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Displaying 1026 - 1050 of 3757

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 …

Study of hydrogen diffusion in superprotonic ionic conductors, MHXO4, by m+SR and QENS

February 21, 2009
Author(s)
Yutaka Ikedo, Hiroshi Nozaki, Masashi Harada, Jun Sugiyama, Taku J. Sato, Yasumitsu Matsuo, Kusuo Nishiyama, James S. Lord, Yiming Qiu, John R. Copley
… implies a relationship between the presence of the atomic hydrogen (Mu) state and high σH+ in Phase I of CHS. According … Study of hydrogen diffusion in superprotonic ionic conductors, MHXO4, …

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 …

Chlorine - Bromine Combination Isotope Intensities

June 9, 2015
Author(s)
Thomas J. Bruno
… table provides peak intensities (relative to the molecular ion (M+) at an intensity normalized to 100 percent) for … the absence of all other elements except carbon and hydrogen.1-4 The mass abundance calculations were based upon …

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 …

Unexpected Gas-Phase Nitrogen-Oxygen Smiles Rearrangement: CID of Deprotonated 2-(N-Methylanilino)ethanol and Morpholinylbenzoic Acid Derivatives

October 21, 2022
Author(s)
Yuxue Liang, Yamil Simon, Pedatsur Neta, Stephen E. Stein
… a five-membered ring rearrangement to form a phenoxide ion C6H5O-. When R = H, such a Smiles rearrangement is … an anilide anion (C6H5NH-, m/z 92) rather than a phenoxide ion (C6H5O-, m/z 93.0343). However, when the amino hydrogen of 2-anilinoethanol is substituted by a methyl …

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 1026 - 1050 of 3757
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