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Journals

Interaction of Some Alkali Metal Citrates with Hydroxyapatite Ion-Exchange Adsorption and Role of Charge Balance

October 1, 1998

Author(s)

D N. Misra

Proper balancing of the concentration of citrate ions in soft drinks is important in order to regulate cariogenic potential of these ions. The uptake, or ion...

Small-Angle Neutron Scattering Studies on the Phase Behavior of Binary Polymer Blends Driven by Photoisomerization

October 1, 1998

Author(s)

O Urakawa, O Yano, Q Tran-Cong, A Nakatani, Charles C. Han

The phase behavior of trans-stilbene-labeled polystyrene and poly [vinyl methyl ether] mixtures was investigated by using small angle neutron scattering. It was...

Ferromagnetic Resonance Studies of NiO-Coupled Thin Films of Ni₈₀Fe₂₀

October 1, 1998

Author(s)

Robert D. McMichael, Mark D. Stiles, P J. Chen, William F. Egelhoff Jr.

This paper describes ferromagnetic resonance (FMR) and magnetoresistive measurements of thin magnetic films coupled to antiferromagnetic films. First, FMR...

Limitations on Distinguishing Between Representations of Relaxation Data Over Narrow Frequency Ranges

October 1, 1998

Author(s)

Chad R. Snyder, F I. Mopsik

In this article, we examine the ability to distinguish between relaxation functions with data over limited range of frequency. It is demonstrated that over...

Initial Results of the Bidirectional Reflectance Characterization Round-Robin in Support of EOS

October 1, 1998

Author(s)

Bettye C. Johnson, P Y. Barnes, Thomas R. O'Brian, James J. Butler, C J. Bruegge, S F. Biggar, P R. Spyak, M M. Pavlov

Laboratory measurements of the bidirecitonal reflectance distribution function (BRDF) of diffusely reflecting samples are required to support calibration in the...

Short-Term Stability Measurements of a Germanium Plotodiode Radiometer

October 1, 1998

Author(s)

G Andor, Bettye C. Johnson

This paper describes a general stability measurement method for the short term stability, or repeatability, for radiometers using fixed-point blackbodies [BBs]...

A 400 nm to 2500 nm Absolute Spectral Radiance Comparison Using Filter Radiometers

October 1, 1998

Author(s)

Howard W. Yoon, Bettye C. Johnson, D Kelch, S F. Biggar, P R. Spyak

An integrating sphere source developed by MTL Systems, Inc. was calibrated for them by a commercial standards laboratory traceable to the National Institute of...

Field Calibration Unit for Ultraviolet Spectroradiometers

October 1, 1998

Author(s)

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

114 Still with reader.

Analytical Modeling of the Periodic Nonlinearity in Heterodyne Interferometry

October 1, 1998

Author(s)

C M. Wu, R Deslattes

The periodic nonlinearity that arises from nonideal laser sources and imperfections of optical components limits the accuracy of displacement measurements in...

Bond-Selective Photofragmentation of Jet-Cooled HOD at 193 nm: Vibriationally Mediated Photochemistry With Zero-Point Excitation

October 1, 1998

Author(s)

David F. Plusquellic, O Votava, David J. Nesbitt

Photofragment yields are reported for supersonically cooled H 2O, D 2O, and HOD via one photon, 193 nm photolysis in a slit jet expansion, with OH and OD...

Evaluation of Uncertainties in Fundamental Radiometric Measurements

October 1, 1998

Author(s)

Benjamin K. Tsai, Bettye C. Johnson

The uncertainty of measurements is critical in furthering the development of radiometric science and acquiring an increased understanding of its principles...

Revised Formulas for Diffraction Effects With Point and Extended Sources

October 1, 1998

Author(s)

Eric L. Shirley

Revised formulas to estimated diffraction effects in radiometry for point and extended sources are derived. They are found to work as well as or better than...

Configurational Temperature: Verification of Monte Carlo Simulations

October 1, 1998

Author(s)

B D. Butler, G Ayton, O G. Jepps, D J. Evans

A diagnostic that is useful for checking the algorithmic correctness of Monte Carlo computer programs is presented. The check is made by comparing the Boltzmann...

InSb Working Standard Radiometers

October 1, 1998

Author(s)

George P. Eppeldauer, Alan L. Migdall, Leonard M. Hanssen

Standard quality InSb radiometers have been developed and characterized at the national Institute of Standards and Technology (NIST). The InSb radiometers will...

A Simple Technique for Observing Fringe Interpolation Errors in Michelson Interferometers

October 1, 1998

Author(s)

Jack A. Stone Jr., Lowell P. Howard

We describe a simple, convenient method for measuring nonlinearities in displacement-measuring Michelson interferometers. Nonlinearities with a spatial...

