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Journals

Theory for Ionization of Molecules by Electrons

March 1, 1999

Author(s)

Yong Sik Kim, M E. Rudd

A simple yet effective theory for the total ionization cross sections of molecules by electron impact is described. The theory, called the Binary Encounter

Four-Wave Mixing With Matter Waves

March 1, 1999

Author(s)

Lu Deng, Edward W. Hagley, J Wen, M Trippenbach, Y B. Band, Paul S. Julienne, J E. Simsarian, Kristian Helmerson, S L. Rolston, William D. Phillips

The advent of the laser as an intense, coherent light source gave birth to nonlinear optics, which now plays an important role in many areas of science and

A Well Collimated Quasi-Continuous Atom Laser

March 1, 1999

Author(s)

Edward W. Hagley, Lu Deng, M M. Kozuma, J Wen, Kristian Helmerson, S L. Rolston, William D. Phillips

We demonstrate extraction of sodium atoms from a trapped Bose-Einstein condensate (BEC) using a coherent stimulated Raman process. Optical Raman pulses drive

The Vibrational Spectra of Molecular Ions Isolated in Solid Neon. XV. Infrared Spectroscopic Evidence for NeHF+ and HFFH+

March 1, 1999

Author(s)

C Lugez, Marilyn E. Jacox, Russell D. Johnson III

When a Ne:HF mixture is subjected to Penning ionization and/or photoionization by neon atoms in their first excited states, between 16.6 eV and 16.85 eV, and

Review of Modeling Vapor-Liquid Equilibria - Cubic Equations of State and Their Mixing Rules by H. Orbey and S. Sandler for Cambridge University Press

March 1, 1999

Author(s)

Eric W. Lemmon

This is a book review. No abstract is available.

Photoluminescence Quenching in Si_1-xGe_x/Si Multiple Quantum Wells Grown With Atomic Hydrogen

March 1, 1999

Author(s)

Greg Balchin, Paul M. Amirtharaj, C Silvestre, P E. Thompson

We compare the photoluminescence spectra from a series of Si 1-xGe x/Si (0.1 {1-xGe x/Si MQW samples grown without atomic hydrogen. No quantum confined

Viscosity Measurements of Ammonia, R32, and R134a. Vapor Buoyancy and Radial Acceleration in Capillary Viscometers

March 1, 1999

Author(s)

Arno R. Laesecke, T Luddecke, R F. Hafer, Dylan Morris

The saturated liquid viscosity of ammonia (NH3) and of the gydrofluorocarbons difluoromethane (Ch 2F 2, R32) and 1,1,1,2-tetrafluoroethane (CF 3-CH 2F, R134a)

Ultrafast Glimpses at Water and Ice

March 1, 1999

Author(s)

Edwin J. Heilweil

Recent literature reports of transient infrared hole-burning and spectroscopic measurements on water and ice are critically reviewed. Dynamical measurements on

Estimating the Virial Coefficients of the Ammonia + Water Mixture

March 1, 1999

Author(s)

L A. Weber

A corresponding states type model has been used to estimate the second and third virial coefficients of the NH 3 + H 2O mixture. Additional mixing parameters

Optical Linewidth Models - Then and Now

March 1, 1999

Author(s)

Robert D. Larrabee, Richard M. Silver, M P. Davidson

In the late 1970's Dr. Diana Nyyssonen demonstrated that the National Institute of Standards and Technology (NIST) could optically calibrate photomask linewidth

Summary of ISO/TC 201 Standards: Introduction

March 1, 1999

Author(s)

Cedric J. Powell, R Shimizu

An introduction is given to a planned series of short summaries of international standards developed by Technical Committee 201 on Surface ChemicalAnalysis of

Determination of Heats of Adsorption of Hydrocarbons on a Synthetic Clay by Gas-Solid Chromatography Using a Wall Coated Open Tubular Column Approach

March 1, 1999

Author(s)

Thomas J. Bruno, A Lewandowska, F Tsvetkov, Howard J. Hanley

Heats of adsorption for a series of hydrocarbons on Laponite-RD clay were determined by two gas chromatographic methods.

Ab Initio and MM3 Studies of the Conformational Structures of Naphthalene Trimer: Comparison With Experiment

March 1, 1999

Author(s)

Carlos A. Gonzalez, E C. Lim

An ab initio study of the ground-state conformational geometries of the naphthalene trimer has been made at the MP2/6-31G and MP2/6-31+G//MP2/6-31G levels of

Planar Laser-Induced Fluorescence of CF₂ in O₂/CF₄ and O₂/C₂F₆ Chamber-Cleaning Plasmas: Spatial Uniformity and Comparison to Electrical Measurements

March 1, 1999

Author(s)

Kristen L. Steffens, Mark A. Sobolewski

Planar laser-induced fluorescence (PLIF) measurements were made to determine two-dimensional spatial maps of CF 2 density as an indicator of chemical uniformity

Minimizing Feature Width in Atom-Optically Fabricated Chromium Nanostructures

March 1, 1999

Author(s)

