Hyperfine structures and isotope shifts of ; Possible evidence of octupolar deformation

Coc, A.; Thibault, C.; Touchard, F.; Duong, H. T.; Juncar, P.; Liberman, S.; Pinard, J.; Lermé, J.; Vialle, Jean; Büttgenbach, S.; Mueller, A. C.; Pesnelle, A.

doi:10.1016/0370-2693(85)90193-5

Cited by 143 publications

(98 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the information that can be extracted from the IS calculations and used for the PNC analysis is limited by the accuracy of the SMS calculations. Unless adequate methods are a Coc et al [30,31] developed to significantly improve the accuracy of such calculations it is unlikely that the IS data will provide information of any practical use for PNC analysis. The situation is very different for heavier atoms, such as Fr, Tl, etc.…”

Section: Resultsmentioning

confidence: 99%

Calculation of isotope shifts for cesium and francium

2005

View full text Add to dashboard Cite

We perform ab initio calculations of isotope shifts for isotopes of cesium (from A=123 to A=137) and francium (from A=207 to A=228). These calculations start from the relativistic Hartree-Fock method and make use of several techniques to include correlations. The field (volume) isotope shift is calculated by means of an all-order correlation potential method and within the singlesdoubles partial triples linearized coupled-cluster approach. Many-body perturbation theory in two different formulations is used to calculate the specific mass shift. We discuss the strong points and shortcomings of the different approaches and implications for parity nonconservation in atoms. Changes in nuclear charge radii are found by comparing the present calculations with experiment.

show abstract

Section: Resultsmentioning

confidence: 99%

Calculation of isotope shifts for cesium and francium

2005

View full text Add to dashboard Cite

show abstract

“…We study the evolution of the odd-even staggering of binding energies along the francium and radium isotopic chains and of its lowest-order estimator, 3 (N ). An enhancement of the staggering of 3 (N ) is observed towards neutron number N = 146, which points to contributions beyond pairing correlations. These contributions are investigated in the Hartree-Fock and Hartree-Fock-Bogoliubov approaches, emphasizing the connections to the single-particle level density and nuclear deformation.…”

mentioning

confidence: 99%

Competition between pairing correlations and deformation from the odd-even mass staggering of francium and radium isotopes

et al. 2014

View full text Add to dashboard Cite

The masses of 222,224,[226][227][228][229][230][231][232][233]234 Ra have been determined with the Penning-trap mass spectrometer ISOLTRAP at the ISOLDE facility at CERN, including the previously unknown mass and half-life of 233 Fr. We study the evolution of the odd-even staggering of binding energies along the francium and radium isotopic chains and of its lowest-order estimator, 3 (N ). An enhancement of the staggering of 3 (N ) is observed towards neutron number N = 146, which points to contributions beyond pairing correlations. These contributions are investigated in the Hartree-Fock and Hartree-Fock-Bogoliubov approaches, emphasizing the connections to the single-particle level density and nuclear deformation.

show abstract

“…For the case where the proton and neutron spins are the same, the g factor of the weakly coupled pn configuration is independent of the spin to which they couple to. Individual empirical g factors for π 1h 9/2 and ν2g 9/2 were taken from the magnetic moments of the closest odd-A isotopes available: 213 Fr [35] and 211 Po [48], respectively. Additionally, the ν1i 11/2 and ν2g 7/2 orbitals are also in the near vicinity [15] and their contributions to the total g factor due to configuration mixing with the ν2g 9/2 orbital need to be considered.…”

Section: Discussionmentioning

confidence: 99%

“…The center of gravity of the hyperfine spectrum of 214 Fr was compared to the reference isotope, 221 Fr, for extraction of the isotope shift. All other measured observables were determined relative to 210 Fr, using: [35], I π = 6 + [36], and [37]. The changes in the mean-square charge radii were extracted by using the equation…”

Section: A Laser Spectroscopy Of 214 Frmentioning

confidence: 99%

Laser and decay spectroscopy of the short-lived isotope Fr214 in the vicinity of the N=126 shell closure

et al. 2016

View full text Add to dashboard Cite

Combined decay and laser spectroscopy measurements of the isotope 214 Fr are reported, using the collinear resonance ionization spectroscopy (CRIS) technique at the ISOLDE facility at CERN. For the I π = (1 − ) spin assignment, the g-factor value of g( 214 Fr) = +0.241(16) corresponds to a relatively pure (π 1h 9/2 ⊗ ν2g 9/2 ) ground-state configuration. An alternative interpretation with g( 214 Fr) = +0.144(10), for a (2 − ) spin assignment suggests a greater contribution of configuration mixing with the ν1i 11/2 orbital. As the N = 126 shell closure is passed, a kink is observed at the δ r 2 213,214 value, which is analogous to the behavior observed in the neighboring isotopic chains.

show abstract

Hyperfine structures and isotope shifts of ; Possible evidence of octupolar deformation

Cited by 143 publications

References 10 publications

Calculation of isotope shifts for cesium and francium

Calculation of isotope shifts for cesium and francium

Competition between pairing correlations and deformation from the odd-even mass staggering of francium and radium isotopes

Laser and decay spectroscopy of the short-lived isotope Fr214 in the vicinity of the N=126 shell closure

Contact Info

Product

Resources

About