Results 241 to 250 of about 9,385,834 (281)

Advances in neutron imaging

Materials Today, 2018
Imaging techniques based on neutron beams are rapidly developing and have become versatile non-destructive analyzing tools in many research fields. Due to their intrinsic properties, neutrons differ strongly from electrons, protons or X-rays in terms of ...
N. Kardjilov, I. Manke, R. Woracek, A. Hilger, J. Banhart   +4 more
semanticscholar   +1 more source

NEUTRON IMAGING IN A HOSPITAL ENVIRONMENT

Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications, 2008
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Scazzi Selene, Bolognini Davide, Mascagna Valerio, Mattera A, Prest Michela, Bartesaghi Giacomo, Conti Valentina, Mozzanica Aldo, Cappelletti Paolo, Frigerio Milena, Gelosa Stefania, Monti Angelo Filippo, Ostinelli Angelo, Giannini Gianrossano R, Vallazza Erik, Basilico Fabrizio, Mauri Pierluigi   +16 more
openaire   +3 more sources

Coded source neutron imaging

SPIE Proceedings, 2011
Coded aperture techniques have been applied to neutron radiography to address limitations in neutron flux and resolution of neutron detectors in a system labeled coded source imaging (CSI). By coding the neutron source, a magnified imaging system is designed with small spot size aperture holes (10 and 100μm) for improved resolution beyond the ...
Philip R. Bingham, Hector J. Santos-Villalobos, Kenneth W. Tobin   +2 more
openaire   +2 more sources

Application of neutron imaging to investigate fundamental aspects of durability of cement-based materials: A review

Cement and Concrete Research, 2018
Service life and durability of reinforced concrete structures have become crucial issues in all industrialized countries because of their economic and ecological relevance.
Peng Zhang, F. Wittmann, P. Lura, H. Müller, Song-Bai Han, Tie-Jun Zhao   +5 more
semanticscholar   +1 more source

Hydrogen diffusion and precipitation in duplex zirconium nuclear fuel cladding quantified by high-resolution neutron imaging

Journal of Nuclear Materials, 2019
Hydrogen distribution in zirconium nuclear fuel claddings can often be non-uniform because of the high mobility of hydrogen interstitial atoms, raising the risk to the fuel rod integrity.
Wei-Jia Gong, P. Trtik, A. Colldeweih, L. Duarte, M. Grosse, E. Lehmann, J. Bertsch   +6 more
semanticscholar   +1 more source

Neutron beam imaging at neutron spectrometers at Dhruva

AIP Conference Proceedings, 2012
A low efficiency, 2-Dimensional Position Sensitive Neutron Detector based on delay line position encoding is developed. It is designed to handle beam flux of 106-107 n/cm2/s and for monitoring intensity profiles of neutron beams. The present detector can be mounted in transmission mode, as the hardware allows maximum neutron transmission in sensitive ...
Shraddha S. Desai, Mala N. Rao
openaire   +1 more source

A neutron optical periscope used for neutron imaging

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009
A standard neutron guide is ill suited for neutron imaging, because reflections in the guide destroy the collimation of the neutron beam and let the cross-section of the neutron guide act as a divergent area source. Good neutron imaging installations use a flight tube instead, but with direct sight they also have a large background of gamma radiation ...
Burkhard Schillinger, Peter Böni, Christian Breunig, Elbio Calzada, C. Leroy, Martin Mühlbauer, Michael Schulz   +6 more
openaire   +1 more source

Imaging with cold neutrons

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011
Abstract Neutrons for imaging purposes are provided mainly from thermal beam lines at suitable facilities around the world. The access to cold neutrons is presently limited to very few places only. However, many challenging options for imaging with cold neutrons have been found out, given by the interaction behavior of the observed materials with ...
Lehmann, E.H., Kaestner, A., Josic, L., Hartmann, S., Mannes, D.   +4 more
openaire   +2 more sources

Performance optimization of the neutron-sensitive image intensifier used in neutron imaging

Chinese Physics B
Abstract As a non-destructive testing technology, neutron imaging plays an important role in various fields, including material science, nuclear engineering, and fundamental science. An imaging detector with a neutron-sensitive image intensifier has been developed and demonstrated to achieve good spatial resolution and timing resolution.
Jinhao 金昊 Tan 谭, Yushou 玉收 Song 宋, Jianrong 健荣 Zhou 周, Wenqin 文钦 Yang 杨, Xingfen 兴奋 Jiang 蒋, Jie 杰 Liu 刘, Chaoyue 超月 Zhang 张, Xiaojuan 晓娟 Zhou 周, Yuanguang 远光 Xia 夏, Shulin 术林 Liu 刘, Baojun 保军 Yan 闫, Hui 辉 Liu 刘, Songlin 松林 Wang 王, Yubin 豫斌 Zhao 赵, Jian 建 Zhuang 庄, Zhijia 志嘉 Sun 孙, Yuanbo 元柏 Chen 陈   +16 more
openaire   +1 more source

Neutron Imaging Camera

IEEE Nuclear Science Symposuim & Medical Imaging Conference, 2010
We describe the Neutron Imaging Camera (NIC) being developed for the detection of special nuclear material by NASA/Goddard Space Flight Center (GSFC) and NSWC/Carderock. The NIC is a self-contained, robust, omnidirectional, and 3He-independent neutron detector based on the Three-Dimensional Track Imager (3-DTI) technology developed at GSFC for gamma ...
null Seunghee Son, G A de Nolfo, M P Dion, S D Hunter, N A Guardala   +4 more
openaire   +1 more source