In this paper, we propose a new scheme for operating an atomic fountain frequency standard. A sequence of time-spaced balls of atoms, launched over nonoverlapping trajectories, makes possible a reduction of the atomic density and consequently the cold collision frequency shift by one order of magnitude without significant reduction of the useful signal and of the overall stability of the clock. The ultimate accuracy of a Cs fountain could be improved below the 10-15 level currently achieved in operating clocks
Reduction of the cold collisions frequency shift in a multiple velocity fountain: a new proposal / Levi, Filippo; Godone, A; Lorini, Luca. - In: IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL. - ISSN 0885-3010. - 48:(2001), pp. 847-850. [10.1109/58.920721]
Reduction of the cold collisions frequency shift in a multiple velocity fountain: a new proposal
LEVI, FILIPPO;LORINI, LUCA
2001
Abstract
In this paper, we propose a new scheme for operating an atomic fountain frequency standard. A sequence of time-spaced balls of atoms, launched over nonoverlapping trajectories, makes possible a reduction of the atomic density and consequently the cold collision frequency shift by one order of magnitude without significant reduction of the useful signal and of the overall stability of the clock. The ultimate accuracy of a Cs fountain could be improved below the 10-15 level currently achieved in operating clocksI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
