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NIST Authors in Bold

Displaying 1251 - 1275 of 4634

Exfoliated transition metal dichalcogenide (TMD) nanosheets for supercapacitor and sodium ion battery applications

August 14, 2019
Author(s)
Jonathan Turley, Santanu Mukherjee, Elisabeth Mansfield, Jason Holm, Lamuel David, Gurpreet Singh
… regarding the safety, flammability and hazards posed by Li-ion systems has led to the research of alternative rechargeable metal-ion electrochemical storage technologies. Among the most notable of these are the Na-ion supercapacitors and batteries, motivated in part because …

Development of a new UHV/XHV pressure standard (Cold Atom Vacuum Standard)

November 10, 2017
Author(s)
Julia Scherschligt, James A. Fedchak, Daniel Barker, Stephen Eckel, Nikolai Klimov, Constantinos Makrides, Eite Tiesinga
… atoms (such as the alkali-metal lithium) from a magnetic trap due to collisions with the background gas (primarily H2) … standards, ultra-cold atoms, atom trapping, magnetic trap …

Quantum Dense Coding with Atomic Qubits

January 1, 2004
Author(s)
T Schaetz, Murray D. Barrett, Dietrich G. Leibfried, J Chiaverini, Joseph W. Britton, Wayne M. Itano, John D. Jost, Christopher Langer, David J. Wineland
We report the implementation of quantum dense coding on individual atomic qubits with the use of two trapped 9Be+ ions. The protocol is implemented with a complete Bell measurement that distinguishes the four operations used to encode two bits of classical

Overview of Recent Atomic Spectroscopy At The NIST EBIT

May 5, 2012
Author(s)
John Gillaspy
Seven papers published by the NIST EBIT spectroscopy team and collaborators from mid-2009 to mid-2011 are summarized. Previous discussions of the D-lines in Na-like ions and the Lyman-alpha lines in H-like ions are updated with new information. Nine issues

Classical Trajectories and RRKM Modeling of Collisional Excitation and Dissociation of Benzylammonium and tert Butyl Benzylammonium Ions in a Quadrupole-Hexapole-Quadrupole Tandem Mass Spectrometer

March 1, 2010
Author(s)
Vadim D. Knyazev, Stephen Stein
… of the benzylammonium and the 4-tert butyl benzylammonium ions was studied experimentally in an electrospray ionization … were determined as functions of the kinetic energy of ions and the collider gas (argon) pressure. A theoretical … of the trajectories of the parent and the product ions flight through the hexapole collision cell, …

3D Molecular Imaging SIMS

July 1, 2006
Author(s)
John G. Gillen, Albert J. Fahey, M Wagner, Christine M. Mahoney
… analyzed by dynamic SIMS using SF 5 + polyatomic primary ion bombardment. Each of these systems exhibited minimal … through the depth of the film. By combing secondary ion imaging with depth profiling, 3-dimensional molecular … sections are cut in the samples with the SF5+ primary ion beam to produce a laterally magnified cross section of …

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 …

Generalized Pseudo-Potentials for Higher Partial Wave Scattering

October 12, 2021
Author(s)
R Stock, A Silberfarb, I H. Deutsch, E L. Bolda
… apply this to study two particles in an isotropic harmonic trap interacting through a central potential and derive … Fermi Pseudopotential, harmonic atom trap, partial wave, spectrum …

Computational study of the dielectric properties of [La,Sc] 2 O 3 solid solutions

July 11, 2010
Author(s)
Hiroyoshi Momida, Eric J. Cockayne, Naoto Umezawa, Takahisa Ohno
… predicted at small Sc concentrations due to the rattling ion effect. Similar calculations for a model amorphous La2O3 … the Sc changes in a way that compensates for the rattling ion effect. … gate dielectrics, high-k dielectrics, rattling ion effect …

Amorphous Calcium Phosphate/Urethane Methacrylate Resin Composites. I. Physicochemical Characterization

May 7, 2007
Author(s)
William Regnault, Tonya Icenogle, Joseph M. Antonucci, Drago Skrtic
… were polymerized and evaluated for mechanical strength and ion release profiles in different aqueous media. Strength of … and the pH of the liquid environment strongly affected the ion release kinetics. In saline, the UDMA/PEG-U composite … a sustained release for at least 350 h. The initially high ion release of the PEG-U composites decreased after 72 h, …

Entanglement of Four Particles

January 1, 2000
Author(s)
C A. Sackett, D Kielpinski, B E. King, Christopher Langer, V Meyer, C J. Myatt, M A. Rowe, Q A. Turchette, Wayne M. Itano, David J. Wineland, C Monroe
Quantum mechanics allows for many-particle wavefunctions that cannot be factorized into a product of single-particle wavefunctions, even when the constituent particles are entirely distinct. Such ‘entangled’ states explicitly demonstrate the non-local

Cancellation of Doppler Shifts in a Cold-Atom CPT Clock

July 25, 2013
Author(s)
Elizabeth A. Donley, Francois-Xavier R. Esnault, Eric M. Blanshan, John E. Kitching
A compact cold-atom clock based on coherent population trapping (CPT) is being developed. Long-term goals for the clock include achieving a fractional frequency accuracy of 1x10 -13 in a package of less than 10 cm 3 in volume. Here we present an overview

Collisional Electron-Detachment and Ion Conversion Processes in SF6

November 1, 1990
Author(s)
James K. Olthoff, Richard J. Van Brunt, Yicheng Wang, L. D. Doverspike, R. Champion
… 6th Intl. Swarm Seminar entitled Nonequilibrium Effects in Ion and Electron Transport, … Collisional Electron-Detachment and Ion Conversion Processes in SF6 …
Displaying 1251 - 1275 of 4634
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