Investigations of Ra + properties to test possibilities for new optical-frequency standards
作者： B. K. Sahoo , B. P. Das , R. K. Chaudhuri , D. Mukherjee , R. G. E. Timmermans
DOI: 10.1103/PHYSREVA.76.040504
关键词: Atomic clock 、 Metastability 、 Quadrupole 、 Optical frequencies 、 Ion 、 Polarizability 、 Physics 、 Atomic physics 、 Hyperfine structure 、 Dipole
摘要: The present work tests the suitability of narrow transitions 7s (2)S(1/2)-> 6d (2)D(3/2) and (2)D(5/2) in Ra(+) for optical frequency standard studies. Our calculations lifetimes metastable states using relativistic coupled-cluster theory suggest that they are sufficiently long to be considered as a potential candidate an atomic clock. This is further corroborated by our studies hyperfine interactions, dipole quadrupole polarizabilities, moments appropriate this system.
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