Jpn. J. Appl. Phys. 10 (1971) pp. 1066-1076  |Next Article|  |Table of Contents|
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Stark Voltmeter as an Electromotive Force Reference

Ko Hara, Takeshi Kobayashi, Toshimi Matsui, Takahiro Nakase and Genta Yonezaki

(Received December 20, 1969; revised February 24, 1971)

An experimental study on a voltmeter application of the Stark effect in molecular rotational transitions aiming at an atomic voltage standard is described. A spectrometer using a Fabry-Perot resonator type Stark cell is built and the transitions J=2←1, ΔM=±1 of s-trioxane C₃H₆O₃ in the ground vibrational state at 21 GHz were observed. Preliminary values of the rotational constant B and µ/h (µ: dipole moment) are found to be 5273.2503±0.0006 MHz and (3.11536±0.00024)×10⁸ esu, respectively. The estimated reproducibility of the voltmeter is 80 ppm at about 350 V/cm. Effects of three factors, Q-pulling of the cell, rf leakage field coupling in an external circuit and a frequency pulling by satellite lines, on the accuracy of the frequency measurement of spectra are discussed. The Stark cell is particularly devised for this study so as to establish an extremely uniform dc electric field and desired electrode separation. Performance of each part of the voltmeter is also reviewed.

URL: http://jjap.jsap.jp/link?JJAP/10/1066/
DOI: 10.1143/JJAP.10.1066

References

1. Y. Beers and G. L. Strine: IRE Trans. on Instrumentation I-11 (1962) 171.
2. Y. Beers and T. W. Russell: IEEE Trans. Instrum. and Measur. IM-15 (1966) 380.
3. J. H. Shirley: NBS Rep. 6735 (1960).
4. K. Hara: Bull. Electrotech. Lab. 31 (1967) 1136.
5. C. H. Townes and A. L. Schawlow: Microwave Spectroscopy, (McGraw-Hill, New York, 1955).
6. T. Kobayashi: Bull. Electrotech. Lab. 32 (1968) 239.
7. D. E. Gray: American Institute of Physics Handbook, (McGraw-Hill, New York, 1963) 2nd ed. pp. 9–146.
8. E. Amble: Phys. Rev. 83 (1951) 210A[APS].
9. T. Oka, H. Tsuchiya, S. Iwata and Y. Morino: Bull. Chem. Soc. Jpn. 37 (1964) 4.
10. J. Bellet, J. Lemaire and C. Samson: C. R. Acad. Sci. (Paris) 262 (1966) Serie B 885.
11. B. N. Taylor, W. H. Parker and D. N. Langenberg: Rev. Mod. Phys. 41 (1969) 375[APS].