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Displaying 49451 - 49475 of 73994

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.

S and Si Ion-Implantation in GaSb Grown on GaAs

December 1, 1999
Author(s)
M V. Rao, A K. Berry, T Q. Do, M C. Ridgway, P Chi, J Waterman
Single and multiple energy S and Si ion-implantations were performed at room temperature (RT) and at 200 C into GaSb epitaxial layers grown on semi-insulating GaAs substrates. The implanted material was annealed with a Si 3N 4 cap at 400-600 C for 5 min

Scotch Pine Christmas Tree Fire Tests. REPORT OF TEST FR 4010

December 1, 1999
Author(s)
D W. Stroup, Laurean A. DeLauter, Jack C. Lee, G Roadarmel
A series of fire tests were conducted to characterize the potential hazard from ignition of Scotch Pine Christmas trees. Heat release rate was measured as a function of time from ignition using a large calorimeter. In addition, radiative flux and total
Displaying 49451 - 49475 of 73994
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