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Displaying 49151 - 49175 of 73697

Nose-to-Nose Response of a 20-GHz Sampling Circuit

December 1, 1999
Author(s)
Dylan F. Williams, Catherine A. Remley, Donald C. DeGroot
We use SPICE simulations to determine a response function of a two-diode 20-GHz sampling circuit. We explore the validity of the SPICE simulations in a variety of operational conditions and examine differences between the actual response of an impedance

On-Wafer Measurements of Noise Temperature

December 1, 1999
Author(s)
James P. Randa, Robert L. Billinger
The NIST Noise Project has developed the theoretical formalism and experimental methods for performing accurate noise-temperature measurements on wafer. This report summarizes the theoretical formulation and describes the design, methods, and results of

Performance Verification of Impact Machines for Testing Plastics

December 1, 1999
Author(s)
Thomas A. Siewert, D P. Vigliotti, L B. Dirling, Christopher N. McCowan
Valid comparison of impact test energies reported by various organizations and over time depends on consistent performance of impact test machines. This paper investigates the influence of various specimen and test parameters on impact energies in the I J

Phase Control of Wavepacket Dynamics Using Shaped Femtosecond

December 1, 1999
Author(s)
R Uberna, Z Amitay, R A. Loomis, S R. Leone
Coherent vibrational and rotational dynamics of the Li 2 molecule is controlled by varying the relative phases diameter} n, of the rovibrational wavepacket components, ln>3 -i(ωnt+φn). The coherent superposition is created by excitation of a set of ten

Powder Metallurgy High Nitrogen Stainless Steel

December 1, 1999
Author(s)
Frank S. Biancaniello, Rodney D. Jiggetts, Richard E. Ricker, Stephen D. Ridder
High Nitrogen Stainless Steels (HNSS) are a class of materials that possess a unique combination of outstanding strength, ductility, and corrosion properties. In this paper we report on the advantages of producing these materials via inert gas atomization

Precision Spectroscopy in He as a Test of QED

December 1, 1999
Author(s)
S Bergeson, A Balakrishnan, K G. Baldwin, Thomas B. Lucatorto, J P. Marangos, T J. McIlrath, Thomas R. O'Brian, S L. Rolston, Craig J. Sansonetti, J Wen, N Westbrook, C H. Cheng, E E. Eyler
High resolution laser-based measurements of energy levels have spurred the development and refinement of quantum electrodynamic calculations. We have extended very high resolution laser spectroscopy techniques into the vacuum ultraviolet wavelength region

Process Representation Using Architectural Forms: Accentuating the Positive

December 1, 1999
Author(s)
Joshua Lubell, Craig I. Schlenoff
The PSL (Process Specification Language) project is creating a standard language for process specification to serve as an interlingua to integrate multiple process-related applications throughout the manufacturing life cycle. This interchange language is

Refractivity of Nitrogen Gas in the Vacuum Ultraviolet

December 1, 1999
Author(s)
Ulf Griesmann, John H. Burnett
We have measured the refractivity of nitrogen gas in the ultraviolet and vacuum ultraviolet using a Fourier transform spectrometer. A new two-term Sellmeier formula for the standard refractivity between 145 nm and 270 nm is derived.
Displaying 49151 - 49175 of 73697
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