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NIST Authors in Bold

Displaying 3026 - 3050 of 17262

NIST F1 and F2

November 15, 2010
Author(s)
Thomas P. Heavner, Thomas E. Parker, Jon H. Shirley, Paul D. Kunz, Steven R. Jefferts
… The National Institute of Standards and Technology operates a cesium fountain primary … atomic clock, frequency standards …

Cesium Primary Frequency References

February 1, 2007
Author(s)
Steven R. Jefferts, Thomas P. Heavner, Elizabeth A. Donley
… Primary frequency standards with stated inaccuracies of δf/f ~ 10 15 or … use today in several national timing laboratories. These standards, which are the most accurate in the world today, … level of performance. We discuss the operation of these standards as well as possible future improvements that should …

Frequency Comparison of Al + and Hg + Optical Standards

June 24, 2007
Author(s)
Till P. Rosenband, David Hume, Anders Brusch, Luca Lorini, P. O. Schmidt, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, Nathan R. Newbury, W Swann, Windell Oskay, Wayne M. Itano, David J. Wineland, James C. Bergquist
… We compare the frequencies of two single ion frequency standards: 27 Al + and 199 Hg + . Systematic fractional frequency uncertainties of both standards are below 10 -16 , and the statistical measurement … Frequency Comparison of Al + and Hg + Optical Standards …

Microform Calibrations in Surface Metrology

February 1, 1995
Author(s)
Jun-Feng Song, F Rudder, Theodore V. Vorburger, A Hartman, Brian R. Scace, J Smith
… in combination with a series of calibration and check standards and calibration and measurement uncertainty … accordance with the definitions specified in ISO and ASTM standards. Our procedures for conducting microform … percent of the tolerance values specified in ISO and ASTM standards. In this paper, the general calibration …

Microform Calibrations in Surface Metrology

January 1, 1994
Author(s)
Jun-Feng Song, F Rudder, Theodore V. Vorburger, A Hartman, Brian R. Scace, J Smith
… in combination with a series of calibration and check standards and calibration and measurement uncertainty … accordance with the definitions specified in ISO and ASTM standards. Our procedures for conducting microform … percent of the tolerance values specified in ISO and ASTM standards. In this paper, the general calibration …

Network Security Testing

November 1, 2003
Author(s)
Shirley M. Radack
… This ITL Bulletin summarizes NIST Special Publication 800-42, Guideline on Network Security Testing, by John Wack, …

AC Power Standard Using a Programmable Josephson Voltage Standard

April 1, 2009
Author(s)
Bryan C. Waltrip, Bo Gong, Thomas L. Nelson, Yicheng Wang, Charles J. Burroughs, Alain Rufenacht, Samuel Benz, Paul Dresselhaus
… of the generated power to a programmable Josephson voltage standard (PJVS) using a novel differential sampling … AC Power Standard Using a Programmable Josephson Voltage Standard …

Infrared Emittance Measurements at NIST

October 5, 2005
Author(s)
Leonard M. Hanssen, Benjamin K. Tsai, Sergey Mekhontsev
… Laboratory to provide emittance measurements and standards for a broad range of applications including rapid … where Si is opaque; the temperature range is ambient to 800 C. The results are analyzed and compared with those …

Ratio of the Al + and Hg + Optical Clock Frequencies to 17 Decimal Places

August 25, 2008
Author(s)
Wayne M. Itano, Till P. Rosenband, David Hume, P.O. Schmidt, Chin-Wen Chou, A. Brusch, Luca Lorini, Windell Oskay, Robert E. Drullinger, Sarah Bickman, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, William C. Swann, Nathan R. Newbury, David J. Wineland, James C. Bergquist
… Frequency standards (atomic clocks) based on narrow optical transitions … over the past several years at NIST. These two types of standards are both based on single ions confined in Paul … manipulation, detection, and cooling of the Al + ion. Both standards have achieved absolute reproducibilities of a few …

The Programs of the Manufacturing Engineering Laboratory 2005

April 8, 2005
Author(s)
Lisa J. Fronczek, Bessmarie A. Young
… The National Institute of Standards and Technology s Manufacturing Engineering … and apply infrastructural technology, measurements, and standards to meet their needs. This report contains summaries … plans, lifetime objectives, and related measurement and standards work. …

2005 Programs of the Manufacturing Engineering Laboratory

March 1, 2005
Author(s)
Lisa J. Fronczek, Bessmarie A. Young
… The National Institute of Standards and Technology?s Manufacturing Engineering … and apply infrastructural technology, measurements, and standards to meet their needs. This report contains summaries … plans, lifetime objectives, and related measurement and standards work. …

The Trilogy Update of IEEE Std. C62.41

September 1, 2000
Author(s)
Francois D. Martzloff
… Progress report on the restructuring of two IEEE standards concerned with surges in low-voltage a.c. power … lightning, standards, surges …

Open Architecture Controls: The Key to Interoperability

November 2, 2000
Author(s)
John Evans
… the Robotics Industries Association to evaluate interface standards that would reduce those integration costs for … Robotics & Intelligent Systems, Standards, Interface Standards, Interoperability, Open Architecture, Robot …

Ultrasonic Technology: Prospects for Improving Flow Measurements and Standards

January 1, 1999
Author(s)
Tsyh Tyan Yeh, G E. Mattingly
… for improving flow measurements, for serving as transfer standards, and possibly for serving as a primary flow … of their meter calibration capabilities to NIST's flow standards. The reproducibilities of most of these units are 1 … meter that was set up using only length and time standards showed uncertainties of ± 2 %, or better. These …

Low-Frequency Impedance Calibrations at NIST

July 1, 2000
Author(s)
Andrew D. Koffman, Yui-May Chang
… Calibration Laboratory (ICL) at the National Institute of Standards and Technology (NIST). Emphasis will be given to … Proc. 2000 National Conference of Standards Laboratories Workshop and Symposium (NCSL) …
Displaying 3026 - 3050 of 17262
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