Recent improvements on the atomic fountain clock at SIOM*
Du Yuan-Boa),b), Wei Rong†a), Dong Ri-Changa),b), Zou Fana),b), Wang Yu-Zhua)
       
Short-term frequency stability of the AFC compared with the H-maser, with the fitting curve 2.7 × 10−13 τ −1/2, and it reaches 1.6 × 10−15 at the average time of 32800 seconds.