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 601 - 625 of 2538

Microscopic Insights into Ion Gel Dynamics using Neutron Spectroscopy

August 1, 2012
Author(s)
Maiko Kofu, Takenori Someya, Soichi Tatsumi, Kazuhide Ueno, Takeshi Ueki, Masayoshi Watanabe, Takuro Matsunaga, Mitsuhiro Shibayama, Victoria Garcia Sakai, Madhu Sudan Tyagi, Osamu Yamamuro
… We have investigated the microscopic dynamics of ion gels consisting of a PMMA [poly(methyl methacrylate)] … by means of quasi-elastic neutron scattering (QENS). These ion gels interestingly exhibit two glass transitions (T g S) … Microscopic Insights into Ion Gel Dynamics using Neutron Spectroscopy …

Monte Carlo / RRKM / Classical Trajectories Modeling of Collisional Excitation and Dissociation of n-Butylbenzene Ion in Multipole Collision Cells of Tandem Mass Spectrometers

May 18, 2010
Author(s)
Vadim D. Knyazev, Stephen Stein
… C 7 H 8 + ) ions in the electromagnetic field of multipole ion guides and collision cells, classical trajectory modeling … and scattering of ions, and RRKM modeling of the parent ion decomposition. Experimental information on the energy … Collisional Excitation and Dissociation of n-Butylbenzene Ion in Multipole Collision Cells of Tandem Mass Spectrometers …

Origin of Electrical Signals for Plasma Etching Endpoint Detection

November 18, 2011
Author(s)
Mark A. Sobolewski
… in substrate surface properties such as photoemitted or ion-induced electron yield. To investigate these effects, … in rf bias impedance coincides with an increase in ion current density and a change in the electron energy … distribution function (EEDF). The measured changes in ion current and EEDF, when input into a numerical model of …

Improving the efficiency of Monte Carlo simulations of ions using expanded grand canonical ensembles

October 9, 2019
Author(s)
Harold W. Hatch, Steven W. Hall, Jeffery R. Errington, Vincent K. Shen
… apparent requirement to insert and delete neutral sets of ions simultaneously in order to maintain charge neutrality. … by gradual insertion and deletion of these neutral sets of ions. We introduce an expanded ensemble approach which may be … existing methods to further improve efficiency. Individual ions are inserted or deleted in one Monte Carlo trial rather …

Spectral Data for Atoms and Ions

November 1, 2000
Author(s)
Joseph Reader
… of databases for spectral properties of atoms and ions. Version 2.0 of the NIST Atomic Spectra Database (ASD) … Spectral Data for Atoms and Ions …

MULTI-COLLECTOR CONFIGURATION CONSIDERATIONS AND SUBSTRATE RELATIVE SENSITIVITY FACTOR EFFECTS FOR AGE-DATING MEASUREMENTS OF PARTICLES BY LARGE GEOMETRY SECONDARY ION MASS SPECTROMETRY

October 1, 2021
Author(s)
Todd Williamson, David S. Simons, John D. Fassett
… particles using large geometry secondary ion mass spectrometry (LG-SIMS) showing that it is feasible … Large Geometry Secondary Ion Mass Spectrometry, Age Dating Analysis, Multi-collector … MEASUREMENTS OF PARTICLES BY LARGE GEOMETRY SECONDARY ION MASS SPECTROMETRY …

(Magic Dopant) Amphoteric Behavior of a Redox-Active Transition Metal Ion in a Perovskite Lattice: New Insights on the Lattice Site Occupation of Manganese in SrTiO3

October 5, 2016
Author(s)
Russell A. Maier, Matthew P. Donohue
… for the first time that a transition metal, redox-active ion can exhibit amphoteric substitution in the SrTiO3 … amphoteric doping of a transition metal redox- active ion offers the possibility to build new electronic … Amphoteric Behavior of a Redox-Active Transition Metal Ion in a Perovskite Lattice: New Insights on the Lattice Site …

Determination of Inorganic Ions in Mineral Water by Gradient Elution Moving Boundary Electrophoresis

October 1, 2010
Author(s)
Paul M. Flanigan IV, David J. Ross, Jonathan G. Shackman
… was developed for the determination of the major inorganic ions in commercial mineral waters using gradient elution … μmol/L to sub-μmol/L range. Calculated values of the major ions in three commercial mineral waters were compared to … Determination of Inorganic Ions in Mineral Water by Gradient Elution Moving Boundary …

Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies

June 7, 2022
Author(s)
Elisa Guallart, Noelia Fajar, Maribel Garcia-Ibanez, Monica Castano-Carrera, Rocio Santiago-Domenech, Abed El Rahman Hassoun, Fiz Perez, Regina Easley, Marta Alvarez
… The spectrophotometric methodology for carbonate ion determination in seawater was first published in 2008 and … uses a merged overdetermined CO2 system dataset (carbonate ion, pH and alkalinity) obtained between 2009 to 2020 to … Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies …

"Perpendicular laser cooling with a rotating wall potential in a Penning trap"

April 26, 2016
Author(s)
Joseph W. Britton, Justin G. Bohnet, John Bollinger, Steven B. Torrisi
… wall potential on perpendicular laser cooling in a Penning ion trap. By including energy exchange with the rotating … laser cooling, laser cooling, non-neutral plasmas, Penning ion trap, rotating wall, trapped ion crystals …
Displaying 601 - 625 of 2538
Was this page helpful?