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Displaying 451 - 475 of 4258

Product ion distributions using H3O+ proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS): mechanisms, transmission effects, and instrument-to-instrument variability

February 27, 2025
Author(s)
Michael Link, Megan Claflin, Christina Cecelski, Ayomide Akande, Delany Kilgour, Paul Heine, Matthew Coggon, Chelsea Stockwell, Andrew Jensen, Jie Yu, Han Huyhn, Jenna Ditto, Carnsten Warneke, William Dresser, Keighan Gemmell, Spiro Jorga, Rileigh Robertson, Joost de Gouw, Timothy Bertram, Jonathan Abbatt, Nadine Borduas-Dedekind, Dustin Poppendieck
… mass spectrometry (PTR-MS) using hydronium ion (H3O+) ionization is widely used for the measurement of … H3O+ ionization, as well as the associated chemistry in an ion–molecule reactor, is known to generate product ion distributions (PIDs) that include other product ions …

Diesel Adsorption to PVC and Iron from Contaminated Water Flow and Flushing Tests

June 14, 2016
Author(s)
Mark A. Kedzierski
… of a polyvinyl chloride (PVC) surface and an iron (Fe) surface. A test apparatus designed for the purpose … little or no effect on the accumulation of diesel on an iron surface, which was approximately 0.71 m. The adsorbed diesel on the PVC and iron surfaces was removed by flushing with tap water. Models …

Diesel Adsorption to PVC and Iron During Contaminated Water Flow and Flushing Tests

September 9, 2008
Author(s)
Mark A. Kedzierski
… tests of a polyvinyl chloride (PVC) surface and an iron (Fe) surface.  A test apparatus designed for the purpose … little or no effect on the accumulation of diesel on an iron surface, which was approximately 0.71 mm.  Both the PVC and iron surfaces were readily flushed with tap water.  Models to …

Analysis and Modeling of Individual Heterogeneous Asian Dust Particles Collected at Mauna Loa Observatory

March 11, 2019
Author(s)
Joseph M. Conny, Robert D. Willis, Diana Ortiz-Montalvo
… presence of minor phases in a particle, particularly an iron phase (hematite, magnetite, or iron carbonate) or, in one case soot, affected optical … spatial models of each particle with focused ion beam (FIB) SEM and FIB tomography. From the spatial … mineral dust, scanning electron microscopy, focused ion-beam tomography, FIB-SEM, discrete dipole approximation, …

Combining Microscopic and Macroscopic Probes to Untangle the Single-Ion Anisotropy and Exchange Energies in an S = 1 Quantum Antiferromagnet

April 20, 2017
Author(s)
Jamie Brambleby, Jamie Lee Manson, Paul A. Goddard, Matthew B. Stone, Roger D. Johnson, Pascal Manuel, Jacquelina A. Villa, Craig Brown, Helen Lu, Shalinee Chikara, Vivien Zapf, Saul H. Lapidus, Rebecca Scatena, Piero Macchi, Yu-Sheng Chen, Lai-Chin Wu, John Singleton
… (υ 0 less than or equal to}10 T) allow the single-ion anisotropy energy D and the Heisenberg J and J' … total spin population of ca. 1.75e residing on the Ni(II) ion while remaining 0.25e is delocalized over both ligand … Microscopic and Macroscopic Probes to Untangle the Single-Ion Anisotropy and Exchange Energies in an S = 1 Quantum …

Magnetic Correlations of Iron Oxide Nanoparticles as Probed by Polarized SANS in Stretched Magnetic Nanoparticle-Elastomer Composites

January 31, 2022
Author(s)
Samuel Oberdick, Kathryn L. Krycka, Julie Borchers
… We have investigated the magnetic correlations among 7 nm iron oxide nanoparticles embedded in stretched silicone … and macroscopic deformations cause rearrangement of the iron oxide particles on the nanoscale. Polarized neutrons can … a stretching transformation on FCC-like crystallites of iron oxide nanoparticles embedded in an elastomeric medium. …

Photoexcitation of Free Radicals and Molecular Ions Trapped in Rare-Gas Solids.

May 2, 2011
Author(s)
Marilyn E. Jacox
… The photochemical production of free radicals, molecular ions, and other highly reactive species, their trapping in … Spectrum, Free Radicals, Infrared Spectrum, Molecular Ions, Photoexcitation, Rare-Gas Matrices … Photoexcitation of Free Radicals and Molecular Ions Trapped in Rare-Gas Solids. …

Role of Ion-Beam Processing Time in the Formation and Growth of the High-Nitrogen Phase in Austenitic Stainless Steel

November 1, 2000
Author(s)
D L. Williamson, P J. Wilber, F R. Fickett, S Parascandola
… been prepared as a function of exposure time to a nitrogen ion beam Times from 15 to 4 h were selected with other … below the γ N and was found to be introduced during the Ar-ion sputter-cleaning/heating step used prior to exposure to the N-ion beam. This C-rich layer is punished ahead of the incoming …

Wavelength Standards in the Ultraviolet

September 1, 2002
Author(s)
Gillian Nave, Craig J. Sansonetti
… accurate wavelength measurements for lines of Pt 1 and II, Fe I, Ge I, and Kr II in the region 1800 to 3100 . New microlithography tools … We also made accurate new measurements for Pt I and II and Kr II in the region 1800 to 3100 . … spectroscopy, Fourier transform spectroscopy, germanium, iron, platinum, ultraviolet, wavelength standards …

