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Displaying 676 - 700 of 3311

Frequency-comb spectroscopy on pure quantum states of a single molecular ion

March 27, 2020
Author(s)
Chin-wen Chou, Alejandra L. Collopy, Christoph Kurz, Yiheng Lin, Michael E. Harding, Philipp N. Plessow, Tara M. Fortier, Scott A. Diddams, Dietrich G. Leibfried, David R. Leibrandt
… techniques to prepare a single trapped molecular ion in a pure quantum state, drive terahertz rotational … spectroscopy on pure quantum states of a single molecular ion …

High Resolution Atomic Spectroscopy of Laser-Cooled Ions

January 1, 1991
Author(s)
David J. Wineland, James C. Bergquist, John J. Bollinger, Wayne M. Itano, F L. Moore, J M. Gilligan, M G. Raizen, C S. Weimer, C H. Manney
… Enrico Fermi Summer School Laser Manipulation of Atoms and Ions August 1991 Pages … High Resolution Atomic Spectroscopy of Laser-Cooled Ions …

Detection and Speciation of Brominated Flame Retardants in High-Impact Polystyrene (HIPS) Polymers

March 27, 2012
Author(s)
Richard D. Holbrook, Jeffrey M. Davis, Keana C. Scott, Christopher W. Szakal
… micro X-ray Fluorescence Spectroscopy (µXRF), Focused Ion Beam Scanning Electron Microscopy (FIB SEM) combined with … X-ray Spectroscopy (EDS), and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS), are promising techniques … "Brominated Flame Retardants", "Focused Ion Beam Scanning Electron Microscopy", "Secondary Ion Mass …

Quantum interference between photons from an atomic ensemble and a remote atomic ion

November 18, 2019
Author(s)
A. Craddock, J. Hannegan, D. Ornelas-Huerta, J. Siverns, A. Hachtel, E. Goldschmidt, James V. Porto, Q. Quraishi, S. Rolston
… interference between photons generated from a single ion and an atomic ensemble. The photons are produced on … Given these results, we analyze the feasibility of hybrid ion-ensemble remote entanglement generation. … photons from an atomic ensemble and a remote atomic ion …

Ratio of the Al + and Hg + Optical Clock Frequencies to 17 Decimal Places

August 25, 2008
Author(s)
Wayne M. Itano, Till P. Rosenband, David Hume, P.O. Schmidt, Chin-Wen Chou, A. Brusch, Luca Lorini, Windell Oskay, Robert E. Drullinger, Sarah Bickman, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, William C. Swann, Nathan R. Newbury, David J. Wineland, James C. Bergquist
… for state preparation and detection. Coupling with a Be + ion, trapped simultaneously with the Al + ion, enables state manipulation, detection, and cooling of the Al + ion. Both standards have achieved absolute reproducibilities … atomic clocks, frequency standards, fundamental constants, ion traps, mercury, optical frequency standards …

Microscopic Insights into Ion Gel Dynamics using Neutron Spectroscopy

August 1, 2012
Author(s)
Maiko Kofu, Takenori Someya, Soichi Tatsumi, Kazuhide Ueno, Takeshi Ueki, Masayoshi Watanabe, Takuro Matsunaga, Mitsuhiro Shibayama, Victoria Garcia Sakai, Madhu Sudan Tyagi, Osamu Yamamuro
… We have investigated the microscopic dynamics of ion gels consisting of a PMMA [poly(methyl methacrylate)] … by means of quasi-elastic neutron scattering (QENS). These ion gels interestingly exhibit two glass transitions (T g S) … Microscopic Insights into Ion Gel Dynamics using Neutron Spectroscopy …

Monte Carlo / RRKM / Classical Trajectories Modeling of Collisional Excitation and Dissociation of n-Butylbenzene Ion in Multipole Collision Cells of Tandem Mass Spectrometers

May 18, 2010
Author(s)
Vadim D. Knyazev, Stephen Stein
… C 7 H 8 + ) ions in the electromagnetic field of multipole ion guides and collision cells, classical trajectory modeling … and scattering of ions, and RRKM modeling of the parent ion decomposition. Experimental information on the energy … Collisional Excitation and Dissociation of n-Butylbenzene Ion in Multipole Collision Cells of Tandem Mass Spectrometers …

Origin of Electrical Signals for Plasma Etching Endpoint Detection

November 18, 2011
Author(s)
Mark A. Sobolewski
… in substrate surface properties such as photoemitted or ion-induced electron yield. To investigate these effects, … in rf bias impedance coincides with an increase in ion current density and a change in the electron energy … distribution function (EEDF). The measured changes in ion current and EEDF, when input into a numerical model of …

Improving the efficiency of Monte Carlo simulations of ions using expanded grand canonical ensembles

October 9, 2019
Author(s)
Harold W. Hatch, Steven W. Hall, Jeffery R. Errington, Vincent K. Shen
… apparent requirement to insert and delete neutral sets of ions simultaneously in order to maintain charge neutrality. … by gradual insertion and deletion of these neutral sets of ions. We introduce an expanded ensemble approach which may be … existing methods to further improve efficiency. Individual ions are inserted or deleted in one Monte Carlo trial rather …

Spectral Data for Atoms and Ions

November 1, 2000
Author(s)
Joseph Reader
… of databases for spectral properties of atoms and ions. Version 2.0 of the NIST Atomic Spectra Database (ASD) … Spectral Data for Atoms and Ions …
Displaying 676 - 700 of 3311
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