A new generation of hydrogen quantum frequency and time standards at Nizhnii Novgorod Kvarts Instrument Building Research Institute

Demidov, N. A.; Васильев, В. И.; Vorontsov, V. G.; Gorev, V. S.; Kozlov, Sergei A.; Logachev, V. A.

doi:10.1007/s11018-010-9395-z

Meas Tech

2009

DOI: 10.1007/s11018-010-9395-z

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A new generation of hydrogen quantum frequency and time standards at Nizhnii Novgorod Kvarts Instrument Building Research Institute

N. A. Demidov¹,

В. И. Васильев²,

V. G. Vorontsov³

et al.

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Optimal design and validation of atom trapping and atomic storage time for active hydrogen maser

Liu

Wang

et al. 2021

Review of Scientific Instruments

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From microwave atomic clocks to light clocks, atomic or ionic clocks often rely on atom or ion trapping or manipulation technology. Trapping hydrogen (H) atoms in atomic storage bulbs (ASBs) is one of the key technologies of H atomic clocks. H atoms remain in an ASB for some time during which they undergo several relaxation processes (including spin-exchange collision relaxation, atom–wall collision relaxation, and magnetic-field inhomogeneity relaxation) and interact with the electromagnetic field within the resonant cavity in the TE011 mode, giving rise to continuous atomic transitions and self-oscillations. In this study, an optimal atomic storage time Tb for a H maser was determined by optimizing various collisional relaxation times of the atomic ensemble and reducing the width of the atomic resonance line through the continuously adjustable length and radius of the opening of an ASB at various atomic beam intensities ξ (which is the number of atoms in the atomic beam), namely, 3 × 1012 atoms/s, 4 × 1012 atoms/s, and 5 × 1012 atoms/s, while keeping the structural properties and physical conditions of the H maser unchanged. For ξ = 5 × 1012 atoms/s and Tb ≈ 0.8 s, a frequency stability of 0.95 × 10−15 could be achieved at 1000 s.

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Optimal design and validation of atom trapping and atomic storage time for active hydrogen maser

Liu

Wang

et al. 2021

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

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A new generation of hydrogen quantum frequency and time standards at Nizhnii Novgorod Kvarts Instrument Building Research Institute

Cited by 1 publication

References 1 publication

Optimal design and validation of atom trapping and atomic storage time for active hydrogen maser

Optimal design and validation of atom trapping and atomic storage time for active hydrogen maser

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