Download or read book An Investigation of Trach etch Imaging Techniques for Thermal Neutron Radiography written by James A. Morley and published by . This book was released on 1971 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of Track etch Imaging Techniques for Thermal Neutron Radiography written by James A. Morley and published by . This book was released on 1971 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Applications of Neutron Radiography and Gaging written by Symposium on Practical Applications of Neutron Radiography and Gaging and published by ASTM International. This book was released on 1976 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Imaging and Applications written by Ian S. Anderson and published by Springer. This book was released on 2011-09-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron Imaging and Applications offers an introduction to the basics of neutron beam production in addition to the wide scope of techniques that enhance imaging application capabilities. An instructional overview of neutron sources, detectors, optics and spin-filters allows readers to delve more deeply into the discussions of radiography, tomography and prospective applications available in neutron holography techniques. A section devoted to current applications describes imaging single grains in polycrystalline materials, neutron imaging of geological materials and other materials science and engineering areas. Coverage of thermal neutron imaging of biological tissues, plant physiology, Homeland Security and contraband detection explore the future prospects of this cutting-edge research. Written by key experts in the field, researchers and engineers involved with imaging technologies will find Neutron Imaging and Applications a valuable reference.
Download or read book Exploring Fast Neutron Computed Tomography for Non destructive Evaluation of Additive Manufactured Parts written by Ibrahim Oksuz and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron imaging is one of the most powerful non-invasive investigation modalities that finds many applications in various fields such as nuclear industry, homeland security, battery research, and archeology. It provides information about the internal structures of an object as neutrons are absorbed and transmitted at different levels in the object in question. It is complementary to X-ray imaging due to the different interaction mechanisms of X-ray and neutrons with materials. Neutron imaging applications can employ neutrons with different energies. Fast (MeV) neutrons have some advantages such as causing less radioactive transmutation in samples and providing deeper penetration which allows for exploring thicker and denser samples. It also provides good contrast images of objects made of a mix of hydrogenous and metallic elements. With the advent of the CCD technology, new opportunities have become available to perform neutron radiography, which provides 2D images of objects, and tomography, which yields information about objects in 3D, more efficiently. Digital neutron radiography allows the collection and storage the information in a digital environment, which enables a better and quicker data analysis. However, performing neutron imaging requires a well-characterized neutron source and a proper neutron imager, especially if fast neutrons are utilized as their interaction cross sections with materials are relatively smaller. This work explores the advancement of the fast neutron radiograph and tomography. The work includes studies comprising characterizing neutron detectors for fast imaging application, characterizing a fast neutron beam facility, performing fast neutron tomography using various imaging phantoms, and investigating spatial resolution in a fast neutron imaging system. In one study, Polyvinyl Toluene (PVT) (C9H10) based plastic scintillators with different dimensions and flours were investigated in terms of their relative light outputs and spatial resolutions. Due to high hydrogen concentration, PVT scintillators would be a suitable candidate since fast neutrons deposit higher energy as they interact mainly via elastic scattering reactions. This study resulted that thicker scintillators yield higher light output due to a higher amount of scintillation materials whereas they performed worse in spatial resolution because of more neutrons and light scattering. Another study was related to characterizing the Ohio State University Research Reactor (OSURR)’ recently built fast neutron beam facility. Models of the beamline and beam stop were created, and Monte-Carlo simulations were performed to determine the neutron energy spectrum, neutron, and gamma-ray flux, and dose rate distributions. Various thermal neutron filters were investigated, and Cadmium ratios that they provide were experimentally determined. Gamma-ray content in the beam was obtained using Optically Stimulated Luminescence (OSL) dosimeters. Another study investigates fast neutron computed tomography (nCT) using custom-made multi-material complex objects. Total nCT data collection time was as low as 2 hours for some objects. Various materials were resolved in 3D reconstructed images of the objects. Low-Z materials comprising the objects were revealed while being shielded behind high-Z materials. The last study in this work is about the investigation of the possible effects on the system's spatial resolution in a fast neutron imaging system. Results showed that the thicker imaging objects deteriorate the spatial resolution due to the neutron scattering. Simulations provided that the neutron interaction kinematics in PVTs would also degrade the spatial resolution.
