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Search Publications by: Terrence J Udovic (Assoc)

Displaying 76 - 92 of 92

Detection of Dynamical Transitions in Hydrogenous Materials using Transmission Measurements with Very Cold Neutrons

August 6, 2011

Author(s)

Kristina Verdal, Terrence J. Udovic, John R. Copley, John J. Rush

We have tested the transmission of very cold neutrons as a method to measure dynamical transitions in hydrogenous materials. Transmitted intensities vs. temperature at 30 Å neutron wavelength were measured for four materials which undergo phase

Comparison of FANS and ARCS Incoherent Inelastic Neutron Scattering Measurements of Hydrogen Trapped at Dislocations in Deformed Pd

July 22, 2011

Author(s)

Hyunsu Ju, Brent J. Heuser, D. Abernathy, Terrence J. Udovic

Incoherent inelastic neutron scattering (IINS) measurements of the vibrational density of states (VDOS)of hydrogen trapped at dislocations in deformed PdH 0.0013 have been performed using ARCS at the SNS and FANS at the NCNR. A comparison of data sets at

Nanoscale-hydride formation at dislocations in palladium: Ab initio theory and inelastic neutron scattering measurements

May 31, 2011

Author(s)

Dallas R. Trinkle, Hyunsu Ju, Brent J. Heuser, Terrence J. Udovic

Hydrogen arranges at dislocations in palladium to form nanoscale hydrides, changing the vibrational spectra. An ab initio hydrogen potential energy model versus Pd neighbor distances allow us to predict the vibrational excitations for H from absolute zero

Inelastic Neutron Scattering Study of Hydrogenated (Zr 55 Cu 30 Ni 5 Al 10 ) d99 Y 1 Bulk Metallic Glass

May 25, 2011

Author(s)

Andrew Chih-Pin Chuang, Yun Liu, Terrence J. Udovic, Peter K. Liaw, Ge-Ping Yu, Jia-Hong Huang

Porous Mg Formation Upon Dehydrogenation of MgH 2 Thin Films

May 2, 2011

Author(s)

Joseph A. Dura, S.T. Kelly, Paul A. Kienzle, J.-H. Her, Terrence J. Udovic, Charles F. Majkrzak, C.-J. Chung, B. M. Clemens

Nanoconfinement and Catalytic Dehydrogenation of Ammonia Borane by Magnesium-Metal-Organic Framework-74

April 20, 2011

Author(s)

Gadipelli Srinivas, Jamie Ford, Wei Zhou, Hui Wu, Terrence J. Udovic, Taner Yildirim

Sodium Magnesium Amidoborane: The First Mixed-Metal Amidoborane

March 22, 2011

Author(s)

Hui Wu, Wei Zhou, Frederick E. Pinkerton, Martin S. Meyer, Qingrong Yao, Gadipelli Srinivas, Terrence J. Udovic, Taner Yildirim, John J. Rush

Reorientational Dynamics of the Dodecahydro-Closo-Codecaborate Anion in Cs 2 B 12 H 12

March 17, 2011

Author(s)

Kristina Verdal, Terrence J. Udovic, John J. Rush, Ronald L. Cappelletti, Wei Zhou

Rapid reorientational motions of the B12H122- icosahedral anion, a key intermediate in borohydride dehydrogenation, are revealed by quasielastic neutron scattering (QENS) measurements of Cs2B12H12 between 430 K and 530 K. At 430 K, over the range of

Neutron Scattering Study of Hydrogen Dynamics in Coarse-Grained and Nanostructured ZrCr 2 H 3

January 25, 2011

Author(s)

Alexander V. Skripov, Terrence J. Udovic, John J. Rush, M.A. Uimin

Neutron Imaging Studies of Metal-Hydride Storage Beds

December 1, 2010

Author(s)

David Jacobson, Daniel Hussey, Elias Baltic, Terrence J. Udovic, John J. Rush, Robert C. Bowman

Neutron radiography and tomography were used to study the transient and steady-state distributions, respectively, of hydrogen within a prototypical, LaNi4.78Sn0.22-based hydrogen storage bed during and after various absorption and desorption steps. It was

A New Family of Metal Borohydride Ammonia Borane Complexes: Synthesis, Structures, and Hydrogen Storage Properties

October 1, 2010

Author(s)

Hui Wu, Wei Zhou, Frederick E. Pinkerton, Martin S. Meyer, Gadipelli Srinivas, Taner Yildirim, Terrence J. Udovic, John J. Rush

The Anti-Perovskite Type Hydride InPd 3 H 0.89

October 1, 2010

Author(s)

H. Kohlmann, Alexander V. Skripov, A. V. Soloninin, Terrence J. Udovic

Quasielastic neutron scattering study of hydrogen motion in NbC(0.71)H(0.28)

March 30, 2009

Author(s)

Terrence J. Udovic, Jeremy Cook, Alexander Skripov, Reinhard Hempelmann, Andrey Rempel, Aleksandr Gusev

In order to study the mechanism and parameters of H jump motion in the nonstoichiometric Nb carbides, we have performed quasielastic neutron scattering (QENS) measurements for NbC(0.71)H(0.28) over the temperature range 11- 475 K. Our results indicate that

Vibrational Density of States Measurement of Hydrogen Trapped at Disolocations in Deformed PdH0.0008

December 5, 2008

Author(s)

Brent J. Heuser, Terrence J. Udovic, Hyunsu Ju

The vibrational density of states (DOS) of hydrogen trapped at dislocations in deformed PdH 0.0008 has been measured at 4 and 295 K with incoherent inelastic neutron scattering. The vibrational DOS at 4 K exhibits features characteristic of the low

Crystal Structure of Li2B12H12: a Possible Intermediate Species in the Decomposition of LiBH4

October 4, 2008

Author(s)

Jae-Hyuk Her, Mohammed Yousufuddin, Wei Zhou, Satish Jalisatgi, James Kulleck, Jason .. Zan, Son-Jong Hwang, Robert C. Bowman, Terrence J. Udovic

The Nature of Deuterium Arrangements in YD3 and other Rare-Earth Trideuterides

September 30, 2008

Author(s)

Terrence J. Udovic, Qingzhen Huang, Antonio Santoro, John J. Rush

The efficacy of different structural models for describing the observed neutron-powder-diffraction (NPD) measurements of bulk polycrystalline YD3 as well as other hexagonal rare-earth (i.e., Nd, Tb, Dy, Ho, Er, and Tm) trideuteride powders has been

Materials Research With Neutrons at NIST

February 1, 2001

Author(s)

Ronald L. Cappelletti, Charles J. Glinka, Susan T. Krueger, Richard M. Lindstrom, Jeffrey W. Lynn, Henry J. Prask, E Prince, John J. Rush, J. Michael Rowe, Sushil K. Satija, B H. Toby, A. Tsai, Terrence J. Udovic

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