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Journals

Design and Evaluation of Large Aperture Gallium Fixed Point Blackbody

October 12, 2021

Author(s)

V B. Khromchenko, Sergey Mekhontsev, Leonard Hanssen

To complement existing water bath blackbodies which are now serving as NIST primary standard sources in the temperature range from 15 C to 75 C, a gallium fixed...

Multiquantum vibrational deactivation of N₂+(V) by collisions with N₂ and O₂ at thermal energy

October 12, 2021

Author(s)

S Kato, V M. Bierbaum, S R. Leone

Vibrational deactivation and charge transfer in the collisions of N 2+(v=0-4) with N 2 and O 2 are studied at thermal energy. State-specific rate constants for...

Measurement of Thermophysical Properties for Future Development of Cryogenic Radiometers

October 12, 2021

Author(s)

Z M. Zhang, Steven R. Lorentz, Joseph P. Rice, Raju V. Datla

We have measured the thermal conductivity of polyimide at temperatures from 2.4 K to 8 K, and specific heats of polyimide and a black paint at 2.4 K and 4.4 K...

A NLTE analysis of the ζ Aurigae B-type secondary I. Determination of the fundamental stellar parameters

October 12, 2021

Author(s)

P D. Bennett, A Brown, J L. Linsky

We present a model atmosphere analysis of the B star secondary of ζ Aurigae (B5 V+K4Ib), and determine its stellar parameters. A grid of model atmospheres and...

Radon Progeny Microdosimetry in Human and Rat Bronchial Airways: The Effect of Crossfire From the Alveolar Region

October 12, 2021

Author(s)

H Fakir, W Hofmann, Randall S. Caswell

The objectives of the present study wee (i) to present a comprehensive analysis of the microdosimetric quantities in both human and rat bronchial airways and...

Electron-Phonon Scattering in Quantum Wires Exposed to a Perpendicular Magnetic Field

October 12, 2021

Author(s)

M Aghasyan, S M. Badalyan, Garnett W. Bryant

A theory of test electron and electron temperature relaxation in quantum wires due to acoustical and optical phonon scattering is presented. The intra- and...

Third-Order Relativistic Many-Body Calculations of Energies and Lifetimes of Levels Along the Silver Isoelectronic Sequence

October 12, 2021

Author(s)

U I. Safronova, I Savukov, M S. Safronova, W R. Johnson

Energies of 5lj (l = s, p, d, f, g) and 4fj states in neutral Ag and Ag-like ions with nuclear charges Z = 48 - 100 are calculated using relativistic many-body...

Kinetic Theory of a Spin-1/2 Bose-Condensed Gas

October 12, 2021

Author(s)

T Nikuni, J E. Williams

We derive a kinetic theory for a spin-1/2 Bose-condensed gas of two-level atoms at finite temperatures. The condensate dynamics is described by a generalized...

Excited Thomas-Efimov Levels in Ultracold Gases

October 12, 2021

Author(s)

M D. Lee, T Koehler, Paul S. Julienne

Since the early days of quantum physics, the complex behavior of three interacting particles has been the subject of numerous experimental and theoretical...

Improved Transition Oscillator Probabilities for Laser Transitions in Xe I

October 12, 2021

Author(s)

Abhijit Dasgupta, J P. Apruzes, O Zatsarinny, K Bartschat, Charlotte F. Fischer

The atomic xenon laser is among the most efficient and powerful of thenear-infrared gas lasers, especially when pumped by molecular ions in an Ar-Xemixture...

A High-Field, Low-Current Superconducting Ioffe Magnetic Trap

October 12, 2021

Author(s)

S N. Dzhosyuk, C R. Brome, J S. Butterworth, P R. Huffman, C E. Mattoni, D N. McKinsey, R A. Michniak, L Yang, John M. Doyle

A superconducting Ioffe magnetic trap is designed, built and characterized. The trap consists of four racetrack-shaped quadrupole coils and two solenoid...

Investigation of Different Growth Steps in the Preparation of Layer-by-Layer Self-Assembled Films by Second Harmonic Generation

October 12, 2021

Author(s)

M Breit, M Gao, G von Plessen, J Lemmer, J Feldman, Steven T. Cundiff

Second harmonic generation (SHG) is used to investigate various growth steps in the preparation of layer-by-layer self-assembled films of oppositely charged...

Tight-Binding Method and Multiband Effective Mass Theory Applied to CdS Nanocrystals: Single-Particle Effects and Optical Spectra Fine Structure

October 12, 2021

Author(s)

J G. Diaz-Garcia, J Planelles, Garnett W. Bryant, Javier Aizpurua

Optical spectra of CdS nanocrystals are interpreted by using both the atomistic tight-binding method and multiband effective-mass theory. Both methods correctly...

Active Synchronization and Carrier Phase Locking of Two Separate Mode-Locked Femtosecond Lasers

October 12, 2021

Author(s)

R K. Shelton, L -. Ma, H C. Kapteyn, M M. Murnane, J L. Hall, Jun Ye

Two independent mode-locked femtosecond lasers are synchronized to an unprecedented precision. The rms timing jitter between the lasers is 4.3 fs observed...

Carrier-Pulse Envelope Dynamics in Passively Mode-Locked Ti:Sapphire Lasers

October 12, 2021

Author(s)

K W. Holman, R J. Jones, A Marian, S T. Cundiff, Jun Ye

We have performed systematic studies of intensity-related dynamics of the pulse repetition and carrier-envelope offset frequency in passively mode-locked Ti...

