Neutron detector and neutron detection method

A technology of a neutron detector and a detection method, which is applied to the measurement of semiconductor detectors, the measurement of neutron radiation, instruments, etc., can solve the problems of poor time resolution and limited counting ability, and achieve high conversion efficiency and counting rate. High, low price effect
CN104111471AActive Publication Date: 2014-10-22INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
Publication Date
2014-10-22

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Abstract

The invention provides a neutron detector and a neutron detection method. The neutron detector comprises a drift electrode for providing a drift electric field, a boron-coated gas electron multiplier structure for performing conversion on incident neutrons, a gas electron multiplier structure for performing gas amplification on primary electrons generated after neutron conversion, and a read-out electrode for reading the amplified electronic signals out. The drift electrode, the boron-coated gas electron multiplier structure, the gas electron multiplier structure and the read-out electrode are arranged in parallel and arranged in order. The boron-coated gas electron multiplier structure is formed by at least one cascaded first gas electron multiplier film, and at least one side of the first gas electron multiplier film is coated with a boron layer. The neutron detector of the invention can be used to greatly improve the neutron detection efficiency, has advantages of high counting rate and good time resolution, and can be used to realize time resolution of higher order, and at the same time, the neutron detector has advantages of a gas detector and has advantages of good gamma inhibiting ability, low cost and large-area fabrication.
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Description

technical field

[0001] The invention relates to neutron detection technology, in particular to a neutron detector and a neutron detection method. Background technique

[0002] With the improvement of the performance of the new generation of neutron science devices, new challenges are put forward for neutron detectors. The neutron beam flux is getting higher and higher, neutron detectors are required to have a high count rate, in order to improve the neutron utilization rate and shorten the measurement time, neutron detectors are required to have high detector efficiency, and the wide spatial range of measurement requires the sensitive area of ​​the detector Larger, higher spectrometer resolution requires detectors with high positional resolution (~mm).

[0003] In order to meet the above requirements, most of the existing neutron detectors currently use high-pressure 3 Neutron detection of He gas is mainly divided into two categories: one is the use of multiple position-se...

Claims

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