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NIST Authors in Bold

Displaying 401 - 425 of 2904

Focused Ion Beam-Induced Displacive Phase Transformation From Austenite to Martensite during Fabrication of Quenched and Partitioned Steel Micro-Pillar

January 5, 2020
Author(s)
Eun Jung Seo, Lawrence Cho, Jin Kyung Kim, Javad Mola, Lijia Zhao, Sukjin Lee, Bruno C. De Cooman
… and partitioned steel micro-pillars by using focused ion beam (FIB) technique. The BCC phase produced by the FIB … immediately after a FIB scan of the surface with the Ga+ ion beam. This report addresses challenges related to the … retained austenite, martensitic transformation, focused ion beam. …

Cluster Primary Ion Beam Secondary Ion Mass Spectrometry for Semiconductor Characterization

January 1, 2001
Author(s)
John G. Gillen, S V. Roberson, Albert J. Fahey, Marlon L. Walker, J Bennett, R Lareau
… We are evaluating the use of polyatomic and cluster primary ion beams for characterization of semiconductor materials by secondary ion mass spectrometry using both magnetic sector and time-of-flight SIMS instruments. Primary ion beams of SF 5 +, C 8 - and CsC 6 - have been used to …

Recent experiments in trapped-ion quantum information processing at NIST

May 1, 2006
Author(s)
J Chiaverini, Murray D. Barrett, Brad R. Blakestad, Joseph W. Britton, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, Dietrich G. Leibfried, R Ozeri, Tobias Schaetz, David J. Wineland
… Recent experiments in trapped-ion quantum information processing at NIST …

Recent experiments in trapped-ion quantum information processing at NIST

May 1, 2006
Author(s)
J Chiaverini, Matthew P. Barrett, Brad R. Blakestad, Joseph W. Britton, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, Dietrich G. Leibfried, R Ozeri, T Schaetz, David J. Wineland
… Recent experiments in trapped-ion quantum information processing at NIST …

Discriminative potential of ion mobility spectrometry for the detection of fentanyl and fentanyl analogues relative to confounding environmental interferents

September 27, 2019
Author(s)
Thomas Forbes, Jeffrey Lawrence, Jennifer R. Verkouteren, R. Michael Verkouteren
… discriminative potential, sensitivity and specificity, of ion mobility spectrometry (IMS) for the detection of fentanyl … in desorption and drift tube temperatures, reactant ion dopant chemistry, and analysis time. This work identified … Ion mobility spectrometry, Illicit narcotics, Fentanyl, …

On the Risk of False Positive Identification Using Multiple Ion Monitoring in Qualitative Mass Spectrometry: Large-Scale Intercomparisons With a Comprehensive Mass Spectral Library

June 1, 2006
Author(s)
Stephen E. Stein, David N. Heller
… out by comparing a few selected ions acquired by multiple ion monitoring (MIM), with due allowance for expected … roughly one order of magnitude for each additional ion selected. Our computations also showed that false … identification, mass spectral library, multiple ion monitoring (MIM), qualitative mass spectrometry …

Solvation Structure of Ions in Water

February 14, 2007
Author(s)
Raymond D. Mountain
… Molecular dynamics simulations of ions in water are reported for solutionsof varying solute … trends inproperties as the size and charge density of the ions changes.The emphasis is on how the structure of water is modified by the presenceof the ions and how many water molecules are present in the first …

A Critical Compilation of Experimental Data on the 1s2l2l0 Core-Excited States of Li-like Ions from Carbon to Uranium

October 7, 2022
Author(s)
Yuri Ralchenko, Alexander Kramida, Vladimir Azarov
… of energy levels of the 1s2l2l0 core-excited states for ions along the Li isoelectronic sequence from carbon to … levels of the 1s2l2l0 core-excited states of Li-like ions. The compiled experimental data include uncertainty … Spectroscopy, Energy Levels, Transition Energies, Li-like ions, Critical Compilation, Core-Excited States …

A Critical Compilation of Experimental Data on the 1s2l2l0 Core-Excited States of Li-like Ions from Carbon to Uranium

May 25, 2022
Author(s)
V. I. Azarov, Alexander Kramida, Yuri Ralchenko
… of energy levels of the 1s2l2l' core-excited states for ions along the Li isoelectronic sequence from carbon to … levels of the 1s2l2l' core-excited states of Li-like ions. The compiled experimental data include uncertainty … Spectroscopy, Energy Levels, Transition Energies, Li-like ions, Critical Compilation, Core-Excited States …

