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Displaying records 231 to 233.
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231. Weight Functions for Biases in Atomic Frequency Standards
Topic: Physics
Published: 10/5/2008
Author: Jon Hardy Shirley
Abstract: We present a unified treatment of frequency-standard biases that vary significantly during the time of measurement. We introduce three time-dependent weight functions built from the solution of the unperturbed equations of motion for a two-level sys ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900983

232. Weight Functions for Biases in Atomic Frequency Standards
Topic: Physics
Published: 3/1/2010
Author: Jon Hardy Shirley
Abstract: Many perturbations that affect atomic frequency standards vary during the period of measurement. To include this time variation, we introduce three time-dependent weight functions built from the solution of the unperturbed equations of motion of a t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902850

233. Yb Optical Lattice Clock
Topic: Physics
Published: 11/23/2008
Authors: Nathan D. Lemke, Andrew D Ludlow, Zeb Barber, N Poli, C.W. Hoyt, Long-Sheng Ma, Jason Stalnaker, Christopher W Oates, Leo Hollberg, James C Bergquist, A. Brusch, Tara Michele Fortier, Scott A Diddams, Thomas Patrick Heavner, Steven R Jefferts, Thomas Edward Parker
Abstract: We describe the development and latest results of an optical lattice clock based on neutral Yb atoms, including investigations based on both even and odd isotopes. We report a fractional frequency uncertainty below 10^u-15^ for ^u171^Yb.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901008



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