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Displaying 401 - 425 of 4258

A comprehensive analysis of the spectrum of Fe II

October 28, 2010
Author(s)
Gillian Nave
… A new analysis of the laboratory spectrum of Fe II is described. The aim is to produce a comprehensive list of Fe II lines, based on high-resolution grating and Fourier … A comprehensive analysis of the spectrum of Fe II …

Emission-Line Intensity Ratios in FeXVII Observed with a Microcalorimeter on an Electron Beam Ion Trap

December 1, 2000
Author(s)
J M. Laming, I Kink, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, N Brickhouse, S Murray, M Barbera, A K. Bhatia, G. A. Doschek, N. Madden, D Landis, J. Beeman, E. E. Haller
… Institute of Standards and Technology electron beam ion trap (EBIT) with a microcalorimeter detector. . . .Both … atoms, electron beam ion trap, emission-line intensity ratios, intensity ratios, … Observed with a Microcalorimeter on an Electron Beam Ion Trap …

Heavy Ion Induced Soft Breakdown of Thin Gate Oxides

December 1, 2001
Author(s)
J. F. Conley, John S. Suehle, A. H. Johnston, Bin Wang, T Miyahara, Eric M. Vogel, J B. Bernstein
… Heavy ion induced soft and hard breakdown are investigated in thin … reliability, radiation effects, soft breakdown, heavy ion irradiation, microelectronics … Heavy Ion Induced Soft Breakdown of Thin Gate Oxides …

Selectable Resistance-Area Product by Dilute Highly Charged Ion Irradiation

August 13, 2007
Author(s)
Joshua M. Pomeroy, Holger Grube, A C. Perrella, John D. Gillaspy
… from a single process recipe using highly charged ion (HCI) irradiation. The HCI irradiation occurs after … tunnel barrier. The neutralization of the highly charged ion on the tunnel barrier surface (Xe44+) ablates a small … Selectable Resistance-Area Product by Dilute Highly Charged Ion Irradiation …

The Ne II Spectrum

October 16, 2008
Author(s)
Alexander Kramida, Gillian Nave
… a complete list of approximately 1700 spectral lines of Ne II covering the range from 324 to 13 m. All known energy levels of Ne II were derived from this line list with improved accuracy. … The Ne II Spectrum …

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 …

Observations and identifications of extreme ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap

August 23, 2023
Author(s)
Yang Yang, Dipti Dipti, Chihiro Suzukic, A. C. Gall, R. Silwal, Samuel Sanders, Joseph N. Tan, Aung S. Naing, Endre Takacs, Yuri Ralchenko
… Ca-like, Nd40+, through Nalike, Nd49+, highly charged ions have been measured at an electron beam ion trap (EBIT) facility at the National Institute of … EUV spectroscopy, neodymium, electron beam ion trap, collisional-radiative modeling, line identification … ultraviolet spectra of Ca-like to Na-like neodymium ions using an electron beam ion trap …

Measurement of Uranium-236 in Particles by Secondary Ion Mass Spectrometry

January 12, 2017
Author(s)
David S. Simons, John D. Fassett
… of the relative isotopic abundance by secondary ion mass spectrometry of 236U in uranium-containing material … hydride, isotope, isotopic abundance, particle, secondary ion mass spectrometry, SIMS, uranium … Measurement of Uranium-236 in Particles by Secondary Ion Mass Spectrometry …

Wavelengths of Fe II lines for studies of time-variation of the fine structure constant

January 24, 2012
Author(s)
Gillian Nave
… Ritz wavelengths of 27 spectral lines of Fe II of have been derived from Fourier transform spectra. The … measurements, wavelengths for 21 lines of Mg I, Mg II, CrII, Ti II, Mn II, Ni II and Zn II have been placed on a consistent … Wavelengths of Fe II lines for studies of time-variation of the fine structure …

Electron-Impact Total Ionization Cross Sections of Hydrocarbon Ions

February 1, 2002
Author(s)
Karl K. Irikura, Yong Sik Kim, M A. Ali
… 6 + , and H 3 O + . The cross sections for the hydrocarbon ions are needed for modeling cool plasmas in fusion devices. … , CH 4 + , electron-impact ionization, H 3 O + , molecular ions … Total Ionization Cross Sections of Hydrocarbon Ions …

