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Frequency Standards and Metrology

Proceedings of the Fourth Symposium, Ancona, Italy, September 5 – 9, 1988

  • Conference proceedings
  • © 1989

Overview

Editors:
  1. Andrea Marchi

    1. Dept. of Electronics and Automatics, Università degli Studi di Ancona, Ancona, Italy

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Table of contents (103 papers)

  1. Front Matter

    Pages I-XX
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  2. Opening Session

    1. Front Matter

      Pages 1-1
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    2. New Looks at Old Ideas

      • N. F. Ramsey
      Pages 2-9

    3. Frequency Metrology and the Fundamental Physical Constants

      • B. W. Petley, J. L. Flowers
      Pages 10-14

    4. Coherent Spectroscopy on a Single Atomic System at Rest in Free Space III

      • H. Dehmelt
      Pages 15-19

  3. Use and Availability of the Frequency Reference

    1. Front Matter

      Pages 21-21
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    2. Use and Availability of the Frequency Standards

      • M. Granveaud
      Pages 22-22

    3. Advanced Applications of Frequency Standards

      • S. Leschiutta
      Pages 23-28

    4. In Search of the Best Clock — an Update

      • D. W. Allan
      Pages 29-36

    5. Comparison of Primary Frequency Standards

      • B. Guinot, J. Azoubib
      Pages 37-42

  5. New Standards

    1. Front Matter

      Pages 69-69
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    2. Presentation of the Session Entitled “New Standards”

      • C. Audoin
      Pages 70-70

    3. High Accuracy Spectroscopy of Stored Ions

      • D. J. Wineland, W. M. Itano, J. C. Bergquist, J. J. Bollinger, F. Diedrich, S. L. Gilbert
      Pages 71-77

    4. Mg Beam Frequency Standard

      • A. Godone, E. Bava, C. Novero
      Pages 78-83
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Keywords

About this book

Since the previous Symposium, several exciting new developments and advances have occurred in the field of frequency standards and metrology. These include the first results on the long-tenn stability of a millisecond Pulsar, for which data 14 integrated over several years now show a stability of around 10- . Improvements in the understanding of various biases in Cesium beam standards promise accuracies in the low 14s for primary standards and in the low 13s for short commercial tubes, for which long tenn stabilities in low 14s have already been shown to be obtainable by accuracy improvement. Beams using optical pumping for state selection and for detection have been operated with excellent results, and more are being realized. Other new frequency standards which have appeared include a macroscopic rf trap with Mercury ions, which perfonns in the low 15s in one day, the sub­ millimeter metastable Magnesium beam, which has shown a short tenn stability 19 in the low 12s in one second and promises an accuracy of 10- , and the cold Hydrogen masers, which have such high stabilities that they cannot be measured with existing local oscillators. Prospects for future developments include laser manipulation of neutrals and spectroscopy of single ions at rest in a trap. Both these groups of techniques have great potential for unprecedented accuracy and short-and long-tenn stability, and new superior frequency standards are expected to be realizable in this way in the not too distant future.

Editors and Affiliations

  • Dept. of Electronics and Automatics, Università degli Studi di Ancona, Ancona, Italy

    Andrea Marchi

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