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Author: daniel hussey
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1. Neutron Interferometric Measusrement of the Scattering Length Difference Between the Triplet and Singlet States of N-3 He.
Published: 6/4/2014
Authors: Michael G Huber, Muhammad Arif, Wei-Chen N. Chen, Thomas R. Gentile, Daniel S Hussey, T C Black, D. A. Pushin, F. E Wiefeldt, C.B Shahi, L Yang
Abstract: We report a new determination of the n-Helium-3 scattering length difference Delta b = (−5.411 ± 0.031 (statistical) ± 0.039 (systematic) ) fm between the triplet and singlet states using a neutron interferometer. This revises our previous res ...

2. Neutron Tomography of a Fuel Cell: Statistical Learning Implementation of a Penalized Likelihood Method
Published: 10/15/2013
Authors: Kevin J Coakley, Dominic F. (Dominic F.) Vecchia, Daniel S Hussey, David L Jacobson
Abstract: At the NIST Neutron Imaging Facility, we collect neutron projection data for both the dry and wet states of a Proton-Exchange-Membrane (PEM) fuel cell. Transmitted neutrons captured in a scintillator doped with Lithium-6 produce scintillation li ...

3. Improving quantitative neutron radiography through image restoration
Published: 7/20/2013
Authors: Daniel S Hussey, Elias M Baltic, Kevin J Coakley, David L Jacobson
Abstract: This in-situ study examines the water content in polymer electrolyte fuel cells (PEFCs) using neutron radiography. Various conditions such as different polytetraflouroethylene (PTFE) loadings in the gas diffusion media including the micro-porous laye ...

4. Demonstration of Achromatic Cold-Neutron Microscope Utilizing Axisymmetric Focusing Mirrors.
Published: 4/21/2013
Authors: Daniel S Hussey, D. Liu, M. V. Gubarev, D Ramsey, David L Jacobson, Muhammad Arif, D. E Moncton, B. Khaykovich
Abstract: An achromatic cold-neutron microscope with magnification 4 is demonstrated. The image-forming optics is made of nested coaxial mirrors of full figures of revolution, so-called Wolter optics. The spatial resolution, field of view, and depth of focus a ...

5. High-resolution neutron radiography of through-plane liquid water distribution in polymer electrolyte membrane and gas diffusion layer
Published: 8/14/2012
Authors: Daniel S Hussey, David L Jacobson, Richard Fu, Ugur Pasaogullari, Takeshi Shiomi, Yuichiro Tabuchi
Abstract: We re-investigate our previously studied water transport phenomena under nonisothermal conditions by measuring the through-plane liquid water distribution across PEFC components with the state-of-the-art high-resolution neutron radiography. A correc ...

6. Probing the Water Content in Polymer Electrolyte Fuel Cells Using Neutron Radiography
Published: 5/8/2012
Authors: Daniel S Hussey, Jeffrey Mishler, Yun Wang, Rangachary Mukundan, Jacob Spendelow, Rodney Borup
Abstract: This in-situ study examines the water content in polymer electrolyte fuel cells (PEFCs) using neutron radiography. Various conditions such as different polytetraflouroethylene (PTFE) loadings in the gas diffusion media including the micro-porous laye ...

7. In Situ Neutron Techniques for Studying Lithium Ion Batteries
Published: 5/1/2012
Authors: Howard Wang, Robert G Downing, Joseph A. Dura, Daniel S Hussey
Abstract: We review {I}in situ{/I} neutron techniques for studying lithium ion batteries. Four neutron measurement techniques, neutron depth profiling (NDP), neutron reflectivity (NR), small angle neutron scattering (SANS), and neutron imaging (NI) are discus ...

8. Neutron Imaging of Lithium Concentration in Battery Pouch Cells
Published: 3/23/2011
Authors: Daniel S Hussey, David L Jacobson, Jason B. Siegel, C. Di Stefan, Xinfan Lin, David Gorsich
Abstract: This paper shows how neutron radiography can be used for in situ quantification of the lithium concentration across battery electrodes, a critical physical system state. The change in lithium concentration between the charged and discharged state ...

9. Changing Optical Axis Due To Reactor Operation
Published: 1/12/2011
Authors: Daniel S Hussey, David L Jacobson, Elias M Baltic
Abstract: During reactor operation, the neutron flux distribution is modified by the reactor control mechanisms, in the case of the reactor at the National Institute of Standards and Technology, this is determined by the angular position of the Cd shim arm ...

Published: 1/11/2011
Authors: David L Jacobson, Richard Fu, Takeshi Shiomi, Ugur Pasaogullari, Joshua Preston, Shinichi Miyazaki, Yuichiro Tabuchi, Daniel S Hussey
Abstract: A fundamental experimental and numerical study of the water transport across a perfluorosulfonic acid (PFSA) membrane under a temperature gradient is presented. The water transport phenomenon was experimentally investigated through water flux mea ...

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