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Displaying 47451 - 47475 of 74175

Ground State Scattering Lengths for Potassium Isotopes Determined by Double-Resonance Photoassociative Spectroscopy of Ultracold 39 K

November 1, 2000

Author(s)

Haonan Wang, A N. Nikolov, J R. Ensher, P L. Gould, E E. Eyler, W C. Stwalley, J P. Burke, J L. Bohn, C H. Greene, Eite Tiesinga, Carl J. Williams, Paul S. Julienne

We use double-resonance photoassociative spectroscopy of ultracold 39K atoms to precisely determine the triplet a 3Σ scattering length for the various isotopes of potassium. Photoassociation of free 39K atoms to the pure long-range 0 (v' = O, J' = 2) level

Heat Capacity of NaNO 3 (aq) in Stable and Supercooled States. Ion Association in the Supercooled Solution.

November 1, 2000

Author(s)

R W. Carter, Donald G. Archer

The heat capacity of NaNO 3(aq) from 0.1 to 10 mol.kg -1 was measured from 285 to 236 K, or lower temperatures, at 0.1 Mpa, with a differential scanning calorimeter (DSC). A cooling scan method permitted supercooling of the aqueous solutions well below

High Precision Experimental Tests of the Symmetrization Postulate for Fermions

November 1, 2000

Author(s)

John D. Gillaspy

High Temperature Materials for Thin-Film Thermocouples on Silicon Wafers

November 1, 2000

Author(s)

Kenneth G. Kreider, John G. Gillen

We Have developed an instrumented calibration wafer for radiometric temperature measurements in rapid thermal processing (RPT) tools for semiconductor processing. The instrumented wafers have sputter deposited thin-film thermocouples to minimize the

Impact of XPS on Practical Industrial Problems and Needs for the Future

November 1, 2000

Author(s)

Cedric J. Powell

A summary is given of a panel discussion on the impact of x-ray photoelectron spectroscopy on practical industrial problems and needs for the future. This summary will be included in a report of the Workshop on X-Ray Photoelectron Spectroscopy: From

Improved Real-Scale Fire Measurements Having Meaningful Uncertainty Limits (NISTIR 6588)

November 1, 2000

Author(s)

William M. Pitts, George W. Mulholland

The National Institute of Standards and Technology has undertaken a long-term effort designed to improve our ability to make experimental measurements having quantiftable uncertainties in real-scale fire environments. The adopted approach has two

Improving the Uncertainty Analysis of NIST's Pulse Parameter Measurement Service

November 1, 2000

Author(s)

Nicholas Paulter, Donald R. Larson

A new uncertainty analysis is being performed for NIST's pulse parameter measurement service that represents the new pulse parameter measurement and extraction process. This new analysis is also expected to have lower uncertainties compared to those

Information Model for Machine Tool Performance Tests

November 1, 2000

Author(s)

Yung-Tsun T. Lee, M A. Donmez, Johannes A. Soons

This report specifies an information model of machine tool performance evaluation tests. The information model provides a mechanism capable of describing the properties and results of machine tool performance tests. The objective of the information model

Information Modeling on Conceptual Design Integrated with Process Planning

November 1, 2000

Author(s)

Ram D. Sriram, Mike Pratt, Shaw C. Feng, Eugene Song

Information modeling is critical to the integration of conceptual design and process planning. An information model for conceptual design is provided in this paper. Conceptual design is a key activity in early product development. It determines product

International Comparison, Final Summary Report

November 1, 2000

Author(s)

James P. Randa

An international comparison of noise temperature of coaxial (GPC-7) sources at 2 GHz, 4 GHz and 12 GHz has been completed. Participating laboratories included the Physikalisch-Technische Bundesanstalt (PTB); the Bureau National de Metrologie-Laboratoire

Internet Commerce for Manufacturing Data Staging

November 1, 2000

Author(s)

Curtis H. Parks, Jim G. Nell

This paper describes the process-flow model as proposed for use in the Internet Commerce for manufacturing (ICM), a project of the National Advanced Manufacturing Test Bed program. This model will be used to identify those internet-facilitated transactions

Introduction to ISO 10303 - The STEP Standard for Product Data Exchange

November 1, 2000

Author(s)

Mike Pratt

Since 1984 the International Organization for Standardization (ISO) has been working on the development of a comprehensive standard for the electronic exchange of product data between computer-based product life-cycle systems. Initial concentration has

Introduction to: Proceedings of ILAC 2000 Technical Conference for Laboratory Professionals

November 1, 2000

Author(s)

Belinda L. Collins

The biennial meeting of the International Laboratory Accreditation Cooperation, the ILAC 2000 Technical Conference, in Washington, DC, is co-hosted by NIST and various public and private sector organizations. The Proceedings include speakers' papers and

Investigation of Extinguishment by Thermal Agents Using Detailed Chemical Kinetic Modeling of Opposed Jet Diffusion Flames (NISTIR 6588)

