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Displaying 401 - 425 of 4633

Scanning Ion Microscopy with Low Energy Lithium Ions

July 1, 2014
Author(s)
Kevin A. Twedt, Lei Chen, Jabez J. McClelland
… Using an ion source based on photoionization of laser-cooled lithium atoms, we have developed a scanning ion microscope with probe sizes of a few tens of nanometers … in ion microscopy when detecting backscattered ions, due to a decreased interaction volume and the potential …

Dielectronic resonances of LMn and LNn (? 4) series in highly-charged M-shell tungsten ions

March 4, 2020
Author(s)
Dipti Goyal, A. Borovik, Jr., R. Silwal, Joan M. Dreiling, Amy C. Gall, Endre Takacs, Yuri Ralchenko
… 4) dielectronic resonances (DR) in highly-charged M-shell ions of tungsten. The x-ray emission from W$^49+}$ through … resonances, Collisional-radiative modeling, M-shell ions. … and LNn (? 4) series in highly-charged M-shell tungsten ions …

Calibration and Characterization of Trap Detector Filter Radiometers

November 1, 2003
Author(s)
David W. Allen, George P. Eppeldauer, Steven W. Brown, E A. Early, Bettye C. Johnson, Keith R. Lykke
… The filter radiometer consists of a six-element Si trap detector, a temperature stabilized filter wheel with up … in radiance mode; with it removed, in irradiance mode. Two trap detector filter radiometers have been designed and built … radiometer, remote sensing, trap detector …

Quantum Logic with a Few Trapped Ions

January 1, 1998
Author(s)
C Monroe, Wayne M. Itano, D Kielpinski, B E. King, Dietrich Leibfried, C J. Myatt, Q A. Turchette, David J. Wineland, Chris S. Wood
… Quantum Logic with a Few Trapped Ions …

Sodium Carbazolide and Derivatives as Solid-State Electrolytes for Sodium-Ion Batteries

June 26, 2023
Author(s)
Yang Yu, Jintao Wang, Zhaoxian Qin, Yingtong Lv, Qijun Pei, Khai C. Tan, Tengfei Zhang, Anan Wu, Hui Wu, Andrew S. Lipton, Ping Chen
… (SSEs) could effectively solve the safety issues in sodium-ion batteries. Efforts on seeking novel solid-state … fast ion conduction, electrolyte, sodium-ion battery, metal hydride … and Derivatives as Solid-State Electrolytes for Sodium-Ion Batteries …

Feasibility study of quantum computing using trapped electrons

February 15, 2022
Author(s)
Qian Yu, Alberto Alonso, Jackie Caminiti, Robert Sutherland, Dietrich Leibfried, Kayla Rodriguez, Madhav Dhital, Boerge Hemmerling, Hartmut Haeffner, Kristin Beck
… Feasibility study of quantum computing using trapped electrons …

Performance of a C 60 + Ion Source on a Dynamic SIMS Instrument

July 1, 2006
Author(s)
Albert J. Fahey, John G. Gillen, P Chi, Christine M. Mahoney
… An IonOptika [1] C60+ ion source has been fitted onto a CAMECA [1] ims-4f. Stable ion beams of C60+ and C602+ have been obtained with typical … able to be focussed into a spot size of ~1 ?m and scanning ion images acquired. We have performed analyses to … Buckministerfullerene, cluster ion beams, ion source, SIMS ion source …

Measurement-induced quantum phases realized in a trapped-ion quantum computer

June 2, 2022
Author(s)
Michael Gullans, Alexey Gorshkov, David Huse, Christopher Monroe, Crystal Noel, Pradeep Niroula, Daiwei Zhu, Andrew Risinger, Laird Egan, Debopriyo Biswas, Marko Cetina
… this balance via random quantum circuits implemented on a trapped-ion quantum computer, where the system evolution is … Measurement-induced quantum phases realized in a trapped-ion quantum computer …

Analytical and Experimental Assessment of Steel Truss Bridge Gusset Plate Connections

June 8, 2011
Author(s)
Mark A. Iadicola, Yavuz Mentes, Yoon D. Kim, Robert S. Zobel, Donald W. White, Roberto T. Leon, Justin M. Ocel
… from comprehensive studies of steel truss bridge gusset plate behavior and proposes practical design procedures. The … and Experimental Assessment of Steel Truss Bridge Gusset Plate Connections …

