Results 11 to 20 of about 13,304 (203)

Improvement and comparison of X and Neutron radiography images by Gaussian Convolution Method [PDF]

مجله علوم و فنون هسته‌ای, 2022
X-rays and neutron radiography images are one of the most effective defects and structure detection methods. The interactions between neutrons and X-rays are different in the material, and therefore, different information can be obtained from the ...
A. Movafeghi, E. Yahaghi, S.H. Mosavian, B. Rokrok   +3 more
doaj   +1 more source

First magnifying neutron/x-ray combined radiography at Shenguang laser facility

AIP Advances, 2022
Neutron/x-ray combined radiography can integrate the merits of x-ray and neutron radiography and have an enhanced non-destructive detecting capability compared to single neutron or x-ray radiography.
J. J. Li, B. Yu, T. Xu, Z. J. Chen, J. H. Zheng, L. Yao, Y. S. Dong, J. M. Yang   +7 more
doaj   +1 more source

Characterization of laser powder bed fusion metal samples using Bragg edge neutron transmission analysis. [PDF]

J Appl Crystallogr
Additive manufacturing represents a highly promising technique across various research and development sectors. In this work, Bragg edge neutron imaging is employed to characterize the crystallographic structure of additively manufactured metal samples, aiming to validate and optimize the production process.Bragg edge neutron transmission analysis is a
Dematteis M, Vigorelli L, Grazzi F, Orlandi D, Cortis D, Busi M, Costa M.   +6 more
europepmc   +2 more sources

Early signals of water limitations begin at the root-soil interface: linking rhizosphere drying to water uptake decline. [PDF]

New Phytol
Summary Understanding when and where drought stress originates in the soil–plant continuum is essential for predicting plant responses to climate change. While stomatal closure is a well‐known reaction to declining soil moisture, the precise hydraulic trigger remains unresolved.
Di Bert S, Benard P, Jia R, Wankmüller FJP, Azad S, Kaestner A, Nardini A, Brodribb TJ, Carminati A.   +8 more
europepmc   +2 more sources

Physical design of conversion screens for thermal neutron transmission imaging

He jishu, 2023
BackgroundAlthough the neutron image conversion screen is a key component of thermal neutron radiograph, its parameters can severely affect both the spatial resolution and thermal neutron-photon conversion efficiency.PurposeThis study aims to design a ...
LIU Xingyu, YU Xiaoxue, LI Hangzhou, PENG Jinqiu, YANG Xu, WU Kang, BAI Xiaohou, WANG Junrun, DENG Zhiyong, WU Lu, GAO Gentao, WAN Guorong, LIU Li, HE Peng, ZHANG Yun, ZHANG Yu, YAO Zeen, WEI Zheng   +17 more
doaj   +1 more source

Neutron Beam Characterization at Neutron Radiography (NRAD) Reactor East Beam Following Reactor Modifications

Quantum Beam Science, 2021
The Neutron Radiography Reactor at Idaho National Laboratory (INL) has two beamlines extending radially outward from the east and north faces of the reactor core.
Sam H. Giegel, Aaron E. Craft, Glen C. Papaioannou, Andrew T. Smolinski, Chad L. Pope   +4 more
doaj   +1 more source

Application of adaptive contrast enhancement algorithm based on particle swarm optimization in neutron radiography

He jishu, 2021
BackgroundDue to the imaging mechanism of neutron radiography and the limitation of neutron source, neutron radiography images are prone to lack of contrast, and it is a common method to improve image quality by contrast enhancement algorithm.PurposeThis
CAO Xuning, CHEN Size, YU Jie, ZHANG Lianxin, ZHANG Zaodi, LI Taosheng   +5 more
doaj   +1 more source

Monte Carlo simulation-aided design of a thermal neutron generator system from 241Am-Be isotopic sources

Brazilian Journal of Radiation Sciences, 2023
Collimated thermal neutron beams are obtained from neutron extraction channels in nuclear reactors for various applications in research and technology, such as neutron imaging techniques (neutron radiography, neutron radioscopy, neutron tomography, and ...
Antônio Cezar Orozco, Claudio Antonio Federico, Odair Lelis Gonçalez   +2 more
doaj   +1 more source

Comparison of different geometric configurations and materials for neutron radiography purposes based on a 241Am/Be neutron source

Journal of Taibah University for Science, 2017
The present work examines two different geometric configurations and three different lining materials that are suitable for thermal neutron radiography purposes based on a 241Am/Be neutron source.
J.G. Fantidis
doaj   +1 more source

Design calculation of a vertical thermal neutron beam for neutron radiography at Esfahan MNSR [PDF]

مجله علوم و فنون هسته‌ای, 2019
In this paper, the MCNPX code is applied for feasibility study of using the Isfahan MNSR as a neutron source for neutron radiography. To produce a good neutron beam in terms of intensity and quality, the aluminum (Al) with thickness of 0.7 cm, and ...
J Khorsandi, A Asgari, P Kavyani, J Mokhtari   +3 more
doaj   +1 more source