AREAS OF PROMISE FOR DEVELOPMENT OF FUTURE PRIMARY FREQUENCY STANDARDS

[51] FURTHER ASPECTS OF THE THEORY OF THE MASER [J]. PHYSICAL REVIEW, 1956, 102 (05): : 1308 - 1321

[52] CHARACTERISTICS OF AN AMMONIA BEAM MASER [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1961, 16 (09) : 1728 - &

[53] SOME CAUSES OF RESONANT FREQUENCY SHIFTS IN ATOMIC BEAM MACHINES .1. SHIFTS DUE TO OTHER FREQUENCIES OF EXCITATION [J]. JOURNAL OF APPLIED PHYSICS, 1963, 34 (04) : 783 - &

[54] MULTIPLE-REGION HYDROGEN MASER WITH REDUCED WALL SHIFT [J]. PHYSICAL REVIEW A, 1970, 1 (02): : 429 - &

[55] VESSOT R, 1966, IEEE T INSTRUM MEAS, VIM15, P165

[56] ZITZEWITZ PW, 24 P ANN S FREQ CONT

[51] FURTHER ASPECTS OF THE THEORY OF THE MASER [J]. PHYSICAL REVIEW, 1956, 102 (05): : 1308 - 1321

[52] CHARACTERISTICS OF AN AMMONIA BEAM MASER [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1961, 16 (09) : 1728 - &

[53] SOME CAUSES OF RESONANT FREQUENCY SHIFTS IN ATOMIC BEAM MACHINES .1. SHIFTS DUE TO OTHER FREQUENCIES OF EXCITATION [J]. JOURNAL OF APPLIED PHYSICS, 1963, 34 (04) : 783 - &

[54] MULTIPLE-REGION HYDROGEN MASER WITH REDUCED WALL SHIFT [J]. PHYSICAL REVIEW A, 1970, 1 (02): : 429 - &

[55] VESSOT R, 1966, IEEE T INSTRUM MEAS, VIM15, P165

[56] ZITZEWITZ PW, 24 P ANN S FREQ CONT