Noninvasive monitoring of ion current and ion energy during plasma processing

July 15, 2008
Author(s)
Mark A. Sobolewski
… technique has been developed for noninvasive monitoring of ion energy and ion current in plasma reactors. The technique relies on … electrical waveforms, the technique determines the total ion current, the plasma potential and sheath voltage … ion current, ion energy, electrical measurements, inductively …

Cold atomic beam ion source for focused ion beam applications

July 23, 2013
Author(s)
Brenton J. Knuffman, Adam V. Steele, Jabez J. McClelland
… We report measurements and modeling performed on an ion source based on ionization of a laser-cooled atomic beam. … for use in next-generation, high-resolution focused ion beam (FIB) systems. Our measurements of total ion current as a function of ionization conditions support a …

Ion-Molecule Reactions and Ion Energies in CF 4 Discharges

December 1, 1999
Author(s)
B. Peko, I. V. Dyakov, R. Champion, MVVS. Rao, James K. Olthoff
… E/N values ranging from 4 x 10 -18 V m 2 (4 to 25 kTd). Ion energy and ion intensity data for the Townsend discharges are analyzed … cross sections, dissociative charge transfer, ion energies, ion molecule reactions, Townsend discharge … Ion-Molecule Reactions and Ion Energies in CF 4 Discharges …

Fluorescence From Alexa 488 Fluorophore Immobilized on a Modified Gold Electrode

September 14, 1999
Author(s)
L. Li, T Ruzgas, Adolfas Gaigalas
… 488 fluorophore immobilized on a modified polycrystalline gold electrode. In the range of potentials 0.5 to +0.2 V vs … Fluorescence, gold electrode, immobilized fluorophore, potential dependence … From Alexa 488 Fluorophore Immobilized on a Modified Gold Electrode …

Development of Silicon Micromachined Waveguide Filter-Banks for On-Chip Spectrometers

January 12, 2026
Author(s)
Matthew Koc, Jason Austermann, James Beall, Johannes Hubmayr, Michael Vissers, Jordan Wheeler
… Si waveguide filter-bank fabricated using deep reactive ion etching for use in millimeter spectroscopy. Our design … compatible with simple and multiplexable MKID arrays. Gold plated test waveguide and filter show excellent match to … deep reactive ion etching, fabrication, filter-bank, waveguide …

Experiments With Strontium in a Vapor Cell Magneto-Optic Trap

May 1, 2000
Author(s)
K R. Vogel, Tim P. Dinneen, Alan Gallagher, J L. Hall
… vapor cell we have created a robust Sr magneto-optical trap that stores about 10 8 atoms with lifetimes > 200 ms. We … 1 d2 ->5p 3 P 2 leak and achieve a 10-fold improvement in trap lifetime by repumping the 5p 3 Po.2 dark states with 679 … of the 2-body loss rate. Direct readout of the trap velocity distribution is possible using the narrow …

High-brightness Cs focused ion beam from a cold-atomic-beam ion source

May 2, 2017
Author(s)
Adam V. Steele, Andrew Schwarzkopf, Jabez J. McClelland, Brenton Knuffman
… of focal spot size and brightness in a focused ion beam system utilizing a laser-cooled atomic beam source … than the highest brightness observed in a Ga liquid metal ion source. The behavior of brightness as a function of beam … as next-generation circuit edit and nanoscale secondary ion mass spectrometry. …

Ion Solvation in Water Acetonitrile Mixtures

January 1, 2001
Author(s)
Raymond D. Mountain
… The results of a preliminary molecular dynamics study of ion (NA+ and Cl-) solvation and association in water, … is expected to be an important factor governing ion solvation and association. Results for ions in pure water … than the temperature in determining the degree of ion association. Preliminary results for the mixtures are …

Advances in source technology for focused ion beam instruments

April 1, 2014
Author(s)
Noel Smith, John Notte, Adam V. Steele
… Owing to the development of new ion source technology, users of focused ion beams (FIBs) have an increasingly wide array of uniquely … capable platforms to choose from. Specifically, the new ion sources are able to offer superior performance in several … ion sources, focused ion beams, inductively coupled plasma, …

Quantitative secondary ion mass spectrometry imaging of self-assembled monolayer films for electron beam dose mapping in the environmental scanning electron microscope

July 1, 1998
Author(s)
John G. Gillen, Scott A. Wight, David S. Bright, T M. Herne
… at different levels of electron dose. Microbeam secondary ion mass spectrometry [SIMS] using Cs+ bombardment is then used to image the F- secondary ion signal from these areas. From the reduction in F- … curve is generated that allows conversion of secondary ion signal to electron dose on a pixel-by-pixel basis. Using …
Displaying 401 - 425 of 4633
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