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Displaying 551 - 575 of 3086

Energies and E1, M1, E2, and M2 transition rates for states of the 2s22p4, 2s2p5, and 2p6configurations in oxygen-like ions between F II and Kr XXIX.

September 24, 2013
Author(s)
P. Rynkun, P. Jonsson, G. Gaigalas, Charlotte F. Fischer
… 2s2p5, and 2p6 configurations in all oxygen-like ions between F II and Kr XXIX. Valence, core-valence, and … O-like ions, energies, lifetimes, transition rates, weighted … of the 2s22p4, 2s2p5, and 2p6configurations in oxygen-like ions between F II and Kr XXIX. …

Fragmentation of Leucine Enkephalin as a Function of Laser Fluence in a MALDI TOF-TOF

April 2, 2007
Author(s)
Jennifer M. Campbell, Stephen Stein, Paul S. Blank, Jonathan Epstein, Marvin L. Vestal, Alfred L. Yergey
… The effects of laser fluence on ion formation in MALDI was studied using a tandem TOF mass … followed over laser fluence ranging from the threshold of ion formation to the maximum available, i.e., approximately … data suggest the presence of two distinct environments for ion formation. One is associated with molecular desorption at …

Heavy ion space radiation triggers ongoing DNA base damage by downregulating DNA repair pathways

July 7, 2020
Author(s)
Shubhankar Suman, Pawel Jaruga, M Miral Dizdar, Albert J. Fornace, Jr., Datta Kamal
… particle radiation especially to highly damaging heavy ion radiation, which poses considerable risk to astronauts' … diseases including gastrointestinal diseases after heavy ion radiation exposure during space travel. … Heavy ion space radiation, DNA damage and repair, oxidative stress, …

Architecture for a Large-Scale Ion-Trap Quantum Computer

January 1, 2002
Author(s)
D Kielpinski, C R. Monroe, David J. Wineland
… being explored for quantum computers are systems utilizing ion traps, in which quantum bits (qubits) are formed from the … on using quantum communication to link a number of small ion- trap quantum systems. Developing the array-based … subspaces significantly reduces decoherence during ion transport, and removes the requirement of clock …

Comparison of Mg-based liquid metal ion sources for scalable focused-ion-implantation doping of GaN

April 18, 2024
Author(s)
Aaron Katzenmeyer, Michael Titze, Sam Frisone, Tony Ohlhausen, Anthony Flores, Deanna Campbell, Bingjun Li, Yongqiang Wang, Jung Han, Edward Bielejec, Rachel Goldman
… suitability of various magnesium-based liquid metal alloy ion sources (LMAIS) for scalable focused-ion-beam (FIB) implantation doping of GaN. We consider GaMg, … Mg depth profile data from Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS). We also provide insight …

Multi-configuration Dirac-Hartree-Fock calculations of forbidden transitions within the 3d^k ground configurations of highly charged ions (Z = 72 - 83)

February 21, 2017
Author(s)
Z.L. Zhao, K. Wang, S. Li, R. Si, C.Y. Chen, J. Yan, Yuri Ralchenko
… 3p^6 3d^k(k = 1−9) ground configurations of highly charged ions (Z = 72−83). Complete and consistent data sets of level … Dirac-Hartree-Fock calculations, highly charged ions, magnetic dipole transitions, electric quadrupole … within the 3d^k ground configurations of highly charged ions (Z = 72 - 83) …

Simultaneous neutron and X-ray tomography for ex-situ 3D visualization of graphite anode degradation from extremely fast-charged lithium-ion batteries

November 16, 2022
Author(s)
Maha Yusuf, Jacob LaManna, Partha Paul, David Agyeman-Budu, Chuntian Cao, Alison Dunlop, Andrew Jansen, Bryant Polzin, Stephen Trask, Tanvir Tanim, Eric Dufek, Vivek Thampy, Hans-Georg Steinruck, Michael Toney, Johanna Weker
… Extreme fast charging (XFC) of commercial lithium-ion batteries (LIBs) in ≤10-15 minutes will significantly … X-ray imaging, tomography, extreme-fast charging, lithium-ion batteries … anode degradation from extremely fast-charged lithium-ion batteries …

Bevel Depth Profiling SIMS for Analysis of Layer Structures

September 1, 2003
Author(s)
John G. Gillen, Scott A. Wight, P Chi, Albert J. Fahey, Jennifer R. Verkouteren, Eric S. Windsor, D. B. Fenner
… are evaluating the use of bevel depth profiling Secondary Ion Mass Spectrometry (SIMS) for the characterization of … the analytical sample with an oxygen or cesium primary ion beam in a commercial SIMS instrument. The elemental … the resulting bevel surface is then imaged with a focused ion beam in the same instrument. This approach offers maximum …

Quantum Electrodynamics in the Dark

August 1, 2001
Author(s)
John D. Gillaspy
… dielectronic recombination, highly charged ions, ion traps, QED, quantum electrodynamics, strong electric …

Measuring Ion-Pairing in Buffer Solutions with Microwave Microfluidics

June 14, 2018
Author(s)
Angela C. Stelson, Charles A. Little, Nathan D. Orloff, Christian J. Long, James C. Booth
… such as electrical double layers (EDL), solvent-mediated ion interactions, and bound water molecules. However, … relaxations associated with the EDL, water molecules, and ion-pairing in solution. We compare the three-Debye … fit to a Cole-Cole/Debye model which does not include the ion-pairing relaxation, and find improved goodness of fit. …

Density changes in amorphous silicon induced by swift heavy ions

October 4, 2022
Author(s)
Sjoerd Roorda, Amelie Lacroix, Stephanie Codsi, Gabrielle Long, Fan Zhang, Steven Weigand, Christina Trautmann
… silicon membranes were irradiated with swift heavy ions (75 MeV Ag or 1.1 GeV Au ions) and studied by small angle X-ray scattering. The samples that were irradiated with 1.1 GeV Au ions produced a scattering pattern consistent with core-shell … Density changes in amorphous silicon induced by swift heavy ions …

Chemical Ionization of Saturated Hydrocarbons Using Organometallic Ion Chemistry

July 1, 2002
Author(s)
H M. Byrd, Charles M. Guttman, D P. Ridge
… the feasibility of the h5-cyclopentadienylcobalt ion (CpCo +) as a suitable cationization reagent for … hydrocarbons analysis by mass spectrometry.Methods: Ion/molecule reactions of CpCo + and selected linear alkanes … (no. of C atoms 15) were examined using Fourier-transform ion cyclotron resonance mass spectrometry. Second-order rate …

EBIT Diagnostics Using X-ray Spectra of Highly Ionized Ne

May 1, 2003
Author(s)
M Matranga, M Barbera, A Maggio, G Peres, S Serio, E Takacs, E Silver, John D. Gillaspy, H. Schnopper, J M. Laming, J. Beeman, E. E. Haller, N. Madden
… line ratio. We have investigated possible effects of the ion dynamics on the plasma emission line intensities, looking … and hence the overlap between the electron beam and the ion cloud, depend on the electron beam operating parameters. … the value of future improved studies of the trapped ion dynamics, both for understanding the EBIT performance and …
Displaying 551 - 575 of 3086
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