NDLI: Determination of the Rydberg constant by direct frequency measurement

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Proton/electron mass ratio and the electron's "atomic mass"

A review of realizations and comparisons of Josephson array voltage standards

The 1s Lamb shift of hydrogen-like very heavy ions measured at an electron cooler

Spectroscopy of the 1s-2s splitting in muonium

Anomalous magnetic moment of the muon and hyperfine structure and Zeeman effect in ground state muonium

Feasibility study on an indirect quantum standard of the ampere

A new millisecond pulsar observation system at CRL

GPS time precision enhancement between Telecommunication Laboratories, R.O.C. and Communication Research Laboratory, Japan

Resonant frequencies and Q factors of dielectric parallelepipeds by measurement and by FDTD

Interlocking Rogowski coils: a fool's transformer

Analysis and calculation of magnetic shielding effectiveness for comparators

An automatic bridge for inductive voltage dividers

Progress report on the linear ion trap extended (LITE)

Progress in absolute determination of /spl Phi//sub 0/ using superconducting magnetic levitation

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The present watt balance: a measure of its resolution

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Noise reduction in an optical interferometer for picometer measurements

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High sensitivity fiber-optic magnetic field sensors based on iron garnets

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International comparison of standard capacitors in Asia/Pacific metrology programme

Precision automated capacitance bridges for the low frequency range at the PTB

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Design and performance evaluation of the NIST digital impedance bridge

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Absolute measurements of the densities of silicon crystals in vacuum for a determination of the Avogadro constant

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Characterization of photoreceivers used in lightwave instrumentation

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Calibration of inductive voltage dividers at extremely low frequencies

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Measurements on indoor reception of broadcast signals at 800 MHz

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Mass spectrometry at and below 0.1 parts per billion

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Recent developments in RF and microwave dielectric measurements at the UK National Physical Laboratory

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Precision measurement of the hydrogen and deuterium 1S-2S transition with a phase locked laser frequency chain

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Calibration technique using new calculable standard for RF reflectometers fitted with GPC-7 connectors

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Proceedings of Conference on Precision Electromagnetic Measurements Digest

Using the modified measuring setup at the PTB

Conference on Precision Electromagnetic Measurements

1988 Conference on Precision Electromagnetic Measurements

Determination of the Rydberg constant by direct frequency measurement

Content Provider	IEEE Xplore Digital Library
Author	Nez, F. Plimmer, M.D. Sourzeix, S. Julien, L. Felder, R. Millerioux, Y. De Natale, P. Biraben, F.
Copyright Year	1994
Description	Author affiliation: Lab. Kastler-Brossel, Univ. Pierre et Marie Curie, Paris, France (Nez, F.; Plimmer, M.D.; Sourzeix, S.; Julien, L.)
Abstract	We have performed a pure frequency measurement of the 2S8S/D two photon transition in atomic hydrogen, without any interferometry. The hydrogen frequencies are compared with the difference of two optical standards, the methane stabilized He-Ne laser and the iodine stabilized He-Ne laser. In this way, an optical frequency of atomic hydrogen is directly linked for the first time to the cesium clock. We deduce a new value for the Rydberg constant with an uncertainty of 2.2 parts in 10/sup 11/. This value is currently the most precise available.
File Size	89984
File Format	PDF
ISBN	0780319842
DOI	10.1109/CPEM.1994.333338
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-06-27
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hydrogen Optical interferometry Atom optics Atomic beams Atomic measurements Laser stability Laser transitions Performance evaluation Frequency measurement Clocks
Content Type	Text
Resource Type	Article

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