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Neutron detector using neutron absorbing scintillating particulates in plastic

a technology of neutron absorbing and scintillating particulates, applied in the field of neutron detectors, can solve the problem of very large volume that can be made sensitive to this neutron detector design, and achieve the effect of large volume, low cost monitoring system, and large volum

Inactive Publication Date: 2005-06-23
NEUTRON SCI
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AI Technical Summary

Benefits of technology

"The present invention is about a method for manufacturing a neutron detector that can efficiently detect high levels of neutron absorption. The detector uses scintillating particles that are distributed within a clear plastic matrix. The scintillation emissions are detected using a photomultiplier or multiple fibers. The detector can be used in a large volume and is cost-effective compared to traditional gas tubes. The invention provides a means for interrogating large volumes of scintillation material for neutron absorption using a basic design as a building block. The invention can be used in quantitation of the fissile mass within a container using the detected neutrons. The invention is advantageous for detecting fissile material in containers."

Problems solved by technology

The volume that can be made sensitive to this neutron detector design is very large.

Method used

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  • Neutron detector using neutron absorbing scintillating particulates in plastic
  • Neutron detector using neutron absorbing scintillating particulates in plastic
  • Neutron detector using neutron absorbing scintillating particulates in plastic

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Embodiment Construction

[0093] A neutron detector composed of a matrix of scintillating particles imbedded in plastic is disclosed. The present invention provides a means for manufacturing a neutron absorber / scintillating particle matrix utilizing scintillating particles having emission properties superior to ZnS(Ag). Specific applications of the material of the present invention include, but are not limited to, monitoring spent nuclear fuel rods and determining fissile mass within remote handle transuranic waste. The material of the present invention is also useful in manufacturing a neutron detector so that a large area is observable for detecting neutrons at a relatively high resolution. For instance, in one application, a resolution of approximately 1 mm is accomplished. The material of the present invention is capable of being replicated in order to provide a relatively large area (square meters) sensitive to neutrons.

[0094] The present invention is an extension of the technology disclosed in the abo...

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Abstract

A neutron detector composed of a matrix of scintillating particles imbedded in a lithiated glass is disclosed. The neutron detector detects the neutrons by absorbing the neutron in the 6Li isotope which has been enriched from the natural isotopic ratio to a commercial ninety five percent. The utility of the detector is optimized by suitably selecting scintillating particle sizes in the range of the alpha and the triton. Nominal particle sizes are in the range of five to twenty five microns depending upon the specific scintillating particle selected.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Application No. 60 / 476,001, filed Jun. 5, 2003.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not Applicable BACKGROUND OF THE INVENTION [0003] 1. Field of Invention [0004] The field of invention is neutron detectors. More particularly, the present invention relates to a neutron detector having solid absorbers. [0005] 2. Description of the Related Art [0006] Neutron detectors are useful in many applications. One such application is the monitoring of fissile material in storage containers, in spent nuclear fuel and in waste. Limiting the unauthorized transfer of fissile material is endorsed by all countries participating in the International Atomic Energy Agency (IAEA) program. The purpose of the IAEA program is to limit access to those materials needed for constructing a nuclear weapon of mass destruction. [0007] A major effort is being made to provide robus...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01T1/00G01T3/06
CPCG01T3/06
Inventor WALLACE, STEVEN
Owner NEUTRON SCI
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