Ralph Webb: A Pioneering Proselytizer for Enhanced Heat Transfer

October 1, 1998

Author(s)

Mark A. Kedzierski

Ralph Webb, a pioneer in enhanced heat transfer, proselytizes his field for the economic and technical benefit of industry. His mission has been, and always...

Mechanism of Ionic Strength Dependence of Crystal Growth Rates in a Subtilsin Variant

October 1, 1998

Author(s)

David T. Gallagher, Q Pan, G L. Gilliland

An orthorhombic crystal form of subtilisin exhibits a systematic variation in growth rates of its three unique faces, resulting in pronounced morphology...

Detector-Based Luminous Flux Calibration Using Absolute Integrating Sphere Method

October 1, 1998

Author(s)

Yoshihiro Ohno

The Absolute Integrating-sphere Method was developed and introduced by NIST for the realization of luminous flux unit using an integrating sphere rather than a...

New Photometric Calibration Programs at the National Institute of Standards and Technology

October 1, 1998

Author(s)

Yoshihiro Ohno, Magdalena Navarro

The National Institute of Standards and Technology (NIST) candela is maintained via standard photometers which have shown long-term stability better than 0.1%...

Platinum Versus Palladium Thermocouples: an EMF-Temperature Reference Function for the Range 0 degrees {Celsius} to 1500 degrees {Celsius}

October 1, 1998

Author(s)

G W. Burns, Dean C. Ripple, M Battuello

We present an emf-temperature reference function for platinum versus palladium (Pt/Pd) thermocouples in air for the range 0 degrees {Celsius} to 1500 degrees...

Kamlet-Taft Solvatochromic Parameters for 25 Glycol Ether Solvents and Glycol Ether Aqueous Solutions

October 1, 1998

Author(s)

A F. Lagalante, C Wood, A M. Clarke, Thomas J. Bruno

The Kamlet-Taft parameters for 25 glycol ethers and aqueous solutions of the 25 glycol ethers were measured. Values for the three Kamlet-Taft parameters; the...

Solid-Liquid Equilibrium of Dipolar Heteronuclear Hard Dumbbells in a Generalized van der Waals Therory: Application to Methyl Chloride

October 1, 1998

Author(s)

S Gay, P D. Beale, James C. Rainwater

The solid-liquid equilibrium of hard dumbbells with embedded point dipoles is calculated using a generilized van der Waals thery to account for long range...

Standard Test Data for Estimating Peak Parameter Errors in X-Ray Photoelectron Spectroscopy: I. Results for Peak Binding Energies

October 1, 1998

Author(s)

Joseph M. Conny, Cedric J. Powell, Lloyd A. Currie

Standard test data(STD) are simulations of analytical instrument responses that help determine the veracity of computer-based, data analysis procedures that are...

Silicon Wedge-Trap Detector for Optical Fibre Power Measurements

October 1, 1998

Author(s)

John H. Lehman, J. E. Sauvageau, Igor Vayshenker, Christopher L. Cromer, K. Foley

Tensile Testing Low Density Multilayers: Aluminum/Titanium

October 1, 1998

Author(s)

Daniel Josell, D van Heerden, D Shechtman, David T. Read

Yield stresses, ultimate tensile strengths, and specific strengths of aluminum/Titanium multilayer thin films are determined from the results of uniaxial...

A Fast Pulse Oscilloscope Calibration System

October 1, 1998

Author(s)

J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders

A system is described for calibrating high-bandwidth oscilloscopes using pulse signals. The fast pulse oscilloscope calibration system (FPOCS) is to be used to...

A Pulse Measurement Intercomparison

October 1, 1998

Author(s)

T. M. Souders, J R. Andrews, A. Caravone, J. P. Deyst, C. Duff, S. Naboicheck

Time-Base Nonlinearity Determination Using Iterated Sine-Fit Analysis

October 1, 1998

Author(s)

Gerard N. Stenbakken, J. P. Deyst

A new method is presented to determine the time-base errors of sampling instruments. The method does not require a model for the time-base error and, thus...

Gapped Arresters Revisited: A Solution to Cascade Coordination

October 1, 1998

Author(s)

A. Mansoor, Francois D. Martzloff, K. O. Phipps

This paper provides a brief perspective on how the coordination of cascaded surge-protective devices (SPDs) has become an issue. We propose an approach where...

A Pulse Measurement Intercomparison

October 1, 1998

Author(s)

T. M. Souders, J R. Andrews, A. Caravone, J. P. Deyst, C. Duff, S. Naboicheck

A pulse measurement intercomparison, organized by (NIST) and conducted by the authors in their respective labs, is described. The purpose was to assess the...

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