderator 3 A three-dimensional skeleton type high-energy neutron non-elastic scatterer 1, the interior of the non-elastic scatterer 1 has 48 cylindrical protrusions 6 that are evenly distributed and matched with the groove 5, just inserted into the groove 5, in the groove There is a layer of energy response adjustment material between 5 and protrusion 6, which is called the energy response adjuster 2, and the whole device is spherical, in which the i...

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PUM

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Abstract

The invention discloses a portable energy adjusting device for equivalent dose detection of a heat energy-100 MeV neutron, which comprises an inelastic scatterer, a fast neutron moderator, an energy adjustor and a thermal neutron detector. The whole device takes the shape of a ball, the thermal neutron detector is arranged at the center of a ball body and coated with the spherical fast neutron moderator; the fast neutron moderator is coated with a spherical ultrafast neutron inelastic scatterer; and the energy reaction adjustor is positioned between the fast neutron moderator and the fast neutron inelastic scatterer. The portable energy adjusting device has the advantages of compact structure and light weight and can improve the reaction of a high-energy neutron by about 30 percent as well as the sensitivity of the neutron by about 18-40 times through experimental evidence compared with the prior art.

Description

technical field [0001] The invention relates to a neutron dose detection device, in particular to a portable energy adjustment device for neutron equivalent dose detection with thermal energy up to 100 MeV. Background technique [0002] At present, most neutron dose detectors mainly measure thermal neutrons up to 14MeV, and the highest one only reaches 20MeV, and cannot measure neutron doses with higher energy. With the continuous expansion of human activity space to the high-energy neutron environment of high altitude and outer space, a portable instrument capable of measuring high-energy neutron dose (rate) is very much needed. [0003] In order to realize high-energy (100 MeV level) neutron equivalent dose (rate) detection, the existing domestic and foreign technologies usually use multiple moderating sphere methods to divide the entire energy region into multiple sub-energy regions, which are detected separately and then weighted and comprehensively measured. This type ...

Claims

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Application Information

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IPC IPC(8): G01T3/00
Inventor 汲长松
Owner CHINA NUCLEAR CONTROL SYST ENG
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