| Numéro |
J. Phys. Colloques
Volume 42, Numéro C8, Décembre 1981
Troisième Symposium sur les Etalons de Fréquence et la Métrologie / Third Symposium on Frequency Standards and Metrology
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|---|---|---|
| Page(s) | C8-247 - C8-252 | |
| DOI | https://doi.org/10.1051/jphyscol:1981830 | |
Troisième Symposium sur les Etalons de Fréquence et la Métrologie / Third Symposium on Frequency Standards and Metrology
J. Phys. Colloques 42 (1981) C8-247-C8-252
DOI: 10.1051/jphyscol:1981830
National Research Laboratory of Metrology, Tsukuba Science City, Japan.
J. Phys. Colloques 42 (1981) C8-247-C8-252
DOI: 10.1051/jphyscol:1981830
THE CESIUM BEAM FREQUENCY STANDARD NRLM-II
Y. Koga, Y. Nakadan et J. YodaNational Research Laboratory of Metrology, Tsukuba Science City, Japan.
Abstract
Design and performance of the cesium beam frequency standard, NRLM-II, are reported. The interaction length 1 m is adopted from the viewpoints of the C-field homogeneity and the signal to noise ratio of resonance signal. The frequency stability is estimated as better than 8X10-12τ-1/2 for short term and 8X10-14 for 1˜2 days. Preliminary evaluation of accuracy is about 5X10-13, and the standard frequency is estimated as +(2˜3±5)X10-13 higher than that of TAI.