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Topic Area: Physics

Displaying records 621 to 630 of 763 records.
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621. Experimental Dynamics of Stressed, Strongly Correlated Plasmas, ed. by F. Anderegg, L. Schweikhard, and C.F. Driscoll
Topic: Physics
Published: 7/30/2001
Authors: T B Mitchell, John J Bollinger, Wayne M Itano, D HE Dubin

622. Analysis of Thin Layer Structures by X-Ray Reflectometry
Topic: Physics
Published: 7/1/2001
Authors: R Deslattes, R J Mayti
Abstract: The well-established structural methods of X-ray specular and diffuse scattering are less widely used in semiconductor metrology than their capababilities would suggest. We describe some technical enhancements that make these highly useful tools eve ...

623. Temperature-Dependent Behavior of PbSc^d1/2^Nb^d1/2^O^d3^ From First Principles
Topic: Physics
Published: 7/1/2001
Authors: Eric J Cockayne, Benjamin P Burton, L Bellaiche
Abstract: We study the ferroelectric phase transition in PbSc1/2Nb1/2O3 (PSN) using a first-principles effective Hamiltonian approach. Results for PSN with NaCl-type ordering of Sc and Nb on the B sites shows that a Pb-centered effective Hamiltonian is approp ...

624. Evaluating optical materials,
Topic: Physics
Published: 5/1/2001
Authors: Charles S Tarrio, Thomas B Lucatorto

625. JILA, National Institute of Standards and Technology, and University of Colorado at Boulder
Topic: Physics
Published: 5/1/2001
Authors: D Z Anderson, J E. Faller, M J Holland, L Kolvalenko, S R. Leone, R McCray, David J Nesbitt
Abstract: The revised JILA brochure, written for those interested in NIST programs as well as for prospective graduate students, postdoctoral associates, and visiting fellows, provides an overview of JILA and its mission, and explains the joint nature of the i ...

626. Wavelength Characterization of a Molecular F2 Laser at 157 nm for DUV Lithography
Topic: Physics
Published: 5/1/2001
Authors: Craig J Sansonetti, Joseph Reader
Abstract: The wavelengths of six spectral lines emitted by a molecular fluorine (F2) laser at 157 nm were measured to high accuracy with the 10.7-m normal-incidence vacuum spectrograph at the National Institute of Standards and Technology. Lines from a Pt/Ne ...

627. Sub-Dekahertz Spectroscopy of ^u199^Hg^u+^
Topic: Physics
Published: 3/13/2001
Authors: James C Bergquist, R J Rafac, B C Young, J Beall, Wayne M Itano, David J Wineland

628. T-Shaped Quantum Wires in Magnetic Fields: Weakly Confined Magnetoexcitons Beyond the Diamagnetic Limit
Topic: Physics
Published: 3/1/2001
Authors: Garnett W Bryant, Y B Band
Abstract: Optical excitations of magnetoexcitons in T-shaped wires are calculated and compared with experiment. We find the single-particle states for electrons and holes confined to a wire in a magnetic field and use these states as a basis for calculations ...

629. Time Measurement at the Millennium
Topic: Physics
Published: 3/1/2001
Authors: James C Bergquist, Steven R Jefferts, David J Wineland
Abstract: The latest clocks use a single ion to measure time with an anticipated precision of on part in 10^u18^

630. Relativistic Valence Bond Theory and Its Application to Metastable Xe^d2^
Topic: Physics
Published: 2/1/2001
Authors: Svetlana Alexandrovna Kotochigova, Eite Tiesinga, I Tupitsyn
Abstract: We present a new version of the relativistic configuration interaction valence bond (RCIVB) method. It is designed to perform an ab initio all-electron relativistic electronic structure calculation for diatomic molecules. A nonorthogonal basis set ...

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