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Search Publications

NIST Authors in Bold

Displaying 651 - 675 of 4258

Impact of Ni-like metastable states and hyperfine quenching on charge state distribution in an EBIT

June 30, 2025
Author(s)
Chowdhury Abrar Faiyaz, Endre Takacs, Timothy Burke, FNU Dipti, Galen O'Neil, Adam Hosier, Hunter Staiger, Joseph Tan, Yuri Ralchenko
… and spectral features of ions in electron beam ion trap (EBIT) devices. Ladder ionization with intermediate … Nd ions, we show that these processes significantly alter ion populations and spectra, emphasizing the importance of … Plasma diagnostics - charged-particle spectroscopy, Ion sources (positive ions, negative ions, electron cyclotron …

Detecting ion pairing in sodium halide solutions with dielectric spectroscopy

July 1, 2025
Author(s)
Michael Woodcox, Sarah Evans, Rebecca Bone, Spencer Mattes, Avik Mahata, Aaron Hagerstrom, Chris Muzny, Ravishankar Sundararaman, Kathleen Schwarz, Angela Stelson
… in the dielectric spectra, the contributions of the ion-ion and ion-water interactions can be difficult to measure and … Detecting ion pairing in sodium halide solutions with dielectric …

Using Laser-Cooled Atoms as a Focused Ion Beam Source

December 1, 2006
Author(s)
James L. Hanssen, E Dakin, Jabez J. McClelland, M Jacka
… describe a new method for creating a high quality focused ion beam using laser-cooled neutral atoms in a magneto-optical trap as an ion source. They show that this new technique can provide … that are better than the state of the art in focused ion beams. The source can be used with a range of different …

Enhancing molecular flux through nanopores via attractive interactions

November 1, 2006
Author(s)
John J. Kasianowicz, Tam Nguyen, Vincent M. Stanford
… has a low dielectric constant (' ~ 2), it was shown that ion-selective transporters, now known as protein ion channels, are water-filled pores (5). The ability to … the means to probe the structure-function relationship of ion channels. Channels, and channel-like entities also …

Position Dependence in the CDMS II Zip Detectors

January 1, 2002
Author(s)
V. Madic, W. Rau, D. S. Akerib, P L. Brink, B. Cabrera, J. P. Castle, C S. Chang, M. B. Crisler, D Driscoll, J Emes, R. J. Gaitskell, J. Hellmig, M E. Huber, J M. Martinis, P. Meunier, T. A. Perera, M C. Perillo Isaac, T. Saab, B. Sadoulet, R. W. Schnee, D N. Seltz, G Z. Wang, B C. Young
… of measurements made on a Si detector from the first CDMS II production batch. We also investigate ways of using the … Position Dependence in the CDMS II Zip Detectors …

Imaging of Magnetic Excitations in Nanostructures with Microwave Near-Field Microscopy

November 25, 2021
Author(s)
Samuel Berweger, Robert Tyrrell-Ead, Houchen Chang, Mingzhong Wu, Hong Tang, Hans Nembach, Karl Stupic, Stephen E. Russek, Thomas Mitchell (Mitch) Wallis, Pavel Kabos
… images of spin-wave excitations in a patterned yttrium iron garnet (YIG) thin film obtained by use of near-field … Yttrium iron garnet (YIG), Spin-waves, Microwave Near-field microscopy …

A NIST facility for Resonant Soft X-ray Scattering measuring nano-scale soft matter structure at NSLS-II

January 26, 2021
Author(s)
Eliot Gann, Glenn Holland, Regis Kline, Peter Beaucage, Dean DeLongchamp, Daniel Fischer, Brian Collins, Terry McAfee, Christopher McNeill, Thomas Crofts
… Technology (NIST) at the National Synchrotron Light Source-II (NSLS-II). The RSoXS station is located within the Spectroscopy Soft and Tender (SST) beamline suite at NSLS-II located in Brookhaven National Laboratory, New York. … measuring nano-scale soft matter structure at NSLS-II …

The Cu II Spectrum

February 24, 2017
Author(s)
Alexander Kramida, Gillian Nave, Joseph Reader
… description of the spectrum of singly ionized copper (Cu II). In the VUV region, we measured 401 lines using a concave … The Cu II Spectrum …

