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Displaying 1976 - 2000 of 2539

Asymptotic Properties of Self-Energy Coefficients

April 1, 2003
Author(s)
U Jentschura, E O. LeBigot, Peter J. Mohr, Paul Indelicato, G Soff
We investigate the asymptotic properties of higher-order binding corrections to the one-loop self energy of excited states in atomic hydrogen. We evaluate the historically problematic A 60 coefficient for all P states with principal quantum numbers n {less

Sr Lattice Clock at 1 x 10 -16 Fractional Uncertainty by Remote Optical Evaluation with a Ca clock

March 28, 2008
Author(s)
A D. Ludlow, T Zelevinsky, G K. Campbell, S Blatt, M M. Boyd, M de Miranda, M J. Martin, S M. Foreman, J Ye, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, Yann LeCoq, Zeb Barber, Nicola Poli, Nathan D. Lemke, K. Beck, Christopher W. Oates
… for large ensembles of atoms approaching that of the best ion systems. Rigorous evaluation of high performance clocks …

Polyelectrolyte Adsorption on Hydroxyapatite

November 1, 2001
Author(s)
Vincent A. Hackley
Hydroxyapatite (HAP) belongs to a family of structurally and chemically related, sparingly soluble calcium phosphate (CP) salts [1], and is the structural prototype for the principal mineral component of bone and teeth [2]. Well-defined synthetic HAP has

Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

April 27, 2023
Author(s)
Douglas Bennett, W.Bertrand (Randy) Doriese, Malcolm Durkin, Joseph Fowler, Johnathon Gard, Gene C. Hilton, Kelsey Morgan, Galen O'Neil, Carl D. Reintsema, Dan Schmidt, Daniel Swetz, Joel Ullom, Takuma Okumura
To test the bound-state quantum electrodynamics (BSQED), we have performed high precision x- ray spectroscopy of the 5g→4f and 5f→4d transitions (BSQED contribution of 2.4 eV and 5.2 eV, respectively) of muonic neons in the low-pressure gas phase under the

Origin and control of ionic hydration patterns in nanopores

June 18, 2021
Author(s)
Miraslau L. Barabash, William A. Gibby, Carlo Guardiani, Alexander Smolyanitsky, Dmitry G. Luchinsky, Peter V. McClintock
… In order to permeate a nanopore, an ion must overcome a dehydration energy barrier caused by the …

Frustrated Heisenberg J 1 -J 2 Model within the Stretched Diamond Lattice of LiYbO 2

January 14, 2021
Author(s)
Mitchell M. Bordelon, Chunxiao Liu, Lorenzo Posthuma, Eric Kenney, M. J. Graf, Nicholas Butch, Arnab Banerjee, Stuart Calder, Leon Balents, Stephen Wilson
We investigate the magnetic properties of LiYbO 2, containing a three-dimensionally frustrated, diamondlike lattice via neutron scattering, magnetization, and heat capacity measurements. The stretched diamond network of Yb 3+ ions in LiYbO 2 enters a long

Porous Organic Cages as Synthetic Water Channels

September 30, 2020
Author(s)
Yi D. Yuan, Jinqiao Dong, Jie Liu, Daohui Zhao, Hui Wu, Wei Zhou, Hui X. Gan, Yen W. Tong, Jianwen Jiang, Dan Zhao
Nature has protein channels (e.g., aquaporins) that preferentially transport water molecules while rejecting even the smallest hydrated ions. Aspirations to create robust synthetic counterparts have led to the development of a few one-dimensional (1D)
Displaying 1976 - 2000 of 2539
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