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Journals

Transition Probability Ratios for Selected Multiplets of CI, NI and OI, and Comparisons With Recent Calculations

April 1, 2000

Author(s)

J Musielok, John M. Bridges, Jeffrey R. Fuhr, Wolfgang L. Wiese

With a wall-stabilized high-current arc, we have measured the transition probabilities of several multiplet pairs of CI, NI and OI. Pairs have been selected for...

Spectroscopy of Autoionizing Doubly-Excited States in Ultracold Na₂ Molecules Produced by Photoassociation

April 1, 2000

Author(s)

A Amelink, Kevin Jones, Paul D. Lett, P Van der Straten, H G. Heideman

We have performed photoassociation spectroscopy to study the doubly-excited states of Na 2 involved in the associative ionization of colliding Na(3P) atoms...

Dynamic Structure Factor of Diamond and LiF Measured Using Inelastic X-Ray Scattering

April 1, 2000

Author(s)

W A. Caliebe, J A. Soininen, Eric L. Shirley, C C. Kao, K Hamalainen

The dynamic structure factors S(q,ω) of diamond and LiF have been measured using inelastic x-ray scattering. The experimental data are compared to results of ab...

Evaporative Cooling of a Two-Component Degenerate Fermi Gas

April 1, 2000

Author(s)

M J. Holland, B. L. DeMarco, Deborah S. Jin

We derive a quantum theory of evaporative cooling for a degenerate Fermi gas with two constituents and show that the optimum cooling trajectory is influenced...

Ion-Enhanced Etching of Si(100) With Molecular Chlorine: Neutral and Ionic Product Yields as a Function of Ion Kinetic Energy and Molecular Chlorine Flux

April 1, 2000

Author(s)

N Materer, R S. Goodman, S R. Leone

Time-of-flight mass spectrometry (TOFMS) is used to measure neutral and ionic silicon etch products evolved during argon ion-enhanced etching of room...

Intercomparison of Visual Diffuse Transmission Density Measurements

April 1, 2000

Author(s)

Egbert Buhr, Detleff Bergmann, E A. Early, Thomas R. O'Brian

An intercomparison of visual diffuse transmission density measurements of photographic and x-ray film step tablets was completed bytwo national metrology...

An Ab Initio Study of the Kinetics of the Reactions of Halomethanes With the Hydroxyl Radical. 1. CH₂Br₂

April 1, 2000

Author(s)

F Louis, Carlos A. Gonzalez, Robert E. Huie, Michael J. Kurylo III

Ab initio calculations using the M ller-Plesset perturbation theory were carried out on the H-atom abstraction reaction from dibromomethane by hydroxyl radical...

Calculating Characteristics of Non-collinear Phase-Matching in Uniaxial and Biaxial Crystals

April 1, 2000

Author(s)

N Boeuf, D A. Branning, I Chaperot, E Dauler, S Guerin, G Jaeger, Andreas Muller, Alan L. Migdall

A method of calculating the characteristics of phase-matching in both uniaxial and biaxial crystals is presented. Although significant work has been done to...

Spectral Transmittance of Lossy Printed Resonant-Grid Terahertz Bandpass Filters

April 1, 2000

Author(s)

M. E. MacDonald, A. Alexanian, R. A. York, Zoya Popovic, Erich N. Grossman

A Damper Control System for Preventing Reverse Airflow Through the Exhaust Damper of Variable-Air-Volume Air-Handling Units

April 1, 2000

Author(s)

J E. Seem, J House, George E. Kelly, C J. Klaassen

Traditional air-handling unit (AHU) control systems link the position of the exhaust, recirculation and outdoor air dampers. Laboratory tests of a variable-air...

Retrofit of Pre-Northridge Moment-Resisting Connections

April 1, 2000

Author(s)

S A. Civjan, M D. Engelhardt, John L. Gross

An experimental program was undertaken to evaluate methods to retrofit existing steel moment connections for improved seismic performance. Six full-scale...

Simulation of Fluid Flow and Permeability in Cohesionless Soils

April 1, 2000

Author(s)

E Masad, B Muhunthan, Nicos Martys

This paper reports on a new laboratory methodology for the determination of the structure of pores, a method for the analysis of the data to obtain the...

Mapping Polymer Heterogeneity Using Atomic Force Microscopy Phase Imaging and Nanoscale Indentation

April 1, 2000

Author(s)

D T. Raghavan, Xiaohong Gu, Tinh Nguyen, Mark R. VanLandingham, Alamgir Karim

Polymer coatings contain degradation-susceptible regions, and corrosion of metallic substrate can occur directly underneath these regions. In this paper, the...

Impedance Spectra of Fiber-Reinforced Cement-Based Composites: A Modeling Approach

April 1, 2000

Author(s)

J M. Torrents, T Mason, Edward Garboczi

The impedance response of conductive fiber-reinforced cement-based materials was investigated using model systems (physical simulations) consisting of...

