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Author: david jacobson

Displaying records 11 to 20 of 56 records.
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11. Neutron Imaging Investigation of Liquid Water Distribution in and the Performance of a PEM Fuel Cell
Published: 7/1/2008
Authors: J Park, X Li, D Tran, T Abdel-Baset, Daniel S Hussey, David L Jacobson, Muhammad Arif
Abstract: In this study neutron radiography is applied to investigate the performance of a PEM fuel cell based on the effect of liquid water accumulation in the cell. Dynamic performance tests have been carried out on a PEM fuel cell with a specially designed ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841203

12. Neutron Collimation with Microchannel Plates: Calibration of Existing Technology and Near Future Possibilities
Published: 11/1/2007
Authors: Robert G Downing, Daniel S Hussey, A S Tremsin, David F. R. Mildner, W B Feller, David L Jacobson, Muhammad Arif, O H Siegmund
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904280

13. In-Situ Investigation of Water Transport in an Operating PEM Fuel Cell Using Neutron Radiography: Part 2 - Transient Water Accumulation in an Interdigitated Cathode Flow Field
Published: 7/27/2007
Authors: Jon P Owejan, T Trabold, David L Jacobson, D Baker, Daniel S Hussey, Muhammad Arif
Abstract: An interdigitated cathode flow field was tested in-situ with neutron radiography to measure the water transport through the porous gas diffusion layer in a PEM fuel cell. Constant current density to open circuit cycles were tested and the resulting ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841167

14. Neutron Images of the Through-Plane Water Distribution of an Operating PEM Fuel Cell
Published: 7/27/2007
Authors: Daniel S Hussey, David L Jacobson, Muhammad Arif, Jon P Owejan, Jeffrey J Gagliardo, T Trabold
Abstract: Neutron imaging has proven an invaluable tool for water metrology in operating proton exchange membrane fuel cells. Due to limitations in scintillator-based detector resolution, neutron imaging has been applied only to assessing the in-plane water di ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841205

15. Voltage Instability in a Simulated Fuel Cell Stack Correlated to Cathode Water Accumulation
Published: 7/22/2007
Authors: Jon P Owejan, T Trabold, Jeffrey J Gagliardo, Robert N Carter, Daniel S Hussey, David L Jacobson, Muhammad Arif
Abstract: Single fuel cells running independently are often used for fundamental studies of water transport. It is also necessary to assess the dynamic behavior of fuel cell stacks comprised of multiple cells arranged in series, thus providing many paths for f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841206

16. Neutron Collimation With Microchannel Plates: Calibration of Existing Technology and Near
Published: 4/1/2007
Authors: A S Tremsin, Daniel S Hussey, David L Jacobson, Muhammad Arif, Robert G Downing, W B Feller, David F. R. Mildner
Abstract: A new type of high performance and compact neutron collimator can be manufactured from Gd- or B-doped microchannel plates (MCPs). Structures only a few mm thick have very narrow rocking curves and high out-of-angle rejection ratios, as observed previ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841190

17. A High Spatial Resolution Event Counting Neutron Detector Using Microchannel Plates and Cross Delay Line Readout
Published: 1/1/2007
Authors: O H Siegmund, A Martin, W B Feller, Muhammad Arif, Daniel S Hussey, David L Jacobson
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101059

18. Reciprocal Space Approaches to Neutron Imaging
Published: 1/1/2007
Authors: D A Pushin, Muhammad Arif, David L Jacobson, M G Huber, D G Cory
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101020

19. Real Time Imaging of Liquid Water in an Operating Proton Exchange Membrane Fuel Cell
Published: 3/27/2006
Authors: M A Hickner, N P Siegel, K S Chen, D N McBrayer, Daniel S Hussey, David L Jacobson, Muhammad Arif
Abstract: No abstract included.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841169

20. Capillary Pressure Measurements of the Gas Diffusion and Catalyst Layers in PEMFCs
Published: 1/1/2006
Authors: T V Nguyen, G Lin, H Ohn, Daniel S Hussey, David L Jacobson, Muhammad Arif
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103272



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