Latest Measurements with the LNE-SYRTE Fountain Clocks

This paper reports our works on the 3 LNE-SYRTE fountains and their frequency comparisons. We have performed new experiments on the frequency shifts related to the microwave synthesis and to the blackbody radiation interaction. We have also refined the accuracy budget of the
⁸⁷
Rb hyperfine splitting and obtained a new measurement of the frequency comparison between Cesium and Rubidium.