Magnetic moment and lifetime measurements of Coulomb-excited states in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cd</mml:mi><mml:mprescripts /><mml:none /><mml:mn>106</mml:mn></mml:mmultiscripts></mml:math>

Benczer‐Koller, N.; Kumbartzki, G.; Speidel, K.‐H.; Torres, D. A.; Robinson, S. J. Q.; Sharon, Y. Y.; Allmond, J. M.; Fallon, P.; Abramovic, I.; Bernstein, L. A.; Bevins, James E.; Crawford, H. L.; Guevara, Z. E.; Hurst, A. M.; Kirsch, Leo; Laplace, T. A.; Lo, Alvin; Matthews, E. F.; Mayers, I.; Phair, L.; Ramírez, F.; Wiens, A.

doi:10.1103/physrevc.94.034303

Cited by 10 publications

(10 citation statements)

References 15 publications

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“…The reasons are (i) the fact that the B(E2) values in table III of [122] are inconsistent with previously published 106 Cd values, and, (ii) these B(E2) values are inconsistent with the Cd systematics for the light Cd isotopes.…”

Section: Discussioncontrasting

confidence: 52%

“…We note that shortly before the submission of this work, new experimental results on B(E2) values and gfactors have become available (see [122]) but have not been addressed in our current paper. The reasons are (i) the fact that the B(E2) values in table III of [122] are inconsistent with previously published 106 Cd values, and, (ii) these B(E2) values are inconsistent with the Cd systematics for the light Cd isotopes.…”

Section: Discussionmentioning

confidence: 99%

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Shell-model-based deformation analysis of light cadmium isotopes

et al. 2017

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Large-scale shell-model calculations for the even-even Cadmium isotopes 98 Cd -108 Cd have been performed with the ANTOINE code in the π(2p 1/2 ; 1g 9/2 ) ν(2d 5/2 ; 3s 1/2 ; 2d 3/2 ; 1g 7/2 ; 1h 11/2 ) model space without further truncation. Known experimental energy levels and B(E2) values could be well reproduced. Taking these calculations as a starting ground we analyze the deformation parameters predicted for the Cd isotopes as a function of neutron number N and spin J using the methods of model independent invariants introduced by K. Kumar and D. Cline.

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Section: Discussioncontrasting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Shell-model-based deformation analysis of light cadmium isotopes

et al. 2017

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“…As is apparent from Tables I and II, the present work agrees well with the original Coulomb excitation data [6,7] for all states observed, strongly supporting the adopted values over the discrepant results reported in Ref. [8].…”

Section: This Worksupporting

confidence: 92%

“…The known information on the lowest-lying levels in 106 Cd primarily stems from two Coulomb excitation experiments performed in the 1960s and 1970s [6,7]. More recently, an excited-state g-factor measurement on 106 Cd [8] allowed for the extraction of lifetimes via the Doppler-shift-attenuation method from the observed, prominent γ -ray line shapes. These excited-state lifetimes, however, disagree with the adopted values from Coulomb excitation.…”

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confidence: 99%

Exploring the role of high- j configurations in collective observables through the Coulomb excitation of Cd106

et al. 2021

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The shape and collectivity of 106 Cd was investigated via a sub-barrier-energy Coulomb excitation experiment performed at the National Superconducting Cyclotron Laboratory Re-accelerator facility using the JANUS setup. Transition matrix elements between low-lying states were found to agree with adopted values, and information on the shape and collectivity of higher-lying states was extracted for the first time. Locally optimized large-scale shell-model calculations were found to describe well the B(E 2) transition strengths but failed to reproduce the spectroscopic quadrupole moments Q s . An analysis of the E 2 rotational invariants and the normalized quadrupole moment q s indicates that this may be due to a significant degree of triaxiality in 106 Cd which is not captured by the present shell-model calculations. Analogous calculations for the Fe isotopes (two protons below the Z = 28 magic number) reveal the critical role of highj neutron configurations for the description of quadrupole moments in the heavy Fe and Cd isotopes (two protons below magic Z = 50), but this effect is insufficient to explain the shape of 106 Cd, posing a puzzle for the understanding of nuclear structure towards N = 50.

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“…Recent experiments [9] have highlighted a linear behavior of Q−moments for the 11/2 − states of the neutron-rich Cd isotopes even beyond the h 11/2 orbital. This unique simplification of the complex configurations in Cd isotopes has surprised the community [10] and has eventually led to extensive studies of Cd isotopes, from understanding the moments of 11/2 − states and other single-particle states in odd-A nuclei to the B(E2) values of the first excited 2 + states in even-even nuclei [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. This is in addition to the continuing interest in Cd isotopes since decades, both theoretical and experimental , where they were first labeled as vibrators and then refuted this status by supporting a weakly deformed structure.…”

Section: Introductionmentioning

confidence: 99%

Evolution of nuclear structure in and around Z = 50 closed shell: Generalized seniority in Cd, Sn and Te isotopes

2019

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We study the quadrupole moments and the B(E2; 2 + → 0 + ) values for the 11/2 − states and the first 2 + states, respectively, by using a multi-j generalized seniority approach in the Cd (Z = 48), Sn (Z = 50) and Te (Z = 52) isotopic chains. The g-factor trends have also been discussed. Although, Cd and Te isotopes represent two-proton hole and two-proton particle systems, thus involving both kind of particles (protons and neutrons) in contrast to Sn (Z = 50) where only neutrons play a role, we find that a similar model based on neutron valence space alone is able to explain nearly all the gross features and trends. This paper represents the first attempt to test the validity of the generalized seniority scheme away from the semi-magic region and appears to be surprisingly successful. The linearly varying quadrupole moments in Cd, Sn and Te isotopes, are described by using a consistent multi-j configuration. The asymmetric double-hump behavior of B(E2) values in Cd and Te isotopes are understood in a manner identical to that of Sn isotopes by using the generalized seniority scheme for the first time. No shell quenching is supported in the calculations; hence, the neutron magic numbers, N = 50 and N = 82, remain robust in these isotopic chains.

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Magnetic moment and lifetime measurements of Coulomb-excited states inCd106

Cited by 10 publications

References 15 publications

Shell-model-based deformation analysis of light cadmium isotopes

Shell-model-based deformation analysis of light cadmium isotopes

Exploring the role of high- j configurations in collective observables through the Coulomb excitation of Cd106

Evolution of nuclear structure in and around Z = 50 closed shell: Generalized seniority in Cd, Sn and Te isotopes

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