Blackbody Radiation Shift in a ⁴³Ca⁺ Ion Optical Frequency Standard

October 12, 2021

Author(s)

B Arora, M S. Safronova, Charles W. Clark

Motivated by the prospect of an optical frequency standard based on 43Ca+, we calculate the blackbody radiation (BBR) shift of the 4s1/2 - 3d5/2 clock...

Generalized Pseudo-Potentials for Higher Partial Wave Scattering

October 12, 2021

Author(s)

R Stock, A Silberfarb, I H. Deutsch, E L. Bolda

We derive a generalized zero-range pseudo-potential applicable to all partial wave solutions to the Schrodinger equation based on a delta-shell potential in the...

Atomic Transition Probabilities for DyI and DyII

October 12, 2021

Author(s)

M E. Wickliffe, James E. Lawler, Gillian Nave

Atomic transition probabilities for 915 spectral lines of neutral and singly ionized dysprosium are reported. Typical uncertainties are less than +/- 10%...

A Two-Channel R-Matrix Analysis of Magnetic Field Induced Feshbach Resonances

October 12, 2021

Author(s)

N Nygaard, Barry I. Schneider, Paul S. Julienne

A Feshbach resonance arises in cold atom scattering due to the complex interplay between several coupled channels. However, the essential physics of the...

A Field Unit for Spectral Irradiance Responsivity Calibrations

October 12, 2021

Author(s)

E A. Thompson, P Disterhoft, E A. Early

Withdrawn by author - 11/10/97Horizontal standard lamps calibrate the spectral irradiance responsivity of spectroradiometers which measures solar ultraviolet...

Implementation of the Deutsch-Jozsa Algorithm for Three-Qubit Functions With Rovibrational Molecular Wave Packets

October 12, 2021

Author(s)

J Vala, Z Amitay, B Zhang, S R. Leone, R Kosloff

The Deutsch-Jozsa quantum algortihm is demonstrated experimentally for three-qubit functions using pure cotherent superpositions (wave packets) of molecular (Li...

Lessons From Ultraviolet Monitoring Spectroradiometer Intercomparisons

October 12, 2021

Author(s)

E A. Thompson, E A. Early

A series of three interagency solar ultraviolet monitoring spectroradiometer intercomparisons were conducted at Table Mountain outside Boulder, Colorado. The...

Intercomparison of Extrapolation Chamber Measurements of the Absorbed Dose Rate in Tissue for Beta Radiation

October 12, 2021

Author(s)

R Behrens, K Helmstadter, P Ambrosi, J M. Bordy, C Lecante, M Bovi, I Jokelainen, Christopher G. Soares, P R B Saull, A Kharitonov, S Fedina, T Kurosawa, M Kato

The first EUROMET comparison for the standards for absorbed dose rate in 0.07 mm tissue depth for beta radiation of eight national metrology institutes has been...

Manufacture of Extremely Flat 300 mm Silicon Wafers

October 12, 2021

Author(s)

Marc Tricard, Paul Dumas, Christopher Hall, Ulf Griesmann, Quandou (. Wang

The flatness requirement for silicon wafers at the exposure site will be lower than 50 nm by 2010 and may be as low as 25nm by 2015 (TRS 2005). This creates new...

Robust Design of an Evolutionary Algorithm for Machining Optimization Problems

October 12, 2021

Author(s)

Jean-Louis Vigouroux, Laurent Deshayes, Sebti Foufou, James J. Filliben, Lawrence A. Welsch, Alkan Donmez

In this paper, a methodology for the robust design of an evolutionary algorithm is presented. The evolutionary algorithm (EA) is studied with the intention to...

Imidazolium Modified Clay Based ABS Nanocomposites: A Comparison Between Melt-Blending and Solution Sonication Processes

October 12, 2021

Author(s)

M Modesti, S Besco, A Lorenzetti, Mauro Zammarano, V Causin, C Marega, Jeffrey W. Gilman, D M. Fox, Paul C. Trulove, Hugh C. De Long, P H. Maupin

Acrylonitrile-butadiene-styrene (ABS) nanocomposites containing imidazolium-modified montmorillonite have been prepared by melt-blending and solution-sonication...

Optical Probes for Monitoring Intercalation and Exfoliation in Melt Processed Polymer Nanocomposites

October 12, 2021

Author(s)

P H. Maupin, Jeffrey W. Gilman, Richard H. Harris Jr., S Bellayer, Anthony J. Bur, S C. Roth, A B. Morgan, J R. Harris, M Murariu

Laser induced fluorescence spectroscopy of the optical probe Nile Blue A in polymer clay nanocomposites is described. Concentration quenching of fluorescence...

Toxic Potency Values for Smoke from Products and Materials

October 12, 2021

Author(s)

J L. Neviaser, Richard Gann

Many devices have been used to generate data on the toxic potency of smoke from burning products and materials. This paper critically reviews those apparatus...

Experimental and Molecular Dynamic Studies of Thermal Decomposition of a Polyisobutylene Binder

October 12, 2021

Author(s)

C S. Jee, Z X. Guo, S I. Stoliarov, Marc R. Nyden

Polymer debinding is involved in many powder metallurgy processes, where clean removal of the binder is essential to ensure a sound product. This investigation...

Two Sides Ignition Over a Thin PMMA Sheet in Microgravity

October 12, 2021

Author(s)

Y N. Nakamura, Takashi Kashiwagi, S L. Olson, K K. Nishizawa, O -. Fujita

A series of the experiments was conducted in microgravity to study the ignition characteristics of a thin PMMA sheet (thicknesses of 0.2 mm and 0. 4 mm) using a...

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