Coupled quantized mechanical oscillators

March 10, 2011
Author(s)
Kenton R. Brown, Christian Ospelkaus, Yves Colombe, Andrew C. Wilson, Dietrich G. Leibfried, David J. Wineland
… between two motional modes of an individual trapped ion has been achieved by coupling through optical fields [6], … into hybrid quantum systems, such as coupling a trapped ion to a quantized macroscopic mechanical or electrical … interaction, coupled oscillators, harmonic oscillator, ion trap, mechanical oscillator, quantum oscillator, trapped …

Non-solvating, side-chain polymer electrolytes as lithium single-ion conductors: synthesis and ion transport characterization

October 3, 2019
Author(s)
Jiacheng Liu, Phillip D. Pickett, Bumjun Park, Sunil Upadhyay, Sara Orski, Jennifer Schaefer
… Solid-state single-ion conducting polyelectrolytes have drawn considerable … interest for secondary lithium batteries due to their high ion conductivities under solvent-free conditions. … materials; however, their potential is limited due to the ion transport mechanism being coupled to segmental …

Alterations in Water Structure Induced by Guanidinium and Sodium Ions

November 1, 2004
Author(s)
Raymond D. Mountain, D Thirumalai
… as the concentration of ion is varied. We consider two ions, namely, sodium chloride and guanadinium chloride. As the concentration of sodium ions, Na^+, is increased the water structure is greatly … The differences in the interaction of these two ions with water as their concentration is varied are used to …

Measurement of Ion-Pairing Interactions in Buffer Solutions with Microwave Microfluidics

January 1, 2019
Author(s)
Charles A. Little, Angela C. Stelson, Nathan D. Orloff, Christian J. Long, James C. Booth
… physical properties including interfacial polarization, ion mobility, and hydration. Many biologically and chemically … show that the presence of ions in solution produces a weak ion-pairing signal. We used microfluidics integrated with … solutions between 100 kHz – 67 GHz. To characterize the ion-pairing signal, we fit the calibrated data with two …

Automated Analysis of Organic Particles Using Cluster SIMS

June 1, 2004
Author(s)
John G. Gillen, Cynthia J. Zeissler, Christine M. Mahoney, Abigail P. Lindstrom, Robert A. Fletcher, P Chi, Jennifer R. Verkouteren, David S. Bright, R Lareau, M Boldman
… Cluster primary ion bombardment combined with secondary ion imaging is used in an ion microscope secondary ion mass spectrometer for the … SIMS, explosives, inkjet, particle searching, polyatomic ion …

Application of Microcalorimeter Energy Measurement to Biopolymer Mass Spectrometry

March 1, 2001
Author(s)
B. Neuhauser, Gene C. Hilton, John M. Martinis
… microcalorimeter detector. We emphasize the measurement of ion-impact energy as a way to obtain extra information that … measurements are used to discriminate against erroneous ion-strikes, to resolve ambiguities that connot be resolved … ion energy, microcalorimeter, mixture analysis …

Quantitative Depth Profiling of an Alternating Pt/Co Multilayer and a Pt Co Alloy multilayer by SIMS using a Buckminsterfullerene (C60) Source

May 15, 2007
Author(s)
K.J. Kim, David S. Simons, J Greg Gillen
… Buckmins erfullerene ion beam has been applied o he dep h profiling of an al erna … Quan i a ive dep h profiling was performed by secondary ion mass spec rome ry (SIMS) wi h C60 ions using P Co alloy … were used o conver an original dep h profile o a composi ion dep h profile. A severe in erface ar ifac observed in he …

Enhanced Model for Scanning Tunneling Microscope Tip Geometry Measured with Field Ion Microscopy

March 10, 2004
Author(s)
P V. Rao, Carsten P. Jensen, Richard M. Silver
… as conical, spherical, or parabolic. By using a field ion microscope (FIM), the tip shape and size can be measured … characterize SPM tips, detailed shape of the tip, field ion microscopy (FIM), scanning probe microscope, tip character … Tunneling Microscope Tip Geometry Measured with Field Ion Microscopy …

Decoherence-Free Quantum Memory Using Trapped Ions

January 1, 2001
Author(s)
D Kielpinski, V Meyer, M A. Rowe, C A. Sackett, Wayne M. Itano, C Monroe, David J. Wineland
… decoherence-free subspace (DFS) of a pair of trapped 9Be+ ions, we protect the qubit from environment-induced dephasing … arbitrary qubit stored in a single ion to the DFS of two ions. … Decoherence-Free Quantum Memory Using Trapped Ions …
Displaying 651 - 675 of 4258
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