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Search Publications

NIST Authors in Bold

Displaying 526 - 550 of 3756

Manipulating Interface Magnetism in Manganite Thin Film Membranes by Substrate Surface Chemistry

November 13, 2024
Author(s)
Purnima P. Balakrishnan, Qinwen Lu, Qing Wang, Shinichiro N. Muramoto, Paige Quarterman, Michael R. Fitzsimmons, Timothy R. Charlton, Xiaofang Zhai, Alexander Grutter
… work, we use polarized neutron reflectometry and secondary ion mass spectroscopy to provide a detailed understanding of … plays a key role in either incorporating or excluding hydrogen species at the surfaces of transferred LaMnO3 thin … freestanding films, hydrogen incorporation, hydrophobicity, magnetic anisotropy, …

Asymptotic and Numerical Analysis of a Premixed Laminar Nitrogen Dioxide-Hydrogen Flame

January 1, 1995
Author(s)
Gregory T. Linteris, F A. Williams
… of eighty-some reactions for flames in mixtures of hydrogen and nitrogen dioxide is systematically reduced to … premixed flames, laminar flames, nitrogen dioxide, hydrogen, burning rate, flame structure … Numerical Analysis of a Premixed Laminar Nitrogen Dioxide-Hydrogen Flame …

Emission-Line Intensity Ratios in FeXVII Observed with a Microcalorimeter on an Electron Beam Ion Trap

December 1, 2000
Author(s)
J M. Laming, I Kink, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, A K. Bhatia, G. A. Doschek, N. Madden, D Landis, J. Beeman, E. E. Haller
… Institute of Standards and Technology electron beam ion trap (EBIT) with a microcalorimeter detector. . . .Both … atoms, electron beam ion trap, emission-line intensity ratios, intensity ratios, … Observed with a Microcalorimeter on an Electron Beam Ion Trap …

Heavy Ion Induced Soft Breakdown of Thin Gate Oxides

December 1, 2001
Author(s)
J. F. Conley, John S. Suehle, A. H. Johnston, Bin Wang, T Miyahara, Eric M. Vogel, J B. Bernstein
… Heavy ion induced soft and hard breakdown are investigated in thin … reliability, radiation effects, soft breakdown, heavy ion irradiation, microelectronics … Heavy Ion Induced Soft Breakdown of Thin Gate Oxides …

Selectable Resistance-Area Product by Dilute Highly Charged Ion Irradiation

August 13, 2007
Author(s)
Joshua M. Pomeroy, Holger Grube, A C. Perrella, John D. Gillaspy
… from a single process recipe using highly charged ion (HCI) irradiation. The HCI irradiation occurs after … tunnel barrier. The neutralization of the highly charged ion on the tunnel barrier surface (Xe44+) ablates a small … Selectable Resistance-Area Product by Dilute Highly Charged Ion Irradiation …

Dielectronic resonances of LMn and LNn (? 4) series in highly-charged M-shell tungsten ions

March 4, 2020
Author(s)
Dipti Goyal, A. Borovik, Jr., R. Silwal, Joan M. Dreiling, Amy C. Gall, Endre Takacs, Yuri Ralchenko
… 4) dielectronic resonances (DR) in highly-charged M-shell ions of tungsten. The x-ray emission from W$^49+}$ through … resonances, Collisional-radiative modeling, M-shell ions. … and LNn (? 4) series in highly-charged M-shell tungsten ions …

Observations and identifications of extreme ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap

August 23, 2023
Author(s)
Yang Yang, Dipti Dipti, Chihiro Suzukic, A. C. Gall, R. Silwal, Samuel Sanders, Joseph N. Tan, Aung S. Naing, Endre Takacs, Yuri Ralchenko
… Ca-like, Nd40+, through Nalike, Nd49+, highly charged ions have been measured at an electron beam ion trap (EBIT) facility at the National Institute of … EUV spectroscopy, neodymium, electron beam ion trap, collisional-radiative modeling, line identification … ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap …

Measurement of Uranium-236 in Particles by Secondary Ion Mass Spectrometry

January 12, 2017
Author(s)
David S. Simons, John D. Fassett
… of the relative isotopic abundance by secondary ion mass spectrometry of 236U in uranium-containing material … hydride, isotope, isotopic abundance, particle, secondary ion mass spectrometry, SIMS, uranium … Measurement of Uranium-236 in Particles by Secondary Ion Mass Spectrometry …

Estimation of the critical external heat leading to the failure of lithium-ion batteries

June 29, 2020
Author(s)
Wei Tang, Andy Tam, Liming Yuan, Thomas Dubaniewicz, Richard Thomas, John Soles
… critical external heat leading to the failure of lithium-ion (Li-ion) batteries was conducted using an Accelerating Rate … Safety and Health (NIOSH). Several types of commercial Li-ion batteries were selected, including iron phosphate Li-ion … Lithium-ion battery, Accelerating Rate Calorimetry, Heat to failure, …

