U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 426 - 450 of 3311

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 …

The Spectrum and Term Analysis of Co III Measured using Fourier Transform and Grating Spectroscopy

March 30, 2010
Author(s)
D. G. Smillie, J C. Pickering, Gillian Nave, P. L. Smith
… The spectrum of Co III has been recorded in the region 1562 Å to 2564 Å 64000 … Penning discharge lamp. Classified lines include: 513 Co III lines measured using FT spectroscopy, the strongest … The Spectrum and Term Analysis of Co III Measured using Fourier Transform and Grating Spectroscopy …

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 …

Spectral Data for Gallium: Ga I through Ga XXXI

October 12, 2021
Author(s)
T Shirai, Joseph Reader, Alexander Kramida, J Sugar
… and line wavelengths are compiled. For Ga I, Ga II, and Ga III we include radiative probabilities of electric-dipole … term and a value of ionization energy is included for each ion. …

Comprehensive Capacitance-Voltage Simulation and Extraction Tool Including Quantum Effects for High-k on SixGe1􀀀x and InxGa1􀀀xAs: Part I - Model Description and Validation

July 21, 2017
Author(s)
Sarkar Anwar, William Vandenberghe, Gennadi Bersuker, Dmitry Veksler, Giovanni Verzellesi, Creighton Buie, Eric Vogel, Christopher Hinkle
… and Ge. A more complex Cit model is also implemented for III-Vs that accurately captures frequency dispersion in … C-V Simulation, Quantum mechanical effects, Dit extraction, III-V semiconductors, thin oxides …

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 …

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 …

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 …

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 …

The New Ultraviolet Spectral Responsivity Scale Based on Cryogenic Radiometry at Synchrotron Ultraviolet Radiation Facility III

May 1, 2001
Author(s)
Ping-Shine Shaw, Thomas C. Larason, R Gupta, Steven W. Brown, Robert E. Vest, Keith R. Lykke
… of the Synchrotron Ultraviolet Radiation Facility (SURF III) at the National Institute of Standards and Technology … the infrared to the soft x-ray. The beamline 4 at SURF III is a cryogenic-radiometer based radiometric facility for … deep ultraviolet (DUV) spectral range. The upgrade of SURF III has allowed us to use beamline 4 to improve the detector …

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 …

Measurements of 25 Mg + and 27 Al + magnetic constants for improved ion clock accuracy

July 15, 2019
Author(s)
Samuel M. Brewer, Jwo-Sy Chen, Aaron M. Hankin, Ethan Clements, Chin-wen Chou, Kyle Beloy, Will McGrew, Xiaogang Zhang, Robert J. Fasano, Daniele Nicolodi, Holly Leopardi, Tara Fortier, Scott Diddams, Andrew Ludlow, David J. Wineland, David Leibrandt, David Hume
… 358(60) X 10-5 and the nuclear g-factor for the free 25Mg+ ion gI' = 1.861 957 83(28) X 10-4. … of 25 Mg + and 27 Al + magnetic constants for improved ion clock accuracy …

Formation of Solid Electrolyte Interface on Cycled Lithium-Ion Battery Cathodes: Soft X-ray Absorption Study

May 3, 2002
Author(s)
Mahalingam Balasubramanian, James McBreen, Xiao-Qing Yang, H S. Lee, A R. Moodenbaugh, Daniel A. Fischer, Ziwen Fu, D Abraham
… Lithium-ion batteries are promising candidates for hybrid electric … to study the nature of the SEI layers in lithium-ion battery cathodes. … cathode, hybrid electric vehicles (HEV), lithium-ion batteries, solik electrolyte intervace (SEI) … Formation of Solid Electrolyte Interface on Cycled Lithium-Ion Battery Cathodes: Soft X-ray Absorption Study …

Achieving 0.2 % Relative Expanded Uncertainty in Ion Chromatography Analysis using a High-Performance Methodology

April 12, 2011
Author(s)
Ryan G. Brennan, Therese A. Butler, Michael R. Winchester
… spectrometry (ICP-OES) has been successfully translated to ion chromatography (IC) to enable analyses with extremely low … high-performance (HP), ion chromatography (IC), low uncertainty, anion SRM … Achieving 0.2 % Relative Expanded Uncertainty in Ion Chromatography Analysis using a High-Performance …

Automated SIMS for Determining Isotopic Distributions in Particle Polutations

February 1, 1998
Author(s)
David S. Simons, John G. Gillen, Cynthia J. Zeissler, R H. Fleming, P J. McNitt
… throughput is achieved by using a commercial secondary ion microscope to collect direct ion images simultaneously from multiple particles within the … image pairs are recorded by spatially resolved single ion counting with a resistive anode encoder (RAE) image …

Separation of Inner Shell Vacancy Transfer Mechanisms in Collisions of Slow Ar 17+ Ions with SiO 2

January 1, 2001
Author(s)
E Takacs, Z Ber nyi, John D. Gillaspy, L P. Ratliff, Ronaldo Minniti, J Pedulla, R Deslattes, N Stolterfoht
… the spectrum of x-rays emitted when hydrogen-like argon ions impact silicon dioxide surfaces. Specifically, we were … highly charged ions, surface interactions, vacancy transfer, x-ray … Vacancy Transfer Mechanisms in Collisions of Slow Ar 17+ Ions with SiO 2 …
Displaying 426 - 450 of 3311
Was this page helpful?