Quadrupole moments of radium isotopes from the 7p
2
P
3/2 hyperfine structure in Ra II

Neu, W.; Neugart, R.; Otten, Ernst W.; Passler, G.; Wendt, Κ.; Fricke, B.; Arnold, E.; Kluge, H. J.; Ulm, G.

doi:10.1007/bf01444425

Cited by 44 publications

(44 citation statements)

References 23 publications

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“…Taking into account our previous findings for RaO [45], X(RaF) ≈ 0.6 · X(RaO), making RaF less sensitive to T,P−odd effects associated with the Schiff moment than RaO. HFS constants of 223 Ra + were [58,59] 3404 (2) 57 (8) 667 (2) computed to demonstrate the accuracy of our approach and, as seen from Table III, one might safely assume 10% theoretical uncertainty of our final results (our value of A( 2 P 3/2 ) is within the error margin of the experimental one).…”

Section: Resultsmentioning

confidence: 57%

Ab initiostudy of radium monofluoride (RaF) as a candidate to search for parity- and time-and-parity–violation effects

et al. 2014

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Relativistic ab initio calculations have been performed to assess the suitability of RaF for experimental search of P− and T,P−violating interactions. The parameters of P− and T,P−odd terms of the spin-rotational Hamiltonian have been calculated for the 2 Σ electronic ground state of 223 RaF molecule. They include the Wa parameter, which is critical in experimental search for nuclear anapole moment and the parameters W d and WSP required to obtain restrictions on the electric dipole moment of the electron and T,P−odd scalar−pseudoscalar interactions, respectively. The parameter X corresponding to the "volume effect" in the T,P−odd interaction of the 223 Ra nuclear Schiff moment with electronic shells of RaF has also been computed. Spectroscopic and hyperfine structure constants for 223 RaF and 223 Ra + have been computed as well, demonstrating the accuracy of the methods employed.

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Section: Resultsmentioning

confidence: 57%

Ab initiostudy of radium monofluoride (RaF) as a candidate to search for parity- and time-and-parity–violation effects

et al. 2014

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“…As input we use ab initio many-body calculations of the field shifts and of the specific mass shifts of the relevant levels in Ra + . Our method, which uses all available data consistently, and takes the specific mass shifts into account, extends the previous analysis of the ISOLDE Collaboration at CERN [23][24][25]. In Sec.…”

Section: Introductionmentioning

confidence: 79%

Charge radii of radium isotopes

et al. 2012

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We present a combined analysis of the available isotope-shift data from the optical spectra of Ra atoms and Ra + ions. Atomic structure calculations of the field-shift and specific mass-shift constants of the low-lying levels in Ra + are used. The nuclear radial differences δ r 2 for the radium isotopes are derived and compared to previous analyses and nuclear models. We discuss the relevance of our results to measurements of atomic parity violation in a chain of Ra + isotopes.

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“…TABLE I. Long-lived neutron-rich isotopes of radium with their lifetime and nuclear spin I [32], magnetic moments µ I (in units of µ N ) [33], and quadrupole moments Q (in barns) [34]. Also shown are the decay series the isotopes occur in and possible low-activity production sources; A = 227 and 229 have to be produced by nuclear reactions.…”

Section: Radium Isotopesmentioning

confidence: 99%

“…In this section, we will investigate the sensitivity to the external fields of the candidate Ra + clock transitions for the different isotopes. Input for the required atomic-structure quantities is taken from the recent KVI experiment [17] and from experiments at the On-Line Isotope Mass Separator (ISOLDE) facility at CERN [33][34][35]. The wavelengths of the relevant transition are taken from Ref.…”

Section: Sensitivity To External Field Shiftsmentioning

confidence: 99%

Potential of electric quadrupole transitions in radium isotopes for single-ion optical frequency standards

Versolato

Wansbeek²,

Jungmann³

et al. 2011

Phys. Rev. A

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We explore the potential of the electric quadrupole transitions 7s 2 S 1/2 -6d 2 D 3/2 , 6d 2 D 5/2 in radium isotopes as single-ion optical frequency standards. The frequency shifts of the clock transitions due to external fields and the corresponding uncertainties are calculated. Several competitive A Ra + candidates, with A = 223-229, are identified. In particular, we show that the transition 7s 2 S 1/2 (F = 2,m F = 0)-6d 2 D 3/2 (F = 0,m F = 0) at 828 nm in 223 Ra + , with no linear Zeeman and electric quadrupole shifts, stands out as a relatively simple case, which could be exploited as a compact, robust, and low-cost atomic clock operating at a fractional frequency uncertainty of 10 −17 . With more experimental effort, the 223,225,226 Ra + clocks could be pushed to a projected performance reaching the 10 −18 level.

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Quadrupole moments of radium isotopes from the 7p 2 P 3/2 hyperfine structure in Ra II

Cited by 44 publications

References 23 publications

Ab initiostudy of radium monofluoride (RaF) as a candidate to search for parity- and time-and-parity–violation effects

Ab initiostudy of radium monofluoride (RaF) as a candidate to search for parity- and time-and-parity–violation effects

Charge radii of radium isotopes

Potential of electric quadrupole transitions in radium isotopes for single-ion optical frequency standards

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