Concepedia

NBS-4 and NBS-6: The NBS Primary Frequency Standards

D.J. Glaze, H. Hellwig, D.W. Allan, Stephen Jarvis

Metrologia · 1977 · 28 citations · 6 references

DOI

Concepts

Abstract

The NBS primary frequency standard NBS-4 has been operating since January 1973. NBS-5 operated from January 1973 until March 1974. At this time NBS-5 was modified significantly and redesignated NBS-6. The extent and character of these design changes are discussed. NBS-6 operation and evaluation began in March 1975. Results obtained from NBS-4, NBS-5 and NBS-6 are given, along with intercomparisons of some significant parameters.

References

6

An Accuracy Algorithm for an Atomic Time Scale

D.W. Allan, H. Hellwig, D.J. Glaze · Metrologia · 1975 · 290 citations

, , +16

Short-term stability of passive atomic frequency standards

R. F. Lacey, A. L. Helgesson, J.H. Holloway · Proceedings of the IEEE · 1966 · 58 citations

, , +14

Improvements in Atomic Cesium Beam Frequency Standards at the National Bureau of Standards

D.J. Glaze · IEEE Transactions on Instrumentation and Measurement · 1970 · 38 citations

, , +12

Evaluation and Operation of Atomic Beam Tube Frequency Standards Using Time Domain Velocity Selection Modulation

H. Hellwig, Stephen Jarvis, D. Halford et al. · Metrologia · 1973 · 37 citations

, , +10

Determination of Velocity Distributions in Molecular Beam Frequency Standards from Measured Resonance Curves

Stephen Jarvis · Metrologia · 1974 · 25 citations

, , +11