Structure Analysis of the 6H - Ba[Ti,Fe 3+ ,Fe 4+ ]O 3 -d^ Solid Solution

February 1, 1998
Author(s)
I E. Grey, C Li, L M. Cranswick, Robert S. Roth, Terrell A. Vanderah
… of BaTiO 3 forms an extensive solid solution with barium iron oxide, having the general formula BaTi 1-X-y Fe 3+ x Fe … and gas atmosphere. Solid solution members having iron predominantly as Fe 3+ or as Fe 4+ were prepared by … relative to other polymorphs. Further incorporation of iron into the 6H structure at high temperature occurs by …

High-precision measurements of n = 2 - n = 1 transition energies and level widths in He- and Be- like Argon Ions

March 26, 2018
Author(s)
Jorge Machado, Csilla Szabo-Foster, Jose Paulo Santos, Pedro Amaro, Mauro Guerra, Guojie Bian, Jean-Michel Isac, Paul Indelicato
… and of the 1s2s22p 1P1 → 1s22s2 1S0 line in Be-like argon ions. The highly-charged ions were produced in the plasma of an Electron-Cyclotron … Highly charged ions, He-like argon, Be-like argon, level widths, transition … energies and level widths in He- and Be- like Argon Ions …

Measuring the difference in nuclear charge radius of Xe isotopes by EUV spectroscopy of highly charged Na-like ions

November 5, 2018
Author(s)
Roshani Silwal, A. Lapierre, John D. Gillaspy, Joan M. Dreiling, S A. Blundell, Dipti Goyal, A. Borovik, Jr., G Gwinner, A.C.C. Villari, Yuri Ralchenko, Endre Takacs
… extreme ultraviolet spectroscopy of highly charged Na-like ions. The isotope shift of the Na-like D1 (3s 2S1/2 − 3p … EUV spectroscopy, Na-like ions, highly charged ions, EBIT, nuclear radius Category, atomic physics, atomic … Xe isotopes by EUV spectroscopy of highly charged Na-like ions …

Dynamic Partitioning of Neutral Polymers into a Single Ion Channel

June 1, 1999
Author(s)
S. M. Bezrukov, John J. Kasianowicz
… using single nanometer-scale pores formed by protein ion channels. The ionic conductance of a channel depends on … glycol) into two structurally and chemically different ion channels (staphylococcus aureus α-hemolysin and … alamethecin, alpha-hemolysin, diffusion, ion channel, noise analysis, partition coefficient, PEG, …

Activity measurements of the radionuclides 18F and 64Cu for the NIST, USA in the ongoing comparisons BIPM.RI(II)-K4.F-18 and BIPM.RI(II)-K4.Cu-64

January 1, 2018
Author(s)
Denis E. Bergeron, Jeffrey T. Cessna, Ryan P. Fitzgerald, Leticia S. Pibida, Brian E. Zimmerman, Carine Michotte, Manuel Nonis, Andrew Fenwick, Kelly Ferreira, John Keightley
… measurements. The comparisons, identifiers BIPM.RI(II)-K4.F-18 and BIPM.RI(II)-K4.Cu-64, are linked to the corresponding BIPM.RI(II)-K1.F-18 and BIPM.RI(II)-K1.Cu-64 comparisons and degrees … 64Cu for the NIST, USA in the ongoing comparisons BIPM.RI(II)-K4.F-18 and BIPM.RI(II)-K4.Cu-64 …

Calibration of a Stopping Power Model for Silicon Based on Analysis of Neutron Depth Profiling and Secondary Ion Mass Spectrometry Measurements

June 1, 2002
Author(s)
Kevin J. Coakley, Huaiyu H. Chen-Mayer, George P. Lamaze, David S. Simons, P E. Thompson
… a silicon sample with four delta-doped planes by secondary ion mass spectrometry. In a neutron depth profiling (NDP) … model calibration, neutron depth profiling, secondary ion mass spectrometry, silicon, stopping power, transport of … Based on Analysis of Neutron Depth Profiling and Secondary Ion Mass Spectrometry Measurements …

Hydrogen Storage and Carbon Dioxide Capture in an Iron-Based Sodalite-Type Metal-Organic Framework (Fe-BTT) Discovered via High-Throughput Methods

August 1, 2010
Author(s)
Kenji Sumida, Satoshi Horike, Steven S. Kaye, Zoey R. Herm, Wendy Queen, Craig Brown, Fernande Grandjean, Gary J. Long, Anne Dailly, Jeffrey R. Long
… metal-organic framework, hydrogen, adsorption, iron, microporsous, iron … Hydrogen Storage and Carbon Dioxide Capture in an Iron-Based Sodalite-Type Metal-Organic Framework (Fe-BTT) …

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. …

Voltage Modulated Magnetic Anisotropy of Rare Earth Iron Garnet Thin Films on a Piezoelectric Substrate

December 19, 2022
Author(s)
Miela Gross, Walid Al Misba, Kensuke Hayashi, Dhritiman Bhattacharya, Daniel Gopman, Jayasimha Atulasimha, Caroline Ross
… is dempnstrated in ferrimagnetic insulating rare earth iron garnets on a piezoelectric substrate, (011)-oriented PMN-PT. A yttrium-substituted dysprosium iron garnet (YDyIG) film 42 nm thick is grown via pulsed … Voltage Modulated Magnetic Anisotropy of Rare Earth Iron Garnet Thin Films on a Piezoelectric Substrate …
Displaying 451 - 475 of 4258
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