Hyperfine structure of the metastable P2 state of alkaline-earth-metal atoms as an accurate probe of nuclear magnetic octupole moments
نویسندگان
چکیده
Measuring the hyperfine structure HFS of long-lived P2 states of divalent atoms may offer the opportunity of extracting relatively unexplored nuclear magnetic octupole and electric hexadecapole moments. Here, using relativistic many-body methods of atomic structure and the nuclear shell model, we evaluate the effect of these higher nuclear moments on the hyperfine structure. We find that the sensitivity of HFS interval measurements in Sr needed to reveal the perturbation caused by the nuclear octupole moment is on the order of kHz. The results of similar analyses for Be, Mg, and Ca are also reported.
منابع مشابه
Hyperfine structure of the metastable P2 state of alkaline earth atoms as an accurate probe of nuclear magnetic octupole moments
Measuring the hyperfine structure (HFS) of long-lived P2 states of divalent atoms may offer the opportunity of extracting relatively unexplored nuclear magnetic octupole and electric hexadecapole moments. Here, using relativistic many-body methods of atomic structure and the nuclear shell model, we evaluate the effect of these higher nuclear moments on the hyperfine structure. We find that the ...
متن کامل4 D ec 2 00 3 Properties of metastable alkaline - earth - metal atoms calculated using an accurate effective core potential
The first three electronically excited states in the alkaline-earth-metal atoms magnesium, calcium, and strontium comprise the (nsnp) P o J (J = 0, 1, 2) fine-structure manifold. All three states are metastable and are of interest for optical atomic clocks as well as for cold-collision physics. An efficient technique—based on a physically motivated potential that models the presence of the ioni...
متن کاملStudy of Ionic Solvation and Determination of Solvation Numbers of Alkaline Earth Cations with HMPA in Nitromethane Using 1H NMR Technique
A proton NMR method for the drtermination of salvation numbers of alkaline earth cations with hexamethyl phosphoramide (HMPA) in nitromethane (NM) as diluents is described. The method is based on monitoring the resonance frequency of HMPA protons as a function of HMPA / metal ion molar ratio at constant metalion concentration. The average salvation number of cations, , at any HMPA / metal ...
متن کاملFeasibility of Cooling and Trapping Metastable Alkaline-Earth Atoms
Metastability and long-range interactions of Mg, Ca, and Sr in the lowest-energy metastable P2 state are investigated. The calculated lifetimes are 38 min for Mg , 118 min for Ca , and 17 min for Sr , supporting feasibility of cooling and trapping experiments. The quadrupole-quadrupole long-range interactions of two metastable atoms are evaluated for various molecular symmetries. Hund’s case (c...
متن کاملNuclear Magnetization Distribution and Hyperfine Splitting in Bi
Hyperfine splitting in Bi 82+ and Pb 81+ ions was calculated using continuum RPA approach with effective residual forces. To fix the parameters of the theory the nuclear magnetic dipole moments of two one-particle and two one-hole nuclei around 208 Pb were calculated using the same approach. The contribution from velocity dependent two-body spin-orbit residual interaction was calculated explici...
متن کامل