Download or read book Standard Test Method for Determining Image Quality in Direct Thermal Neutron Radiographic Examination written by American Society for Testing and Materials and published by . This book was released on 1999 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast Neutron Radiography FNR with Track Etch Technique written by E. Dühmke and published by . This book was released on 1986 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts of the 3rd International Meeting on Neutron Radiography written by International Topical Meeting on Neutron Radiography and published by . This book was released on 1998 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fast Neutron Radiography FNR with Track Etch Technique written by Eckhart Dühmke and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of High Speed Motion Neutron Radiography Techniques to Liquid Streams Injected Into a Pressurized Steel Chamber written by Dennis A. Tollefson and published by . This book was released on 1981 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high speed motion neutron radiography system has been developed at Oregon State University which is capable of taking high speed neutron radiographs of events which occur on the order of one to two milliseconds or more. This system was used previously to demonstrate the application of high speed motion neutron radiography techniques to two phase flow and to the burning of solid propellants. Results of this effort showed the burning patterns and relative distributions of the propellant and gases during the burning of these propellants. This system has been modified and the techniques adapted and further developed for the investigation of similar phenomena which occur with the burning of liquid propellants. The purpose of this thesis is to demonstrate the feasibility of using the new system and techniques for the investigation of liquid streams which were used to simulate the injection of liquid propellants into a pressurized steel chamber. Examples of the application of these new techniques to liquid streams injected into an unpressurized steel chamber are presented. The high speed system is capable of taking neutron radiography movies at frame rates up to about 11,000 frames per second, although about 5000 frames per second proved to be adequate for liquid streams. In order to use the high speed system for liquid streams several modifications and improvements were investigated, especially with regards to the synchronization method. A new fission probe method was developed which provided 100% reliability in the synchronization of events (over four orders of magnitude in time are covered) as compared with the 50% rate experienced with the previous time delay method. Other modifications include an improved method of masking of the object/event, an improved imaging system including a new image intensifier, new scintillator screens, and a new fiber optics coupling, and several methods of neutron flux enhancement. With the new system and techniques the position, distribution, and relative motion and sizes of liquid streams injected into a steel pipe or chamber could be measured. When applied to burning liquid propellants the distribution of the liquid and gas phases of the propellant could be determined. Applications of the current Oregon State University High Speed Motion Neutron Radiography Facility include the investigation of the flow dispersion patterns of liquid streams due to flow blockages or disruption objects; the investigation of diesel fuel injection mechanisms; and the investigation of a wide range of two phase flow situations, with particular emphasis on nuclear reactor related phenomena such as boiling boundaries, quench front motion, and boiling regimes.
Download or read book Image Quality in Neutron Radiography written by ROYAL ARMAMENT RESEARCH AND DEVELOPMENT ESTABLISHMENT FORT HALSTEAD (England) and published by . This book was released on 1975 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The limitations and characteristics of the technique of thermal neutron radiography developed in RARDE, using a 5 MV Linac and the (X, n) reaction in beryllium, have been determined quantitatively using MTF values obtained for various converter screens. The effective source-size has been determined to be 80-90 mm diameter at 840 mm source-to-detector distance, and the implications of this large diameter on the choice of suitable converter screens are detailed. It is shown that with a small diameter neutron source, neutron radiographs of image sharpness similar to radiographs taken with 150 kV X-rays are possible; with the present equipment the image sharpness is no better than is obtained with gamma-rays from Cobalt-60, and in most practical applications will be far worse than on any conventional X- or gamma-radiographs.
