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You searched on: Author: zeina kubarych Sorted by: title

Displaying records 21 to 30.
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21. Pitch Standards via Laser-Focused Deposition
Published: 1/1/1994
Authors: R Gupta, Zeina Jabbour Kubarych, Jabez J McClelland, Robert Celotta

22. Predissociation of NaK molecules by optical-optical double resonance spectroscopy
Published: 1/1/1997
Author: Zeina Jabbour Kubarych

23. Small mass measurements for tuning fork-based force microscope cantilever spring constant calibration
Published: 6/7/2010
Authors: Gordon Allan Shaw, Jon Robert Pratt, Zeina Jabbour Kubarych
Abstract: Cutting edge mass sensors are capable of discriminating mass changes as small as several dozens of atoms, however the smallest mass commercially available from NIST with a calibration traceable to the International System of Units (SI) is 0.5 mg. To ...

24. Status of Mass Metrology at NIST in 2000
Published: 1/1/2000
Author: Zeina Jabbour Kubarych
Abstract: This paper summarizes the activities in mass metrology at NIST. It includes a description of the facilities and the procedures used in the dissemination of the mass unit. This paper also discusses the research efforts to understand and characterize ...

25. The Kilogram and Measurements of Mass and Force
Published: 1/1/2001
Authors: Zeina Jabbour Kubarych, Simone L Yaniv
Abstract: This paper describes the facilities, measurement capabilities, and ongoing research activities in the areas of Mass and Force at the National Institute of Standards and Technology (NIST). The first section of the paper is devoted to mass metrology a ...

26. The Kilogram: Last remaining artifact
Published: 4/1/1999
Author: Zeina Jabbour Kubarych
Abstract: The unit of mass, the kilogram, is the last remaining basic unit defined by an artifact. Worldwide efforts are underway to replace the artifact-based definition with invariant alternatives. This paper describes briefly the history of the kilogram, th ...

27. The dissemination of mass in the United States: Results and implications of recent BIPM calibrations of US National Prototype Kilograms
Series: Journal of Research (NIST JRES)
Report Number: 119.001
Published: 3/12/2014
Authors: Zeina Jabbour Kubarych, Patrick J Abbott
Abstract: The National Institute of Standards and Technology (NIST) is responsible for the dissemination of the unit of mass within the United States of America through the national prototype kilogram K20 and its check standard K4. These platinum-iridium ...

28. The new kilogram definition and its implications for high-precision mass tolerance classes
Series: Journal of Research (NIST JRES)
Report Number: 118.016
Published: 8/26/2013
Author: Zeina Jabbour Kubarych
Abstract: The SI unit of mass, the kilogram, is the only remaining artifact definition in the seven fundamental quantities of the SI system. It will be redefined in terms of the Planck constant as soon as certain experimental conditions recommended by the ...

29. Thermalization of velocity-selected excited-state populations by resonance exchange collisions and radiation trapping
Published: 6/1/1995
Authors: J Huennekens, A Allegrini, Zeina Jabbour Kubarych, R Sagle, R K Namiotka
Abstract: Populations of excited atoms that all have the same z component of velocity can be produced by pumping a vapor with a narrow-band laser. This velocity-selected population is then thermalized by velocity-changing collisions. However, in a pure vapor ...

30. Vacuum technology considerations for mass metrology
Published: 7/1/2011
Authors: Patrick J Abbott, Zeina Jabbour Kubarych
Abstract: Vacuum weighing of mass artifacts eliminates the necessity of air buoyancy correction and its contribution to the measurement uncertainty. Vacuum weighing is also an important process in the experiments currently underway for the redefinition of th ...

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