S.R. Jefferts

Laser Excitation of the Th229 Nuclear Isomeric Transition in a Solid-State Host

Frequency ratio of the 229mTh nuclear isomeric transition and the 87Sr atomic clock

Testing Local Position Invariance with Four Cesium-Fountain Primary Frequency Standards and Four NIST Hydrogen Masers

Testing the Stability of Fundamental Constants with theHg+199Single-Ion Optical Clock