W Anderson, C Bradley, Jabez J. McClelland, Robert Celotta

We present a study of factors that influence the feature width of nanostructures formed by atom-optical direct-write lithography. In this process, chromium

A Phase-Field Model of Solidification With Convection

March 1, 1999

Author(s)

D M. Anderson, Geoffrey B. McFadden, A A. Wheeler

We develop a phase-field model for the solidification of a pure material that includes convection in the liquid phase. The model permits the interface to have

Dielectric and Ultrasonic Anomalies at 16, 37, and 65 K in SrTiO₃

March 1, 1999

Author(s)

C Ang, J F. Scott, Z Yu, H M. Ledbetter, J L. Baptista

In this paper we report coincident anomalies in both dielectric response and sound velocities in strontium titanate around three temperatures 16.37 and 65 K

Precision Neutron Interferometric Search for Evidence of Nuclear Quantum Entanglement in Liquid H₂O-D₂O Mixtures

March 1, 1999

Author(s)

A I. Ioffe, Muhammad D. Arif, David L. Jacobson, F Mezei

A wavelength λ independent neutron interferometry (NI) technique has been applied to measure the scattering length densities Nb of liquid mixtures of H 2O-D 2O

State-to-State Reaction Dynamics in Crossed Supersonic Jets: Threshold Evidence for Non-Adiabatic Channels in F + H₂

March 1, 1999

Author(s)

S A. Nizkorodov, W W. Harper, David Nesbitt

The reaction of F + n-H6d2^ to form HF(υ,J) + H is studied in a crossed jet apparatus under single collision conditions, using high-resolution direct absorption

External Radiative Quantum Efficiency of 96 % from a GaAs/GaInP Heterostructure

March 1, 1999

Author(s)

H G. Gauck, T H. Gforerer, M J. Renn, Eric A. Cornell, Kristine A. Bertness

GaAs/GaInP double heterostructures are index matched with ZnSe hemispheres to increase the coupling of photoluminescence out of the device. We measure external

Incorporation of Non-Steady-State Unimolecular and Chemically Activated Kinetics Into Complex Kinetic Schemes. I. Isothermal Kinetics and Constant Pressure

March 1, 1999

Author(s)

Vadim D. Knyazev, Wing Tsang

A general method of accounting for non-steady-state unimolecular kinetics of reactive species in complex kinetic schemes is described. The method is based on

A Natural Orbital Diagnostic for Multiconfigurational Character in Correlated Wavefunctions

March 1, 1999

Author(s)

M S. Gordon, M W. Schmidt, G M. Chaban, W J. Stevens, Carlos A. Gonzalez

The natural orbitals and their corresponding occupation numbers are constructed for several interesting problems to demonstrate that the existence of negative

Nanometre-scale Oxidation of Silicon Surfaces by Dynamic Force Microscopy: Reproducibility, Kinetics and Nanofabrication

March 1, 1999

Author(s)

M Calleja, J Anguita, R Garcia, K Birkelund, F Perez-murano, John A. Dagata

Local oxidation of silicon surfaces by scanning probe microscopy is a very promising lithographic approach at nanometre scale. Here, we present two approaches

Detector Strategy for the Scanning Electron Microscope Inspection and Metrology of Semiconductor Wafers

March 1, 1999

Author(s)

O C. Wells, Michael T. Postek

Photoluminescence Quenching in Si1-xGex/Si Multiple Quantum Wells Grown with Atomic Hydrogen

March 1, 1999

Author(s)

Greg Balchin, Paul M. Amirtharaj, C. Silvestre, P Thompson

Methods for Determination of Response Times of Magnetic Head Materials

March 1, 1999

Author(s)

Thomas J. Silva, T. M. Crawford

Measurements of magnetization response times in thin-film Permalloy are made by both electrical and optical methods.

Subatmospheric Vapor Pressures for Fluoromethane (R41), 1,1-Difluoroethane (R152a), and 1,1,1-Trifluoroethane (R143a) Evaluated from Internal-Energy

March 1, 1999

Author(s)

H Duarte, Joe W. Magee

Vapor pressures were evaluated from measured internal-energy changes AU(2) in the vapor + liquid two-phase region.

Relationships Between Electron Inelastic Mean Free Paths, Effective Attenuation Lengths, and Mean Escape Depths

March 1, 1999

Author(s)

Aleksander Jablonski, Cedric J. Powell

The terms inelastic mean free path (IMFP), effective attenuation length (EAL), and mean escape depth (MED) are frequently used to specify the surface

Monitoring the Destruction of Carbon Phases in Soils and Sediments for Sequential Chemical Extractions

March 1, 1999

Author(s)

M K. Schultz, S R. Biegalski, K G. Inn, Lee L. Yu, W. C. Burnett, J. L. Thomas , G. E. Smith

Generic Centerline Velocity Decay Curve for Initially Turbulent Axisymmetric Jets

March 1, 1999

Author(s)

G Papadopoulos, William M. Pitts

Recently the authors introduced a length scale which effectively collapsed the near field centerline development of velocity and mass fraction for variable

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