November 1, 2000

Author(s)

William M. Pitts, L G. Blevins

Thermal fire-fighting agents are being investigated as potential replacements for halons which can no longer be manufactured due to their deleterious effects on stratospheric ozone. This work describes a detailed chemical kinetic modeling study of methane

Ion Fluxes and Energies in Inductively Coupled Radio-Frequency Discharges Containing C 2 F 6 and c-C 4 F 8

November 1, 2000

Author(s)

Yicheng Wang, Martin Misakian, Amanda N. Goyettes, James K. Olthoff

We report ion energy distributions (IEDs), relative ion intensities, and absolute total ion current densities at the grounded electrode of an inductively coupled Gaseous Electronics Conference radio-frequency (rf) reference cell for discharges generated in

Ion fluxes and Energies in Inductively Coupled Radio-Frequency Discharges Containing C2F6 and c-C4F8

November 1, 2000

Author(s)

Amanda N. Goyettes, Yicheng Wang, Martin Misakian, James K. Olthoff

Measurements of ion energy distributions relative ion intensities, and absolute total ion current densities were made at the grounded electrode of an inductively coupled Gaseous Electronics Conference (GEC) radio-frequency reference cell for discharges

Ionic Fluids Near Critical Points and at High Temperatures

November 1, 2000

Author(s)

Johanna M.H. Levelt-Sengers, Allan H. Harvey, S. Wiegand

Isochoric Heat Capacity Measurements for 2,2-Dichloro-1,1,1-Trifluoroethane (R123) at Temperatures from 167 to 341 K and 1-Chloro-1,2,2,2-Tetrafluoroethane (R124) from 94 to 341 K at Pressures to 35 MPa

November 1, 2000

Author(s)

Joe W. Magee

Isochoric P-r-T Measurements for 2,2-Dichloro-1,1,1-Trifluoroethane (R123) at Temperatures from 176 to 380 K and 1-Chloro-1,2,2,2-Tetrafluorethane (R124) from 104 to 400 K at Pressures to 35 Mpa

November 1, 2000

Author(s)

Joe W. Magee

The p-p-T relationships were measured for 2,2-dichloro-1,1,1-trifluoroethane (R123) and 1-chloro-1,2,2,2-tetrafluoroethane (R124) by an isochoric method with gravimetric determinations of the amount of substance. Temperatures ranged from 176 to 380 K for

Kinetic Isotope Effect Studies of the Reaction Catalyzed by Uracil DNA Glycosylase: Evidence for an Oxocarbenium Ion-Uracil Anion Intermediate

November 1, 2000

Author(s)

R M. Werner, J T. Stivers

The DNA repair enzyme uracil DNA glycosylase catalyzes the first step in the uracil base excision repair pathway, the hydrolytic cleavage of the N-glycosidic bond of deoxyuridine in DNA. Here we report kinetic isotope effect (KIE) measurements that have

Laser-Induced Fluorescence Study of Two Weak Vibrational Bands of the O + 2 A 2 Pi u - X 2 Pi g System

November 1, 2000

Author(s)

J Li, V M. Bierbaum, S R. Leone

Two weak vibrationa bands, the (8,0) and (8,1) bands of the O 2 + A 2II u - X 2II g System, are Characterized by Laser-Induced Fluorescence (LIF) for the First Time. Preliminary LIF Determinations on the O 2 + (v=0, 1) distributions from the reactions of

Lateral SiO x Tunnel Barrier Formation for Si-Based Tunnel Transistor Using Scanned Probe Oxidation

November 1, 2000

Author(s)

K Morimoto, K Morita, K Ohnaka, John A. Dagata

Tunneling transistors designed with a lateral tunnel barrier between source and drain electrodes have attracted much attention recently as an approach to silicon-compatible nanoelectronics (1). In order to realize this device, the lateral tunneling barrier

Lateral SiOx Tunnel Barrier Formation for Si-based Tunnel Transistor Using Scanned Probe Oxidation

November 1, 2000

Author(s)

K Morimoto, L Morita, K Ohnaka, John A. Dagata

Tunneling transistors designed with a lateral tunnel barrier between source and drain electrodes have attracted much attention recently as an approach to silicon-compatible nanoelectronics. In order to realize this device, the lateral tunneling barrier

LINDENS: A program for lineament length and density analysis

November 1, 2000

Author(s)

Antonio M. Casas, Angel Cortes, Adolfo Maestro, M. Asuncion Soriano, Andres Riaguas, Javier Bernal

Analysis of lineaments from satellite images normally includes the determination of their orientation and density. The spatial variation in the orientation and/or number of lineaments must be obtained by means of a network of cells, the lineaments included

Linewidth Intercomparison on a Polysilicon Sample

November 1, 2000

Author(s)

John S. Villarrubia, Andras Vladar, Michael T. Postek, Ronald G. Dixson

Not available.

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