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Displaying 401 - 425 of 3086

Study of Direct Lithiation of Thin Si Membranes with Spatially-Correlative Low Energy Focused Li Ion Beam and Analytical Electron Microscopy Techniques

November 22, 2016
Author(s)
Vladimir P. Oleshko, Christopher L. Soles, Kevin A. Twedt, J J. McClelland
… Si is an attractive anode material for high-performance Li-ion batteries. The practical use of Si-based anodes is, … these problems. Here, we report on controlled low dose Li+ ion implantation into 9 nm-thick amorphous (a-Si) membranes … (c-Si) membranes using a low-energy focused lithium ion beam. With probe sizes of a few tens of nanometers at …

Measuring the Ion Current in High-Density Plasmas Using Radio-Frequency Current and Voltage Measurements

September 1, 2001
Author(s)
Mark A. Sobolewski
… methods have recently been proposed for monitoring the ion current in situ. These methods rely on passive, … by comparison to direct, independent measurements of the ion current at the substrate electrode made using lower … more accurate numerical sheath model, gives values of the ion current in agreement with the independent measurements. …

A transition-edge sensor-based x-ray spectrometer for the study of highly charged ions at the National Institute of Standards and Technology electron beam ion trap

December 16, 2019
Author(s)
Paul Szypryt, Galen C. O'Neil, Endre Takacs, Joseph N. Tan, Sean W. Buechele, Aung Naing, Douglas A. Bennett, William B. Doriese, Malcolm S. Durkin, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Kelsey M. Morgan, Carl D. Reintsema, Daniel R. Schmidt, Daniel S. Swetz, Joel N. Ullom, Yuri Ralchenko
… Sensor (TES) x-ray spectrometer for the Electron Beam Ion Trap (EBIT) at the National Institute of Standards and … NIST EBIT has produced numerous studies of highly charged ions in diverse fields such as atomic physics, plasma … Institute of Standards and Technology, highly charged ions, atomic physics, plasma spectroscopy, laboratory …

High Precision Measurements of Arsenic Implantation Dose in Silicon by Secondary Ion Mass Spectrometry

February 1, 2001
Author(s)
P Chi, David S. Simons, J M. McKinley, F A. Stevie, C N. Granger
… to be accomplished with low systematic error. Secondary ion mass spectrometry (SIMS) has a demonstrated capability to … investigated include arsenic analytical species, matrix ion species, energy bandpass, and sample holder design. With … profile, energy distribution, high precision measurement, ion implantation, SIMS …

High Quality Oxide Films Deposited at Room Temperature by Ion Beam Sputtering

February 5, 2018
Author(s)
Gerard E. Henein, Juraj Topolancik, Kerry NMN Siebein
… SiO2, Al2O3 and ITO have been deposited via ion beam sputtering at room temperature. The SiO2 films, 100 … Ion beam sputtering, resistivity, breakdown, SiO2, Al2O3, ITO … High Quality Oxide Films Deposited at Room Temperature by Ion Beam Sputtering …

Formation of SEI on Cycled Lithium-Ion Battery Cathodes: Soft X-ray Absorption Study

January 1, 2002
Author(s)
Mahalingam Balasubramanian, H S. Lee, X Sun, Xiao-Qing Yang, A R. Moodenbaugh, James McBreen, Daniel A. Fischer, Ziwen Fu
… (SEI) on LiNi 0.85 Co 0.15 O 2 cathodes from lithium-ion cells cycled at 40EC and 70EC was observed and … battery, electrolyte, lithium-ion, soft x-ray … Formation of SEI on Cycled Lithium-Ion Battery Cathodes: Soft X-ray Absorption Study …

Mobilities: Small Systems

October 12, 2021
Author(s)
J Husband, S R. Leone
… gas. From these studies much has been learned about the ion-neutral interaction potential. Knowledge of how an ion travels through a neutral gas is crucial to the … are essential for accurate modeling of the kinetics of ion-molecule reactions. Such reactions play a major role in …

Hyperfine-mediated electric quadrupole shifts in Al+ and In+ ion clocks

April 6, 2017
Author(s)
Kyle P. Beloy, David R. Leibrandt, Wayne M. Itano
… the averaging schemes that are critical to other optical ion clocks. … aluminum, electric quadrupole moment, indium, ion clock, optical clock, optical frequency standard … electric quadrupole shifts in Al+ and In+ ion clocks …

EUV Spectral Lines of Highly-Charged Hf, Ta and Au Ions Observed with an Electron Beam Ion Trap

January 12, 2011
Author(s)
Ilija Draganic, Yuri Ralchenko, Joseph Reader, John D. Gillaspy, Joseph N. Tan, Joshua M. Pomeroy, Samuel M. Brewer, Dmitry D. Osin
… tantalum, and gold were produced with an electron beam ion trap (EBIT) at the National Institute of Standards and … modeling, line identification, highly-charged ions … EUV Spectral Lines of Highly-Charged Hf, Ta and Au Ions Observed with an Electron Beam Ion Trap …

Effect of a Water Rinse on Labile Fluoride and Ether Ions in Plaque and Saliva Before and After Conventional and Experimental Fluoride Rinses

March 1, 2001
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, Gary E. Schumacher
… apparently due to water induced loss of calcium binding ions. Water- or fluoride-rinse-induced changes in plaque … caries, fluoride, labile ions, plaque, saliva … Effect of a Water Rinse on Labile Fluoride and Ether Ions in Plaque and Saliva Before and After Conventional and …

First principle simulation of ultra-cold ion crystals in a Penning trap with Doppler cooling and a rotating wall potential

July 17, 2019
Author(s)
Chen Tang, Dominic Meiser, John Bollinger, Scott E. Parker
… in a Penning trap with a rotating wall is presented. The ion dynamics is modelled classically. Both axial and planar … non-neutral plasma, Penning trap, rotating wall, trapped-ion crystals … First principle simulation of ultra-cold ion crystals in a Penning trap with Doppler cooling and a …

Direct Imaging of Highly Charged Ions in an Electron Beam Ion Trap

August 1, 2000
Author(s)
James V. Porto, I Kink, John D. Gillaspy
… We have directly observed the ion cloud distribution in an electron beam ion trap using … lines in the ground term of Ar 13+ ,^ Xe 31+ and Xe 32+ ions. Using a gated intensified charge coupled device camera, … provide infromation about the trapped highly charged ions which is difficult to obtain by other methods. To …

New Instruments to Calibrate Atmospheric Transmission

September 17, 2012
Author(s)
Claire E. Cramer, Keith R. Lykke, John T. Woodward IV, Peter Zimmer, John T. McGraw, Daniel C. Zirzow
… Claire E. Cramer , Keith R. Lykke , John T. Woodward IV , Peter Zimmer, John T. McGraw, Daniel C. Zirzow … Ground-based and Airborne Telescopes IV …

Genetically Engineered Metal Ion Binding Sites on the Outside of a Channel's Transmembrane B-Barrel

February 1, 1999
Author(s)
John J. Kasianowicz, D L. Burden, L C. Han, S Cheley, H Bayley
… engineered versions of the Staphlococcus aureus αHL} ion channel to serve as rationally designed sensor components … alpha-hemolysin, alpha-toxin, biosensor, divalent cations, ion channels, protein structure, transition metals … Genetically Engineered Metal Ion Binding Sites on the Outside of a Channel's Transmembrane …
Displaying 401 - 425 of 3086
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