A Common-Path Heterodyne Interferometer for Surface Profiling in Microelectronic Fabrication

May 1, 2001
Author(s)
E J. Klein, A P. Ramirez, John L. Hall
… It is shown that repeated surface profiling during the ion milling process allows the difference in etch rates … The surface profiles of both a photopatterned nickel-iron trench and an unmasked aluminum trench are measured and … interferometry, interferometry, process control, reactive ion etching …

Precise Wavelengths for Fe, Ge and Pt in the Region Near 1935

October 16, 2008
Author(s)
Gillian Nave, Craig J. Sansonetti
… at 193 nm. Previously reported wavelengths of Fe I, Cu II, and Ge I were evaluated for calibration of the absolute … be several parts in 10 8 . A calibration based on Cu II was internally inconsistent at a level of 2 parts in 10 7 … wavelengths for an additional 147 lines of Pt I and Pt II and 161 lines of Kr II in the region 1636 to 3151 are also …

Experimental Study of the Inhibition of Premixed and Diffusion Flames by Iron Pentacarbonyl

July 21, 1996
Author(s)
D Reinelt, Gregory T. Linteris
… a condensed phase. This paper investigates the behavior of iron pentacarbonyl (Fe(CO)5), one of the most efficient … strain rate and laminar burning velocity with addition of iron pentacarbonyl is determined over moderate ranges of … of the Inhibition of Premixed and Diffusion Flames by Iron Pentacarbonyl …

Measurements and Modeling of Ion Energy Distributions in High-Density, Radio-Frequency Biased CF 4 Discharges

May 1, 2002
Author(s)
Mark A. Sobolewski, Yicheng Wang, A N. Goyette
… Models of ion dynamics in radio-frequency (rf) biased, high-density plasma sheaths are needed to predict ion bombardment energies in plasma simulations. To test these models, we have measured ion energy distributions (IEDs) in pure CF 4 discharges at … CF4, high-density plasma, inductively coupled discharge, ion energy distribution, plasma processing, radio-frequency …

The Conversion of SURF II to SURF III

April 2, 1999
Author(s)
Mitchell L. Furst, R M. Graves, A D. Hamilton, L R. Hughey, R P. Madden, Robert E. Vest, W S. Trzeciak, L Greenler, P Robl, D Wahl
… synchrotron, the facility was converted into the SURF II electron storage ring in 1974. Since then, SURF II has been the United States national standard of irradiance … spectral region, but the radiometric accuracy of SURF II was limited by the uniformity of the magnetic field …

Equilibration of the planar modes of ultracold two-dimensional ion crystals in a Penning trap

May 11, 2020
Author(s)
Chen Tang, Athreya Shankar, Daniel Dubin, Dominic Meiser, Scott Parker, John J. Bollinger
… direct numerical simulations of ultracold two-dimensional ion crystals in a Penning trap with a rotating wall. The … in-plane modes and improve the performance of single plane ion crystals for quantum information processing. … of the planar modes of ultracold two-dimensional ion crystals in a Penning trap …

Iron-sulfur clusters are involved in post-translational arginylation

January 28, 2023
Author(s)
Verna Van, Janae Brown, Corin R. O'Shea, Hannah Rosenbach, Ijaz Mohamed, Nna-Emeka Ejimogu, Toan Bui, Veronika Szalai, Kelly Chacon, Ingrid Span, Aaron T. Smith
… iron sulfur cluster, arginylation, arginine transferase, … Iron-sulfur clusters are involved in post-translational …

Changes in Lactate and Other Ions in Plaque and Saliva After a Fluoride Rinse and Subsequent Sucrose Administration

January 1, 2002
Author(s)
Gerald L. Vogel, Z Zhang, Laurence C. Chow, A L. Galvin
… studies showing a pH mediated increase in the latter ions, was due to salivary clearance or diffusive loss into … of the rinses. Similarly the site distribution of all ions appeared to be not only controlled by these factors … (fluoride, sucrose and water), as well as the clearance of ions into these components require further study if a …
Displaying 401 - 425 of 4258
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