Coherent Control of Precessional Dynamics in Thin Film Permalloy

April 1, 2000

Author(s)

T. M. Crawford, Pavel Kabos, Thomas J. Silva

We demonstrate a method of eliminating overshoot and ringing in magnetizaiton dynamics when the system bandwidth includes the intrinsic ferromagnetic resonance...

The Sensitivity of a Method to Predict a Capacitor's Frequency Characteristic

April 1, 2000

Author(s)

S. Avramov, Andrew D. Koffman, Nile M. Oldham, Bryan C. Waltrip

A joint effort between the U.S. Naval Academy and the National Institute of Standard and Technology (NIST) resulted in the development of a method to...

Uncertainty Analysis for Four Terminal-Pair Capacitance and Dissipation Factor Characterization at 1 MHz and 10 MHz

April 1, 2000

Author(s)

Andrew D. Koffman, S. Avramov, Bryan C. Waltrip, Nile M. Oldham

Calculation of Ion Energy Distributions from Radio Frequency Plasmas Using a Simplified Kinetic Approach

April 1, 2000

Author(s)

Martin Misakian, Yicheng Wang

Using an elementary kinetic approach, a procedure is described for calculating ion energy distributions (IEDs) from radio frequency (rf) plasmas. The calculated...

Electrical Conduction and Dielectric Breakdown in Aluminum Oxide Insulators on Silicon

March 23, 2000

Author(s)

J Kolodzey, E A. Chowdhury, T Adam, G Qui, I Rau, J Olowolafe, John S. Suehle, Y Chen

Leakage currents and dielectric breakdown were studied in MIS capacitors of metal - aluminum oxide - silicon. The aluminum oxide was produced by thermally...

Thermodynamics of the Lipase Catalyzed Transesterifation of (-)-Menthol and Dodecyl Dodecanoate in Organic Solvents

March 20, 2000

Author(s)

Yadu D. Tewari

The thermodynamics of the lipase-catalyzed transesterification reaction (-)-menthol(sin) + dodecyl dodecanoate(sin) = (-)-menthyl dodecanoate(sin) + 1-dodecanol...

Electronic Structure of BC1 Determined by ab Initio Calculations and Resonance-Enhanced Multiphoton Ionization Spectroscopy

March 14, 2000

Author(s)

Karl K. Irikura, Russell D. Johnson III, Jeffrey W. Hudgens

The mass-resolved, one-color, 2 + 1 resonance-enhanced multiphoton ionization spectrum of transient boron monochloride (BC1) between 348 nm and 369 nm is...

A Research Program to Determine When and How to Include Sublethal Effects of Smoke in Fire Safety Decisions

March 7, 2000

Author(s)

Richard G. Gann

It has long been realized that the sublethal effects of smoke can affect survival in fires, but only sparse data were available on which to base fire safety...

Estimation of Absorbed Photolytic Dosage and Quantum Yields Using UV-Vis and FTIR spectroscopies

March 1, 2000

Author(s)

Jonathan W. Martin, Tinh Nguyen, E Byrd, N Embree

An effective dosage model has been introduced for predicting the service life of polymeric materials exposed to UV light. The effective dosage model, which...

Separation of Different Physical Forms of Plasmid DNA Using a Combination of Low Electric Field Strength and Flow in Porous Media: Effect of Different Field Gradients and Porosity of the Media

March 1, 2000

Author(s)

Kenneth D. Cole, C M. Tellez-Rodriguez, R W. Blakesley

The retention of different physical forms of DNA by an electric field in a chromatography system was studied. We were able to effectively separate the...

Comparison of generalized born and Poisson models: Energetics and dynamics of HIV protease

March 1, 2000

Author(s)

Lindra David, R Luo, M K. Gilson

Micromachined 28 GHz Power Divider in CMOS Technology

March 1, 2000

Author(s)

Mehmet Ozgur, Michael Gaitan, Mona E. Zaghloul

Excited States at Surfaces: Fano Profiles in STM Spectroscopy of Adsorbates

March 1, 2000

Author(s)

John William Gadzuk, M Plihal

The Fano-Anderson model for a discrete state embedded within a continuum is revisited within the context of excitation and decay processes which lead to some...

Monolithic Folded Resonator for Evanescent Wave Cavity Ringdown Spectroscopy

March 1, 2000

Author(s)

A C. Pipino

An optical resonator is characterized that employs both ultra-high-reflective coated surfaces and total-internal reflection to enable cavity ring-down...

Software Standards Development - Wherever - However - The Bugs are Free

March 1, 2000

Author(s)

Michael D. Hogan

The perceived tradeoff between the speed of development and the technical soundness of the resulting standards may not be relevant to the development of complex...

Variable Waveform Excitation of Ceramic-Element Transducers for ASTM E127-Type Reference Block Calibration

March 1, 2000

Author(s)

John A. Slotwinski, C R. Snydor, Ana Lopez-Sanchez

Nominally identical ceramic-element ultrasonic transducers have been used successfully to calibrate ASTM E127-type flat-bottom-hole (FBH) aluminum reference...

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