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Topic Area: Atomic Physics

Displaying records 1 to 10 of 76 records.
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1. Critically Evaluated Energy Levels and Spectral Lines of Singly Ionized Indium (In II)
Series: Journal of Research (NIST JRES)
Report Number: 118.004
Topic: Atomic Physics
Published: 1/14/2013
Author: Alexander Kramida
Abstract: A comprehensive list of the best measured wavelengths in the In II spectrum has been compiled. Uncertainties of the wavelength measurements have been analyzed, and existing inconsistencies have been resolved. An optimized set of fine-structure en ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=911121

2. Observation of a superfluid Hall effect
Topic: Atomic Physics
Published: 7/3/2012
Authors: Lindsay Jane LeBlanc, Karina K. Jimenez Garcia, Ross Alexander Williams, Matthew Charles Beeler, Abigail Reiko Perry, William D Phillips, Ian B Spielman
Abstract: Measurement techniques based upon the Hall effect are essential tools in condensed matter physics. Here, we report the first observation of a Hall effect in an ultracold gas of neutral atoms, revealed by measuring Bose-Einstein condensate's transpo ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=910505

3. Demonstration of Superluminal Images
Topic: Atomic Physics
Published: 6/19/2012
Authors: Ryan Thomas Glasser, Ulrich Vogl, Paul D Lett
Abstract: Optical pulse propagation with group velocities larger than the speed of light in vacuum, c, or negative, have been demonstrated theoretically and experimentally in a variety of systems [1–5]. The anomalous dispersion required for generating “fast” l ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=910700

4. Stimulated Generation of Superluminal Light Pulses via Four-wave Mixing
Topic: Atomic Physics
Published: 4/26/2012
Authors: Ryan Thomas Glasser, Ulrich Vogl, Paul D Lett
Abstract: We report on the four-wave mixing of superluminal pulses, in which both the injected and generated pulses involved in the process propagate with negative group velocities. Generated pulses with negative group velocities of up to vg = −c/880 ar ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=910231

5. Energy Levels and Observed Spectral Lines of Neutral and Singly Ionized Titanium, Ti I and Ti II
Series: J. Phys. & Chem. Ref. Data (JPCRD)
Topic: Atomic Physics
Published: 1/12/2012
Author: Edward Barry Saloman
Abstract: The energy levels and observed spectral lines of neutral and singly ionized titanium atoms have been compiled. Tables of energy levels and spectral lines are generated for each stage. Experimental g-factors and leading percentages are included when ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=909339

6. SURF III: A flexible Synchrotron Radiation Source for Radiometry and Research
Topic: Atomic Physics
Published: 9/1/2011
Authors: Uwe Arp, Charles W Clark, Lu Deng, Nadir Sabirovich Faradzhev, Alex P. Farrell, Mitchell L. Furst, Steven Grantham, Edward Walter Hagley, Shannon Bradley Hill, Thomas B Lucatorto, Ping-Shine Shaw, Charles S. Tarrio, Robert Edward Vest
Abstract: The calculability of synchrotron radiation (SR) makes electron storage rings wonderful light sources for radiometry. The broadband nature of SR allows coverage of the whole spectral region from the x-ray to the far-infrared. Compact low-energy storag ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=906750

7. Magnetic switching fluctuations from sidewall oxides in MgO/FeCoB magnetic tunnel junctions
Topic: Atomic Physics
Published: 8/30/2011
Authors: Joshua M Pomeroy, J C Read
Abstract: Sharp magnetic switching distributions with coupling to magnetic sidewall oxides in FeCoB/MgO magnetic tunnel junctions (MTJs) are revealed by magneto-resistance first order reversal curve (MR-FORC) measurements. Tunneling magneto-resistance (TMR) ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=908760

8. Charge state dependent energy deposition by ion impacts
Topic: Atomic Physics
Published: 8/5/2011
Authors: Russell Lake, Joshua M Pomeroy, Holger Grube, C E Sosolik
Abstract: We report on a measurement of craters in thin dielectric films formed by XeQ+ (26  Q  44) projectiles. Tunnel junction devices with ion-irradiated barriers were used to amplify the effect of charge-dependent cratering through the exponential depend ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=908452

9. Critical capture distances for highly charged ions above dielectric covered metal surfaces
Topic: Atomic Physics
Published: 6/1/2011
Authors: Russell Lake, Joshua M Pomeroy, C E Sosolik
Abstract: We model the first stage of the electronic interaction between an ion and a metal surface covered with a thin dielectric layer. Specifically, we seek to answer two questions. (i) As an ion approaches the surface from far away, does the first electron ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=907439

10. Fe xvii X-ray Line Ratios for Accurate Astrophysical Plasma Diagnostics
Topic: Atomic Physics
Published: 2/20/2011
Authors: John D Gillaspy, E. H. Silver, L. Tedesco, Joseph N Tan, Joshua M Pomeroy, J M Laming, G.-X. Chen, T. Lin
Abstract: New laboratory measurements of the Ne-like Fe xvii x-ray lines in the 15-17 Angstrom range are presented, along with new theoretical predictions. These results establish consistency between independent laboratories and opens the door to trustworthy ...
http://nist.gov/manuscript-publication-search.cfm?pub_id=903971