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Author : Justin Clinton
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (115 download)
Download or read book Optimization and Characterization of a Novel Self Powered Solid State Neutron Detector written by Justin Clinton and published by . This book was released on 2011 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jonathan Marini
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (115 download)
Download or read book Characterization of a Novel Self-powered Solid-state Neutron Detector written by Jonathan Marini and published by . This book was released on 2011 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacky Huang
Publisher :
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (115 download)
Download or read book Fabrication and Characterization of a Novel Self-powered Solid-state Neutron Detector written by Jacky Huang and published by . This book was released on 2014 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicholas LiCausi
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (115 download)
Download or read book Design and Fabrication of a Novel Self-powered Solid-state Neutron Detector written by Nicholas LiCausi and published by . This book was released on 2011 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Academic Press
ISBN 13 : 0128228717
Total Pages : 480 pages
Book Rating : 4.1/5 (282 download)
Download or read book Ultrawide Bandgap Semiconductors written by and published by Academic Press. This book was released on 2021-07-26 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrawide Bandgap Semiconductors, Volume 107 in the Semiconductors and Semimetals series, highlights the latest breakthrough in fundamental science and technology development of ultrawide bandgap (UWBG) semiconductor materials and devices based on gallium oxide, aluminium nitride, boron nitride, and diamond. It includes important topics on the materials growth, characterization, and device applications of UWBG materials, where electronic, photonic, thermal and quantum properties are all thoroughly explored. Contains the latest breakthrough in fundamental science and technology development of ultrawide bandgap (UWBG) semiconductor materials and devices Provides a comprehensive presentation that covers the fundamentals of materials growth and characterization, as well as design and performance characterization of state-of-the-art UWBG materials, structures, and devices Presents an in-depth discussion on electronic, photonic, thermal, and quantum technologies based on UWBG materials
Author : Jia-Woei Wu
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (115 download)
Download or read book Fabrication of Cost-effective Solid-state Neutron Detectors and Characterization written by Jia-Woei Wu and published by . This book was released on 2016 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of A Self Biased High Efficiency Solid-State Neutron Detector for MPACT Applications written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron detection is an important aspect of materials protection, accounting, and control for transmutation (MPACT). Currently He-3 filled thermal neutron detectors are utilized in many applications; these detectors require high-voltage bias for operation, which complicates the system when multiple detectors are used. In addition, due to recent increase in homeland security activity and the nuclear renaissance, there is a shortage of He-3, and these detectors become more expensive. Instead, cheap solid-state detectors that can be mass produced like any other computer chips will be developed. The new detector does not require a bias for operation, has low gamma sensitivity, and a fast response. The detection system is based on a honeycomb-like silicon device, which is filled with B-10 as the neutron converter; while a silicon p-n diode (i.e., solar cell type device) formed on the thin silicon wall of the honeycomb structure detects the energetic charged particles emitted from the B-10 conversion layer. Such a detector has ~40% calculated thermal neutron detection efficiency with an overall detector thickness of about 200?m. Stacking of these devices allows over 90% thermal neutron detection efficiency. The goal of the proposed research is to develop a high-efficiency, low-noise, self-powered solid-state neutron detector system based on the promising results of the existing research program. A prototype of this solid-state neutron detector system with sufficient detector size (up to 8-inch diam., but still portable and inexpensive) and integrated with interface electronics (e.g., preamplifier) will be designed, fabricated, and tested as a coincidence counter for MPACT applications. All fabrications proposed are based on silicon-compatible processing; thus, an extremely cheap detector system could be massively produced like any other silicon chips. Such detectors will revolutionize current neutron detection systems by providing a solid-state alternative to traditional gas-based neutron detectors.
Author : S. Breaud
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)
Download or read book Selective and Prompt Self-Powered Neutron Detectors for Characterization of Mixed Radiation Fields in Reactors written by S. Breaud and published by . This book was released on 2001 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents new experimental developments of prompt self-powered neutron detectors (platinum, hafnium, gadolinium). In particular, we covered the Gd and Hf emitters with a small stainless steel tube called "the lining of the emitter," to reach three goals: to decrease the deferred noise due to the sheath, reduce the current due to low energy external gamma-rays and stop a large part of the delayed ?- rays, which are produced in the emitter. A large set of SPNDs with different thickness of lining was tested in the SILOE research reactor by means of two special dosimetry devices to study their neutron and gamma sensitivities, and their dynamic characteristics. Finally, we optimized three physically prompt neutron detectors (response times better than 0.03 s) with known sensitivities. We are now able to measure instantaneously in-line the thermal and epithermal neutron fluxes and the gamma field.
