Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 61 for “"Radiation detection"”.
-
THz Radiation Detection Based on CMOS Technology
… There are several unique characteristics of the radiation in this frequency range such as the non-ionizing nature, since the associated power is low and therefore it is considered as safe technology in many applications. THz waves have the capability of penetrating through several materials such …
-
Statistical modeling of radiation detection and imaging system
… It could be used along with variable hardware detection system for use in adaptive SPECT imaging.
-
Characterization of silicon photomultipliers for radiation detection applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
-
Real-Time Radiation Detection within the Gastrointestinal Tract
The risk of a radiation emergency is becoming more prevalent as the misuse of nuclear facilities or technologies by terrorists or rogue nation-states continues to increase. A radiation emergency could cause instantaneous and sustained large releases of penetrating radiation, which would result in …
-
Applications of machine learning in nuclear imaging and radiation detection
… problem areas are discussed: nuclear imaging and radiation detection. The techniques to approach these problems are primarily based on a variant of Artificial Neural Network (ANN) called Convolutional Neural Network (CNN), which is one of the most popular forms of 'deep learning' technique.</p> …
-
Unmixing algorithms and materials for radiation detection in harsh environments
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
-
Growth, Characterization, and Surface Modification of Gallium Telluride For Radiation Detection
… were carried out using a 241Am (59.6 keV) radiation source and an energy resolution of 6.8% FWHM was obtained. These investigations demonstrate that both growth techniques produce high quality detector-grade GaTe crystals for nuclear radiation detection. These detectors will find a wide …
-
Implementation and simulation of mobile sensor networks for nuclear radiation detection
… of special nuclear materials, nuclear radiation detection plays an important role in national security applications. However, changing background radiation, shielding effects, and short collection time make radiation detection a challenging problem. Anomaly detection, source …
-
Development of a semi-autonomous directional and spectroscopic radiation detection mobile platform
… convey information about local sources of gamma radiation to a remote human operator. This is achieved by surrounding the detector with a lead sheath that blocks all gamma rays except those incident along the detector’s axial direction. A horizontal scan is performed by rotating the detector and …
-
Novel pixel CMOS sensors for radiation detection applications and sub-nanosecond timing measurements
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Synthesis of Inorganic-Organic Hybrid Materials Designed For Radiation Detection, Luminescence, and Gas Storage
<p>Materials discovery is the driving force behind the research presented herein. Basic research has been conducted in order to obtain a better understanding of coordination chemistry and structural outcomes, particularly within the area of trivalent lanthanides. Discovering new materials is one …
-
Dead time and count loss determination for radiation detection systems in high count rate applications
… time and the subsequent count loss estimation in radiation detection systems. The dead time is the minimum amount of time required between two events to permit detection of those events individually by a radiation detection system. If events occur during the system dead time, they are lost. Such …
-
An analytic-deliberative process for the selection and deployment of radiation detection systems for shipping ports and border crossings
… the SAFE Port act of 2006, the Domestic Nuclear Detection Office (DNDO) has been charged with the responsibility of providing the Customs and Border Protection Agency (CBP) with the capability to conduct 100% radiological screening of all containers entering the country. In an attempt to meet …
-
Development and characterization of a high resolution portable gamma spectrometer
… impact on research and development of radiation detection instrumentation. Currently, there is ample effort worldwide in the pursuit of radiation detection to maximize the accuracy and meet international standards in terms of size and specifications to enable radiation protection …
-
Methods for Radioactive Source Localization via Uncrewed Aerial Systems
… defense and industrial applications. Nuclear detection and deterrence is one such field that has given rise to many new opportunities for UAS operations. There is a need to research and develop methods to integrate existing radiation detection technology with UAS capable of flying low-altitude …
-
Single-Walled Carbon Nanotube Response to Neutron and Gamma Irradiation
… nanomaterials in the nuclear industry and within radiation detection devices. To explore the application of SWNTs in the nuclear industry, it was first deemed necessary to study how SWNTs respond to the two main types of radiation occurring in nuclear environments, neutrons and gamma rays. SWNT …
-
Applying Novel Material Characterization Techniques using Ultrafast Laser Excitation and Neutron Diffraction in Radiation Detector Crystals
… in the growth and performance of crystals for radiation detection, I develop and employ several material characterization techniques not previously implemented in the field. Two main, interconnected issues are addressed: the cracking of certain crystals during the growth process and spatial …
-
Performance characterization of functional fiber detectors: scintillating fibers with embedded photodiodes
… scenarios, the effectiveness of existing radiation detection technologies is frequently hindered by limitations in terms of portability, adaptability, and cost-effectiveness. Bridging this critical gap necessitates innovative approaches, and thus, this thesis proposes a solution in the …
-
Photogrammetry, cloud storage, virtual reality, and augmented reality to guide radiation measurement planning and visualization process
Localizing a radiation source in an urban environment is a challenge in nuclear nonproliferation and radiation detection. One approach to localize a source is to send a mobile radiation sensor network into an area of interest to collect count rate measurements at many locations in an attempt to …
Page 1 of 4