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

Displaying records 1 to 10 of 30 records.
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1. 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 + ...

2. A magnetic levitation technique for the simultaneous comparison of mass artifacts in air and vacuum.
Published: 4/1/2009
Authors: Patrick J Abbott, Zeina Jabbour Kubarych, Ruimin Liu, Edwin Ross Williams, Joe Chalfoun
Abstract: We describe a mass comparison system in which a test mass artifact in air can be directly compared to a standard mass artifact in vacuum using the same high precision comparator balance. The system uses a magnetic levitation technique to couple the ...

3. Calibration of dynamic sensors for noncontact-atomic force microscopy
Published: 8/12/2011
Authors: Gordon Allan Shaw, Jon Robert Pratt, Zeina Jabbour Kubarych
Abstract: Access to quantitative information on surface forces in noncontact-atomic force microscopy (NC-AFM) requires the accurate calibration of several key sensor parameters. This work outlines a dynamic method for calibrating the spring constant of tuning ...

4. Constant Pressure and Vacuum Transporter for 1 kg Mass Standards
Series: NIST Interagency/Internal Report (NISTIR)
Published: 9/8/2008
Authors: Vincent J Lee, Zeina Jabbour Kubarych
Abstract: This report describes the design and intended use of a constant pressure and vacuum transporter for transferring 1 kg mass standards between different locations and environments without compromising the atmospheric conditions and therefore maintainin ...

5. Effects of Cleaning on the US Prototype Kilograms
Published: 1/1/2001
Authors: Zeina Jabbour Kubarych, R S Davis
Abstract: This paper dicusses the stability of national prototype kilograms No. 4 and No. 20, belonging to the United States. Calibration history, changes in mass with respect to time, and effects on mass and surface profiles due to cleaning and washing are d ...

6. 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/ ...

7. 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 ...

8. 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 ...

9. Final Report on CIPM Key Comparison of 1 kg Standards in Stainless Steel (CCM.M-K1)
Published: 10/1/2004
Authors: R S Davis, C Aupetit, L O Becerra, W Bich, N Bignell, G D Chapman, J.-H. Chung, J Coarasa, Stuart Davidson, N G Domostroeva, Kitty Fen, M Glaser, W G Lee, M Lecollinet, Q Li, R Spurny, J Verbeek, Zeina Jabbour Kubarych, A Ooiwa, A Torino
Abstract: This report describes a Key Comparison of 1 kg standards in stainless steel undertaken by the Consultative Committee on Mass and Related Quantities (CCM) and piloted by the Bureau International des Poids et Mesures (BIPM). The comparisons were carri ...

10. Final Report on CIPM Key Comparison of Multiples and Submultiples of the Kilogram (CCM.M-K2)
Published: Date unknown
Authors: L O Becerra, W Bich, N Bignell, G D Chapman, J.-H. Chung, Stuart Davidson, M Glaser, A Gosset, Zeina Jabbour Kubarych, W G Lee, A Ooiwa, P Richard, R Spurny, A Torino, J Verbeek, L Q Zhang
Abstract: A key comparison concerning mass determination of five mass standards has been carried out under the auspices of the Comite Consultatif pour a la Mase et les Grandeurs Apparantees (CCM) from March 1998 to March 1999. The nominal values of the mass st ...

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