Download or read book CT Scanning written by Karupppasamy Subburaj and published by BoD – Books on Demand. This book was released on 2011-10-03 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its introduction in 1972, X-ray computed tomography (CT) has evolved into an essential diagnostic imaging tool for a continually increasing variety of clinical applications. The goal of this book was not simply to summarize currently available CT imaging techniques but also to provide clinical perspectives, advances in hybrid technologies, new applications other than medicine and an outlook on future developments. Major experts in this growing field contributed to this book, which is geared to radiologists, orthopedic surgeons, engineers, and clinical and basic researchers. We believe that CT scanning is an effective and essential tools in treatment planning, basic understanding of physiology, and and tackling the ever-increasing challenge of diagnosis in our society.
Download or read book Applied Science Technology Index written by and published by . This book was released on 1996 with total page 1704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decommissioning Techniques for Research Reactors written by International Atomic Energy Agency and published by . This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first report published by the IAEA which provides guidance on the preparation and implementation of the decommissioning of different types of research reactor. Different construction and operational features of research reactors have a major impact on the decommissioning techniques required. This report offers information on the conclusions drawn from a number of completed projects and identifies their similarities and differences. It is complemented by a computerized research reactor databank. Staff requirements, decommissioning costs waste activity are presented graphically according to reactor thermal power and integrated energy.
Download or read book Pathology of the Lungs E Book written by Bryan Corrin and published by Elsevier Health Sciences. This book was released on 2011-02-25 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an emphasis on practical diagnostic problem solving, Pathology of the Lungs, 3rd Edition provides the pulmonary pathologist and the general surgical pathologist with an accessible, comprehensive guide to the recognition and interpretation of common and rare neoplastic and non-neoplastic lung conditions. The text is written by two authors and covers all topics in a consistent manner without the redundancies or lapses that are common in multi-authored texts. The text is lavishly illustrated with the highest quality illustrations which accurately depict the histologic, immunohistochemical and cytologic findings under consideration and it is supplemented throughout with practical tips and advice from two internationally respected experts. The user-friendly design and format allows rapid access to essential information and the incorporation throughout of relevant clinical and radiographic information makes it a complete diagnostic resource inside the reporting room. Approximately 1,000 high quality full color illustrations.Provides the user with a complete visual guide to each specimen and assists in the recognition and diagnosis of any slide looked at under the microscope. Comprehensive coverage of both common and rare lung diseases and disorders. One stop consultation resource for the reporting room or study, no need to go further to get questions answered. Clinical background and ancillary radiographs incorporated throughout.Provides the user with all of the necessary diagnostic tools to make a complete and accurate pathologic report. Practical advice and tips from two of the world’s recognized experts. Provides the trainee and general surgical pathologist with time saving diagnostic clues when dealing with difficult specimens. Consistent and uniform approach incorporated for each disease and disorder (Etiology, pathogenesis, clinical features, pathologic features, differential diagnosis) User-friendly format enables quick and easy navigation to the key information required. Extensive use of summary tables, charts and graphs throughout the text. Helps simplify and clarify complex concepts and facilitates “at a glance comparisons between entities. Extensive reference list highlights landmark articles as well as including most up-to-date citations. Directs the trainee and practitioner to the most recent and authoritative sources for further reading and investigation
Download or read book INIS Atomindex written by and published by . This book was released on 1983 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Multidisciplinary Applied Physics written by Antonio Mendez-Vilas and published by Elsevier. This book was released on 2005-09-28 with total page 999 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1st International Meeting on Applied Physics (APHYS-2003) succeeded in creating a new international forum for applied physics in Europe, with specific interest in the application of techniques, training, and culture of physics to research areas usually associated with other scientific and engineering disciplines.This book contains a selection of peer-reviewed papers presented at APHYS-2003, held in Badajoz (Spain), from 15th to 18th October 2003, which included the following Plenary Lectures:* Nanobiotechnology - Interactions of Cells with Nanofeatured Surfaces and with Nanoparticles* Radiation Protection of Nuclear Workers - Ethical Issues* Chaotic Data Encryption for Optical Communications