Potential energy surface for interactions between two hydrogen molecules

September 4, 2008
Author(s)
Allan H. Harvey, Konrad Patkowski, Wojciech Cencek, Piotr Jankowski, Krzysztof Szalewicz, Giovanni Garberoglio
… energies of interaction between two ground-state hydrogen molecules with intramolecular distances fixed at … computational chemistry, hydrogen, potential energy surface, second virial coefficient … Potential energy surface for interactions between two hydrogen molecules …

Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions

February 1, 2002
Author(s)
Karl K. Irikura, Yong Sik Kim, M A. Ali
… 6 + , and H 3 O + . The cross sections for the hydrocarbon ions are needed for modeling cool plasmas in fusion devices. … , CH 4 + , electron-impact ionization, H 3 O + , molecular ions … Total Ionization Cross Sections of Hydrocarbon Ions …

Hydrogen Concentration-Induced Stresses in an Environmental TEM

April 25, 2022
Author(s)
Matthew Connolly, Veruska Malave, May Martin
… The hydrogen-enhanced localized plasticity (HELP) mechanism is a leading candidate among proposed hydrogen embrittlement (HE) mechanisms. Transmission electron … of an increased dislocation mobility on exposure to hydrogen have provided the most direct evidence for the HELP …

Measurements and Modeling of Ion Energy Distributions in High-Density, Radio-Frequency Biased CF 4 Discharges

May 1, 2002
Author(s)
Mark A. Sobolewski, Yicheng Wang, A N. Goyette
… Models of ion dynamics in radio-frequency (rf) biased, high-density plasma sheaths are needed to predict ion bombardment energies in plasma simulations. To test these models, we have measured ion energy distributions (IEDs) in pure CF 4 discharges at … CF4, high-density plasma, inductively coupled discharge, ion energy distribution, plasma processing, radio-frequency …

Toward 3D printed hydrogen storage materials made with ABS-MOF composites

September 26, 2017
Author(s)
Megan C. Kreider, Zeeshan Ahmed, Makfir Sefa, James A. Fedchak, Julia Scherschligt, Michael Bible, Nikolai Klimov, Bharath Natarajan, Hartings Mathew
… effort to generate materials that are capable of storing hydrogen. Metal-organic framework materials (MOFs) have been … composite plastic, hydrogen storage, sensor, additive manufacturing, 3d printing … Toward 3D printed hydrogen storage materials made with ABS-MOF composites …

Equilibration of the planar modes of ultracold two-dimensional ion crystals in a Penning trap

May 11, 2020
Author(s)
Chen Tang, Athreya Shankar, Daniel Dubin, Dominic Meiser, Scott Parker, John J. Bollinger
… direct numerical simulations of ultracold two-dimensional ion crystals in a Penning trap with a rotating wall. The … in-plane modes and improve the performance of single plane ion crystals for quantum information processing. … of the planar modes of ultracold two-dimensional ion crystals in a Penning trap …

Changes in Lactate and Other Ions in Plaque and Saliva After a Fluoride Rinse and Subsequent Sucrose Administration

January 1, 2002
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, A L. Galvin
… studies showing a pH mediated increase in the latter ions, was due to salivary clearance or diffusive loss into … of the rinses. Similarly the site distribution of all ions appeared to be not only controlled by these factors … (fluoride, sucrose and water), as well as the clearance of ions into these components require further study if a …

Internal Rotation and Spin Conversion of CH 3 OH in Solid Para-Hydrogen

January 20, 2006
Author(s)
Y J. Wu, R M. Lees, L H. Xu, Jon T. Hougen, Yuan-Pern Lee
… The quantum solid para-hydrogen (p-H2) has recently emerged as a novel host for … rotation, methanol, nuclear spin conversion, solid para hydrogen, torsional splittings … Rotation and Spin Conversion of CH 3 OH in Solid Para-Hydrogen …

Spectroscopic analysis of M- and N-intrashell transitions in Co-like to Na-like Yb ions

December 19, 2021
Author(s)
Yuri Ralchenko, Dipti Goyal, Roshani Silwal, Endre Takacs, Joan Dreiling, Samuel Sanders, Amy Gall, Hemalatha Rudramadevi, John Gillaspy
… spectra from Co-like Yb$^43+}$ through Na-like Yb$^59+}$ ions produced in an electron beam ion trap (EBIT) at the … and magnetic-dipole transitions in the above mentioned ions were identified and discussed. … M- and N-intrashell transitions in Co-like to Na-like Yb ions …

Dynamics of Hydroxyl Anions Promotes Lithium Ion Conduction in Antiperovskite Li 2 OHCl

October 13, 2020
Author(s)
Fei Wang, Hayden Evans, Kwangnam Kim, Liang Yin, Yiliang Li, Ping-Chun Tsai, Jue Liu, Saul H. Lapidus, Craig Brown, Donald J. Siegel, Yet-Ming Chiang
… been reported, but in which the atomic-level mechanism of ion migration is unclear. The stable phase is highly … together show conclusively that the high lithium ion conductivity of cubic Li 2 OHCl is correlated to … Ion conductor, plastic crystals, Maximum entropy method, …
Displaying 526 - 550 of 3756
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