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Abstracts of HSHQDC-10-R-00030 Phase II Awards
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10.1-2

Company

Innovative American Technology Inc.
4800 Lyons Technology Parkway Suite 3
Coconut Creek, FL 33073-4358

Proposal Information HSHQDC-10-R-00030-1011003-II - Neutron Detectors Including Replacement for H-3
Topic Information 10.1-2 - Neutron detectors including replacement for He-3
Award/Contract Number HSHQDC-11-C-00050
Abstract

IAT has developed the 6LiFZnS(Ag) neutron detector for replacemen of 3He detectors providing neutron efficiency and gamma rejection comparable to 3He tube detectors. To increase neutron efficiency and reduce gamma events in our current detector, we propose the reduction of the ZnS(Ag)scintillation material to nano particles to enhance light transmission across the 6LiFZnS(Ag)layer. To further reduce gamma events and increase the abiltiy to separate neutron and gamma signals, we would further propose the replacement of the ZnS(Ag) scintillation material with an alternative scintillation material such as P47-Y2SiO5:Ce.

Company

Radiation Monitoring Devices, Inc.
44 Hunt Street
Watertown, MA 02472-4699

Proposal Information HSHQDC-10-R-00030-1011009-II - New Wide Bandgap Semiconductor Materials for Neutron Detection
Topic Information 10.1-2 - Neutron detectors including replacement for He-3
Award/Contract Number HSHQDC-11-C-00061
Abstract

In the proposed program, we plan to investigate novel semiconductor neutron detectors based on the wide bandgap lithium containing compositions LiGaSe2, LiGaTe2, LiInS2, and LiInSe2. The goal of the program is to produce detector quality crystals and to demonstrate efficient thermal neutron detection, with the possibility of providing neutron gamma discrimination. We will examine the synthesis and purification of high quality starting materials and the growth of single crystals. We will evaluate the electronic, charge transport, and detection response characteristics of the materials that are produced. Thermal neutron detection studies and neutron gamma discrimination will be investigated. A compact low cost solid state thermal neutron detection system based on any of these materials would be a major breakthrough over conventional thermal neutron detectors, such as 3He tubes, which are currently in short supply. This development would open up many potential commercial applications for systems based on these detectors. Beyond nuclear non-proliferation monitoring, neutron detection has important applications in several areas, including nuclear physics, oil exploration, materials characterization, biological research, nuclear waste characterization, health physics, and non destructive evaluation.

Company

Radiation Monitoring Devices, Inc.
44 Hunt Street
Watertown, MA 02472-4699

Proposal Information HSHQDC-10-R-00030-1011012-II - New Scintillator for Neutron Detection
Topic Information 10.1-2 - Neutron detectors including replacement for He-3
Award/Contract Number HSHQDC-11-C-00033
Abstract

Neutron detection is one of the methods used in revealing illicit nuclear materials. Currently, there is an ongoing search for new and better neutron detectors prompted by anticipated shortages of He-3 that is used in many of the current detection systems. This effort proposes and investigation and development of a new thermal neutron and gamma scintillator. The scintillator belongs to already proven elpasolite crystal family. The main advantages of this material are due to avoidance of Cl (parasitic neutron absorption) and La (introduces radioactive isotopes) ions in the composition. This leads to a scintillator that is more efficient for thermal neutron detection and has lower intrinsic background. The material already showed that it is capable of discrimination between neutrons and gammas, a feature required in detectors to replace He-3 tubes. In addition, like other elpasolite crystals, the material should also provide excellent gamma energy resolution. We expect it to be better than 4 percent at 662 keV, which is almost twice as good as 7 percent for NaI:Tl (the most popular gamma scintillator). Phase I of the project will investigate in detail the properties of this material and provide optimal configuration for obtaining pulse shape discrimination and energy resolution

Company

Agiltron, Inc.
15 Cabot Road
Woburn, MA 01801-1003

Proposal Information HSHQDC-10-R-00030-1011046-II - High Performance Portable Neutron Detector
Topic Information 10.1-2 - Neutron detectors including replacement for He-3
Award/Contract Number HSHQDC-11-C-00084
Abstract

A Neutron detection device is an indispensable tool for power, medical, and defense applications. Proliferation of weapons of mass destruction such as nuclear weapons is a serious threat in today's world. Low cost, low power, high performance, rugged and portable neutron detection devices are highly desirable for these applications. Agiltron proposes an unprecedented fabrication and integration approach to make these solid-state neutron detectors commercially available at low cost for large-scale deployment. The success of this project will lead to the large-scale manufacture of these unmatched next generation neutron detectors.

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