High Fidelity Universal Gate Set for 9Be+ Ion Qubits

August 4, 2016
Author(s)
John P. Gaebler, Ting R. Tan, Yong Wan, Yiheng Lin, Ryan S. Bowler, Adam C. Keith, Scott Glancy, Kevin Coakley, Emanuel Knill, Dietrich Leibfried, David J. Wineland
… High Fidelity Universal Gate Set for 9Be+ Ion Qubits …

NIST 38. NIST Spectroscopic Properties of Atoms and Atomic Ions Database

October 16, 2008
Author(s)
J R. Rumble
… The NIST Spectroscopic Properties of Atoms and Atomic Ions Database provides listings of prominent air or vacuum … atomic ions, atomic physics, atomic spectroscopy, energy levels, … NIST 38. NIST Spectroscopic Properties of Atoms and Atomic Ions Database …

Calcium and phosphate ion releasing composite: Effect of pH on release and mechanical properties

October 27, 2008
Author(s)
Hockin D. Xu, Michael Weir, Limin Sun
… “smart” to increase the calcium (Ca) and phosphate (PO4) ion release at cariogenic pH. Methods. TTCP was ball-milled … level mass fractions varied from 0% to 75%. Ca and PO4 ion release were measured vs. time at pH of 7.4, 6, and 4. … mechanical properties, tooth caries inhibition, Ca and PO4 ion release …

Binding Energies in Atomic Negative Ions: III

November 14, 2018
Author(s)
T Andersen, H K. Haugen, H Hotop
… splittings and excited state energies of negative ions as well as lifetimes of metastable states are given. … ab initio calculations, atomic negative ions, binding energy, electron affinity, excited states, … Binding Energies in Atomic Negative Ions: III …

Optimal transport and colossal ionic mechano-conductance in graphene crown ethers

July 12, 2019
Author(s)
Subin Sahu, Justin E. Elenewski, Christoph Rohmann, Michael P. Zwolak
… Biological ion channels balance electrostatics and hydration, yielding large ion selectivities alongside high transport rates. These … transport conditions. Crown ethers are known for selective ion adsorption. When embedded in graphene, however, transport … Ion transport, Nanopores, Ion channels, Crown ether …

Loss of 45 Da from a2 Ions and Preferential Loss of 48 Da from a2 Ions Containing Methionine in Peptide Ion Tandem Mass Spectra

January 29, 2011
Author(s)
Yamil Simon, Pedatsur Neta, Xiaoyu Yang, Stephen E. Stein
… which correspond to a neutral loss of 45 Da from a 2 ions. From exact mass analysis this loss is ascribed to … formamide (or NH 3 +CO). Elimination of formamide from a 2 ions requires that the ions cyclize. A mechanism for this … other neutral losses, such as H 2 O. However, if the a 2 ion contains methionine, a neutral loss of 48 Da, ascribed to …

NMR Spectroscopy and Multiscale Modeling Shed Light on Ion-Solvent Interactions and Ion Pairing in Aqueous NaF Solutions

September 10, 2024
Author(s)
Gosia Musial, Demian Riccardi, Chris Suiter, Ethan Sontarp, Samantha Miller, Robert Lirette, Kyle Covington-Rehmeier, Avik Mahata, Chris Muzny, Angela Stelson, Kathleen Schwarz, Jason A. Widegren
… The balance between ion solvation and ion pairing in aqueous solutions modulates chemical and … quantitative determination of the distribution of ion-solvation and ion-pairing states remains elusive. Here, … NMR Spectroscopy and Multiscale Modeling Shed Light on Ion-Solvent Interactions and Ion Pairing in Aqueous NaF …

Ion Storage Group Website

January 1, 1997
Author(s)
Wayne M. Itano, B E. King, John J. Bollinger, D J. Berkeland
… http://tf.nist.gov/ion/index.htm … Ion Storage Group Website …

Detection and identification of sugar alcohol sweeteners by ion mobility spectrometry

June 23, 2016
Author(s)
Thomas Forbes, Edward Sisco, Christopher Browne
… of sugar alcohols sweeteners was demonstrated using ion mobility spectrometry (IMS). IMS provides a valuable … Ion mobility spectrometry, Sugar alcohols, Alternative … Detection and identification of sugar alcohol sweeteners by ion mobility spectrometry …

Experimental Uhrig Dynamical Decoupling Using Trapped Ions

June 25, 2009
Author(s)
Michael J. Biercuk, Hermann Uys, Aaron Vandevender, Nobuyasu Shiga, Wayne M. Itano, John J. Bollinger
… Our qubit system consists of a crystalline array of 9 Be + ions confined in a Penning trap. We use an electron-spin-flip … Experimental Uhrig Dynamical Decoupling Using Trapped Ions …
Displaying 401 - 425 of 2904
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