Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Ernest G. Kessler"'
Autor:
James P. Cline, Lawrence T. Hudson, Mark D. Vaudin, Ernest G. Kessler, Marcus H. Mendenhall, Csilla I. Szabo-Foster, Albert Henins
Publikováno v:
J Res Natl Inst Stand Technol
Precision lattice spacing comparison measurements at the National Institute of Standards and Technology (NIST) provide traceability of X-ray wavelength and powder diffraction standards to the international system of units (SI). Here, we both summariz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::482dfd9ec5d886adea17b18b52f6d46d
https://europepmc.org/articles/PMC7339534/
https://europepmc.org/articles/PMC7339534/
Publikováno v:
Metrologia. 48:201-211
The curvature of a single crystal of Si with a thin epitaxial film of a SiGe alloy has been determined by measuring the spatial variation of lattice-plane orientation across the surface. The technique uses the National Institute of Standards and Tech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::128820e5c4d63ae55c731a45181a1ea1
https://doi.org/10.1088/0026-1394/48/3/015
https://doi.org/10.1088/0026-1394/48/3/015
Autor:
Olaf Rienitz, A. Waseda, Peter Becker, Shigeki Mizushima, Naoki Kuramoto, Kenichi Fujii, Hiroyuki Fujimoto, Ulrich Kuetgens, A. Picard, I. Busch, S. Valkiers, Axel Pramann, Yasushi Azuma, Michael Krumrey, Sabine Zakel, Detlef Schiel, Birk Andreas, Horst Bettin, P Fuchs, Guido Bartl, Arnold Nicolaus, Giovanni Mana, Enrico Massa, Michael Borys, Ernest G. Kessler
Publikováno v:
Metrologia. 48:S1-S13
This paper concerns an international research project aimed at determining the Avogadro constant by counting the atoms in an isotopically enriched silicon crystal. The counting procedure was based on the measurement of the molar volume and the volume
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bfe2185b03b90cd45322286be6a4241
https://doi.org/10.1088/0026-1394/48/2/s01
https://doi.org/10.1088/0026-1394/48/2/s01
Publikováno v:
Metrologia. 48:S44-S49
The Avogadro constant has been determined by atom counting in two enriched 28Si spheres. Atoms were counted by exploiting their ordered arrangement in the spheres and calculating the ratio between sphere and the unit-cell volumes. This paper describe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::916978d824e84444e6052653cd3fe241
https://doi.org/10.1088/0026-1394/48/2/s07
https://doi.org/10.1088/0026-1394/48/2/s07
Autor:
M. Hanke, Ernest G. Kessler
Publikováno v:
Journal of Physics D: Applied Physics. 38:A117-A120
As a part of the International Avogadro Project we have utilized a state-of-the-art lattice comparator at the National Institute of Standards and Technology (NIST) to measure relative lattice parameter differences that are of the order of 10−8. Sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::042e934cf17ee69584bfa3be6ff86646
https://doi.org/10.1088/0022-3727/38/10a/022
https://doi.org/10.1088/0022-3727/38/10a/022
Autor:
L. de Billy, Paul Indelicato, Eva Lindroth, J. Anton, Richard D. Deslattes, Ernest G. Kessler
Publikováno v:
Reviews of Modern Physics. 75:35-99
The authors combine modern theoretical calculations with evaluated selected experimental data to produce a comprehensive data resource of K- and L-x-ray transition and absorption edge energies for all of the elements from neon to fermium. The theoret
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95ec44d17baf1b121515e39312600272
https://doi.org/10.1103/revmodphys.75.35
https://doi.org/10.1103/revmodphys.75.35
Autor:
John Lawall, Ernest G. Kessler
Publikováno v:
Review of Scientific Instruments. 73:209-215
A vibration-isolated platform in a high-vacuum environment designed for prototyping optical interferometers is described. The system provides isolation from both seismic and acoustic disturbances with a residual acceleration of 2.9×10−6 m/s2 rms (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff926b9329614f478c6e97155d75d3c3
https://doi.org/10.1063/1.1416110
https://doi.org/10.1063/1.1416110
Autor:
H Lehmann, Michael Jentschel, Hans G. Börner, Ernest G. Kessler, Maynard S. Dewey, Albert Henins, Richard D. Deslattes
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 457:187-202
A high-resolution flat-crystal gamma-ray facility, GAMS4, has been constructed at the high-flux reactor at the Institut Laue-Langevin (ILL), Grenoble, France. The facility is located at the exit of a through-tube equipped to place sources in a neutro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8dc45ec752a805721b445f3d6813a1b
https://doi.org/10.1016/s0168-9002(00)00753-1
https://doi.org/10.1016/s0168-9002(00)00753-1
Autor:
John Lawall, Ernest G. Kessler
Publikováno v:
Review of Scientific Instruments. 71:2669-2676
We demonstrate a new heterodyne Michelson interferometer design for displacement measurements capable of fringe interpolation accuracy of one part in 36 000. Key to this level of accuracy are the use of two acousto-optic modulators for heterodyne fre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb8b383343266d97261cf4ea50af0867
https://doi.org/10.1063/1.1150715
https://doi.org/10.1063/1.1150715
Autor:
Maynard S. Dewey, Ernest G. Kessler
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
The authors discuss the connection of high-energy gamma-ray measurements with precision atomic mass determinations. These rather different technologies, properly combined, are shown to lead to new values for the neutron mass and the molar Planck cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dfdd3923a0b8ca28b5bdfc95da5c8cf
http://europepmc.org/articles/PMC4878341
http://europepmc.org/articles/PMC4878341