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Author: zeina kubarych

Displaying records 11 to 20 of 27 records.
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11. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821882

12. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820126

13. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820097

14. Experimental Study of the NaK (3 1PI) State
Published: 2/1/1999
Authors: E Laub, J Huennekens, R K Namiotka, Zeina Jabbour Kubarych, I Prodan, J La civita, S Webb, I Mazsa
Abstract: We report the results of an optical-optical double resonance experiment to determine the NaK (3 1PI) state potential energy curve. In the first step, a narrow band cw laser (PUMP) is tuned to line center of a particular 2(A) (1 SIGMA+)(v?, J?) <-- 1 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820098

15. A Study of the predissociation of NaK molecules in the (6 1sigma+) state by optical-optical double resonance spectroscopy
Published: 7/6/1997
Authors: Zeina Jabbour Kubarych, J Huennekens
Abstract: Predissociation of a high-lying /sup 1/ Sigma /sup +/ state of NaK is studied using the optical-optical double resonance technique. A single-mode ring dye laser is set to a particular 2(A)/sup 1/ Sigma /sup +/( nu ', J') from 1(X)/sup 1/ Sigma /sup + ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820007

16. Experimental Study of Caesium 6PJ+ 6PJ -->7PJ? + 6S energy pooling collisions and modeling of the excited atom density in the presence of optical pumping and radiation trapping
Published: 7/5/1997
Authors: F d Tomasi, J Huennekens, Zeina Jabbour Kubarych, A Allegrini, A Fioretti, P Verker, S Milosevic
Abstract: An experimental study of caesium energy pooling collisions at thermal energies, has been carried out in a capillary cell using diode laser excitation. Use of the capillary cell minimizes the effects of radiation trapping, but nonetheless, such effect ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820006

17. Mass Metrology at NIST
Published: 4/23/1997
Author: Zeina Jabbour Kubarych
Abstract: The mission of the mass group of the Automated Production Technology Division at NIST is to maintain the mass unit, disseminate it to U.S. industry, government, and academia, and provide traceability to the International Prototype Kilogram. Efforts ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820005

18. Predissociation of NaK molecules by optical-optical double resonance spectroscopy
Published: 1/1/1997
Author: Zeina Jabbour Kubarych
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820099

19. Energy-pooling collisions in cesium: 6P/sub J/+6P/sub J/ to 6S+(nl=7P,6D,8S,4F)
Published: 1/1/1996
Authors: Zeina Jabbour Kubarych, S Milosevic, A Allegrini, J Huennekens, R K Namiotka
Abstract: We report experimental rate coefficients for the energy-pooling collisions Cs(6P/sub 1/2/)+Cs(6P/sub 1/2/) to Cs(6S/sub 1/2/)+Cs(nl/sub J''/) and Cs(6P/sub 3/2/)+Cs(6P/sub 3/2/) to Cs(6S/sub 1/2/)+Cs(nl/sub J''/) where nl/sub J''/=7P/ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820051

20. Laser Focusing of Atoms for Nanostructure Fabrication
Published: 1/1/1996
Authors: Jabez J McClelland, R Gupta, Zeina Jabbour Kubarych, Robert Celotta
Abstract: Laser-focusing of atoms has emerged as a viable form of nanofabrication. Structures are formed by focusing chromium atoms as they deposit onto a surface. The focusing occurs in a standing-wave laser field in one or two dimensions, resulting in arrays ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620463