Author : Marcus L. Natta
Publisher : ProQuest
ISBN 13 : 9780549779315
Total Pages : pages
Book Rating : 4.7/5 (793 download)
Download or read book Fabrication and Characterization of Novel Boron and Gadolinium Rich Power Generation and Real-time Neutron Detection Materials and Devices written by Marcus L. Natta and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Martin Rodney Williamson
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (72 download)
Download or read book Multivariate Optimization of Neutron Detectors Through Modeling written by Martin Rodney Williamson and published by . This book was released on 2010 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the eminent shortage of 3He, there exists a significant need to develop a new (or optimize an existing) neutron detection system which would reduce the dependency on the current 3He-based detectors for Domestic Nuclear Detection Office (DNDO) applications. The purpose of this research is to develop a novel methodology for optimizing candidate neutron detector designs using multivariate statistical analysis of Monte Carlo radiation transport code (MCNPX) models. The developed methodology allows the simultaneous optimization of multiple detector parameters with respect to multiple response parameters which measure the overall performance of a candidate neutron detector. This is achieved by applying three statistical strategies in a sequential manner (namely factorial design experiments, response surface methodology, and constrained multivariate optimization) to results generated from MCNPX calculations. Additionally, for organic scintillators, a methodology incorporating the light yield nonproportionality is developed for inclusion into the simulated pulse height spectra (PHS). A Matlab® program was developed to post-process the MCNPX standard and PTRAC output files to automate the process of generating the PHS thus allowing the inclusion of nonlinear light yield equations (Birks equations) into the simulation of the PHS for organic scintillators. The functionality of the developed methodology is demonstrated on the successful multivariate optimization of three neutron detection systems which utilize varied approaches to satisfying the DNDO criteria for an acceptable alternative neutron detector. The first neutron detection system optimized is a 3He-based radiation portal monitor (RPM) based on a generalized version of a currently deployed system. The second system optimized is a 6Li-loaded polymer composite scintillator in the form of a thin film. The final system optimized is a 10B-based plastic scintillator sandwiched between two standard plastic scintillators. Results from the multivariate optimization analysis include not only the identification of which factors significantly affect detector performance, but also the determination of optimum levels for those factors with simultaneous consideration of multiple detector performance responses. Based on the demonstrated functionality of the developed multivariate optimization methodology, application of the methodology in the development process of new candidate neutron detector designs is warranted.
Author : Thomas Michael Oakes
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (872 download)
Download or read book Modeling and Analysis of a Portable, Solid-state Neutron Detection System for Spectroscopic Applications written by Thomas Michael Oakes and published by . This book was released on 2012 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses a new neutron detection system that allows local volumetric identification of fast neutron thermalization in the context of forming a solid state Bonner-like neutron spectrometer. The resulting departure and subsequent improvement from the classical Bonner spectrometer is that the entire moderating volume is sampled locally for thermal neutrons. Such volumetric resolution is possible through the layering of weakly perturbing and pixilated high thermal efficiency solid state neutron detectors into a cylindrically symmetric neutron moderator. The overall system exhibits >10% total detection efficiency over the neutron energy range from thermal to 20 MeV and the data can be acquired simultaneously from all detector elements in a single measurement. These measurements can be used to infer information on incident neutron energy spectra and direction, which provides capabilities not available in current systems. The end result is a highly efficient, man-portable device with significantly improved methods for determination of pervading neutron energy spectra and the corresponding dose equivalent.
Author :
Publisher :
ISBN 13 :
Total Pages : 1200 pages
Book Rating : 4.3/5 (91 download)
Download or read book Department of Homeland Security Appropriations for 2010, Part 1C, 111-1 Hearings written by and published by . This book was released on 2009 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew Geier Melton
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (825 download)
Download or read book Development of Wide Bandgap Solid-state Neutron Detectors written by Andrew Geier Melton and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work novel solid-state neutron detectors based on Gallium Nitride (GaN) have been produced and characterized. GaN is a radiation hard semiconductor which is commonly used in commercial optoelectronic devices. The important design consideration for producing GaN-based neutron detectors have been examined, and device simulations performed. Scintillators and p-i-n diode-type neutron detectors have been grown by metalorganic chemical vapor deposition (MOCVD) and characterized. GaN was found to be intrinsically neutron sensitive through the Nitrogen-14 (n, p) reaction. Neutron conversion layers which produce secondary ionizing radiation were also produced and evaluated. GaN scintillator response was found to scale highly linearly with nuclear reactor power, indicating that GaN-based detectors are suitable for use in the nuclear power industry. This work is the first demonstration of using GaN for neutron detection. This is a novel application for a mature semiconductor material. The results presented here provide a proof-of-concept for solid-state GaN-based neutron detectors which offer many potential advantages over the current state-of-the-art, including lower cost, lower power operation, and mechanical robustness. At present Helium-3 proportional counters are the preferred technology for neutron detection, however this isotope is extremely rare, and there is a global shortage. Meanwhile demand for neutron detectors from the nuclear power, particle physics, and homeland security sectors requires development of novel neutron detectors which are which are functional, cost-effective, and deployable.
Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Homeland Security
Publisher :
ISBN 13 :
Total Pages : 1204 pages
Book Rating : 4.F/5 ( download)
Download or read book Department of Homeland Security Appropriations for 2010 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Homeland Security and published by . This book was released on 2009 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yaacov Yehuda Zada
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (129 download)
Download or read book Optimization of a Novel Cold Neutron Detector written by Yaacov Yehuda Zada and published by . This book was released on 2015 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SOLID STATE NEUTRON DETECTOR. written by and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Horne Cooper
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (498 download)
Download or read book A Solid-state Neutron Detector written by Charles Horne Cooper and published by . This book was released on 1963 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
