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Displaying 49026 - 49050 of 73697

Alignment and Orientation Effects in Sr Energy Pooling

December 1, 1999
Author(s)
Harold V. Parks, S R. Leone
Alignment and orientation effects in the energy pooling process, Sr(5s5p 3P 1) + Sr(5s5p 3P 1)-> Sr(5s5p 1P 1) + Sr(5s 2 1S o), are studied in a single atomic beam. The Sr atoms are prepared in an aligned initial state with a polarized laser, and alignment

Application of Microcalorimeter EDS X-Ray Detectors to Particle Analysis

December 1, 1999
Author(s)
Alain C. Diebold, David A. Wollman, Gene C. Hilton, Kent D. Irwin, John M. Martinis, B. H. Liu
New microcalorimeter x-ray detector technology will revolutionize materials characterization. It is expected that the microcalorimeter EDS (energy dispersive spectrometer) will replace traditional lithium-drifted silicon semiconductor EDS due to its

Calibrations of Colorimeters for Display Measurements: Some Commercial Colorimeters Have Uncertainties in Display-Color Measurements That Are Too Large for Many Commercial, Industrial and Military Applications - But New NIST-Developed Calibration Proc...

December 1, 1999
Author(s)
Steven W. Brown, Yuqin Zong, Yoshihiro Ohno
Commercial color measuring instruments (colorimeters and spectroradiometers) are currently used in a number of product development and control environments, as well as for product acceptance testing and a variety of other applications. In many cases, the

Combined EXAFS and First-Principles Theory Study of Pb 1-x Ge x Te

December 1, 1999
Author(s)
Bruce D. Ravel, Eric J. Cockayne, E Newville, K M. Rabe
The narrow band-gap semiconductor Pb 1-xGe xTe has a low-temperature ferroelectric rhombohedral phase whose average structure is a distorted rocksalt structure. We have measured the Extended X-Ray-Absorption Fine-Structure (EXAFS) spectra of Pb 1-xGe xTe

Comparative Mechanical Property Characterization of 3 All-Ceramic Core Materials

December 1, 1999
Author(s)
M Y. Wen, H J. Mueller, J Chai, W T. Wozniak
The biaxial flexural strength and fracture toughness for three representative types of ceramic core materials were studied to (1) ascertain the ranking of the 3 ceramic types for strength and toughness, and (2) provide clinicians with more information to
Displaying 49026 - 49050 of 73697
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