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Displaying 1126 - 1150 of 2538

Sheath Model for Radio-Frequency-Biased, High-Density Plasmas, Valid for all O/O Iota

December 1, 2000
Author(s)
Mark A. Sobolewski
… (rf) bias applied at frequencies ω comparable to ω i , the ion plasma frequency at the edge of the sheath. The model treats ion dynamics using fluid equations, including all … than that obtained by models that neglect time-dependent ion dynamics. In particular, differences of as much as 40-50% …

Nitration of alkyl substituted 4-aryl(benzoyl)pyridynes

May 1, 1982
Author(s)
Anzor I. Mikaia, Nikolay A. Prostakov, Anatolyi Soldatenkov, AP Krapivko, AA Fomichev, AA Ustenko
… Peri-effect leading to a base peak of [M-NO2] ion in the spectra of dinitro diarenes is described along …

Chapter: Structure and phase behavior of polyampholytes and polyzwitterions

March 4, 2022
Author(s)
Phillip Pickett, Yuanchi Ma, Vivek Prabhu, Michael Lueckheide, Nicholas Posey
… the entire polymer structure. These special classes of ion-containing polymers have many applications enabled by … the unique solution-responsive behaviors of these ion-containing polymers and how their chemistry is used to …

Round-Robin Study of Implants in Si and SiO 2 by SIMS, RBS, and NAA

December 31, 1990
Author(s)
Peter Roitman, David S. Simons, P Chi, Richard M. Lindstrom, G. E. Lux, S. Baumann, S. W. Novak, R. G. Wilson, D. Farrington, J. Keenan, F. A. Stevie, J. L. Moore, R. B. Irwin, A. J. Filo, C. W. Magee, R. Alcorn, D. File
… Proc., Seventh International Conference on Secondary Ion Mass Spectrometry (SIMS VII) …

Polyelectrolyte association and solvation

July 10, 2018
Author(s)
Alexandros Chremos, Jack F. Douglas
There has been significant interest in the tendency of highly charged particles having the same charge to form dynamic clusters in solution, but an accepted theoretical framework that can account for this ubiquitous phenomenon has been slow to develop. The

Temperature dependent 29Si incorporation during deposition of highly enriched 28Si films

November 16, 2017
Author(s)
Kevin J. Dwyer, Hyun S. Kim, David S. Simons, Joshua M. Pomeroy
… into highly enriched 28Si films deposited by hyperthermal ion beams at elevated temperatures in the dilute presence of … in situ beyond 99.99998 % 28Si onto Si(100) using an ion beam deposition system and seek to systematically vary … measure the impact on quantum coherence. We use secondary ion mass spectrometry to measure the residual 29Si isotope …

Interpretation of Effects at the Static Fatigue Limit of Soda-Lime-Silicate Glass

December 1, 2005
Author(s)
Theo Fett, J -. Guin, Sheldon M. Wiederhorn
… layer is built up on the crack surface as a consequence of ion exchange at the crack tip. This model extends the one presented earlier by Bunker and Michalske. Ion exchange between hydronium (H3O+) in the solution and … by the basic solutions that form as a consequence of ion exchange; for the fact that crack tip bifurcation is …

2,5-Dihydroxybenzoic Acid: Laser Desorption/Ionisation as a Function of Elevated Temperature

March 1, 2005
Author(s)
William E. Wallace, Mark Arnould, R Knochenmuss
… dependence of laser desorption/ionization (LDI) ion yields has been measured for 2,5-dihydroxybenzoic acid … C using time-of-flight mass spectrometry. A steep rise in ion production occurs at 90 C, achieving a maximum between … of the sample into the vacuum. The overall trend in ion production is well described by a comprehensive two-step …

Comprehensive Inelastic Neutron Scattering Study of the Multiferroic Mn 1-x Co x WO 4

December 14, 2018
Author(s)
Jinchen Wang, R. S. Fishman, Yiming Qiu, J. A. Fernandez-Baca, Georg Ehlers, K.-C. Liang, Yaqi Wang, Bernd Lorenz, C. W. Chu, Feng Ye
… (J i up to 12th nearest-neighbors) and the single-ion anisotropy K induced by the spin-orbit interaction. While … the dominant effect of doping is to change the single-ion anisotropy from easy axis (K> 0) in the collinear AF1 …

A Schrodinger Cat" Superposition State of an Atom

January 1, 1996
Author(s)
C Monroe, D M. Meekhof, B E. King, David J. Wineland
… was generated at the single atom level. A trapped 9Be+ ion was laser-cooled to the zero-point energy and then … (electronic) and external (motional) states of the ion. The Schrödinger cat superposition was verified by …

Measurement of the Surface Density of States by Field Ionization

October 1, 1975
Author(s)
David R. Penn
… It is shown that recent measurements of field ion energy distributions from clean tungsten surfaces probe … We find j() = (2/kh)m| d3rm(r) z|2(-m), where j() is the ion current a , mand m are electronic metal eigenfunctions …
Displaying 1126 - 1150 of 2538
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