Spins and electromagnetic moments of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cd</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>101</mml:mn><mml:mo>–</mml:mo><mml:mn>109</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

Yordanov, Deyan T.; Balabanski, D. L.; Bissell, M. L.; Blaum, Klaus; Blazhev, A.; Budinčević, I.; Frömmgen, N.; Geppert, Ch.; Grawe, H.; Hammen, M.; Kreim, Kim Dieter; Neugart, R.; Neyens, G.; Nörtershäuser, W.

doi:10.1103/physrevc.98.011303

Cited by 17 publications

(16 citation statements)

References 35 publications

(44 reference statements)

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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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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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“…Schmidt et al [20] have recently used such calculations to characterize the onset of quadrupole collectivity in 98−108 Cd. Similar calculations describe the ground-state electromagnetic moments in the odd-mass 101−109 Cd isotopes [21].…”

Section: Introductionmentioning

confidence: 83%

“…The SR88MHJM Hamiltonian [21,[54][55][56] employed for these calculations assumes an inert 88 Sr core and includes orbits up to Z = 50 and N = 82. Specifically, the model space is π(p 1 2 , g 9 2 )ν(d 5 2 , g 7 2 , d 3 2 , s 1 2 , h 11 2 ).…”

Section: Model Space and Interactionsmentioning

confidence: 99%

Spectroscopy and excited-state g factors in weakly collective Cd111 : Confronting collective and microscopic models

et al. 2019

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Background: The even cadmium isotopes near the neutron midshell have long been considered among the best examples of vibrational nuclei. However, the vibrational nature of these nuclei has been questioned based on E2 transition rates that are not consistent with vibrational excitations. In the neighbouring odd-mass nuclei, the g factors of the low-excitation collective states have been shown to be more consistent with a deformed rotational core than a vibrational core. Moving beyond the comparison of vibrational versus rotational models, recent advances in computational power have made shell-model calculations feasible for Cd isotopes. These calculations may give insights into the emergence and nature of collectivity in the Cd isotopes.Purpose: To investigate the nature of collective excitations in the A ∼ 100 region through experimental and theoretical studies of magnetic moments and electromagnetic transitions in 111 Cd. Method:The spectroscopy of 111 Cd has been studied following Coulomb excitation. Angular correlation measurements, transient-field g-factor measurements and lifetime measurements by the Doppler-broadened line shape method were performed. The structure of the nucleus was explored in relation to particle-vibration versus particlerotor interpretations. Large-scale shell-model calculations were performed with the SR88MHJM Hamiltonian.Results: Excited-state g factors have been measured, spin assignments examined and lifetimes determined. Attention was given to the reported 5/2 + 753-keV and 3/2 + 755-keV states. The 3/2 + 755-keV level was not observed; evidence is presented that the reported 3/2 + state was a misidentification of the 5/2 + 753-keV state.Conclusions: It is shown that the g factors and level structure of 111 Cd are not readily explained by the particlevibration model. A particle-rotor approach has both successes and limitations. The shell-model approach successfully reproduces much of the known low-excitation structure in 111 Cd.

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“…Being close to the presumably doubly magic 100 Sn, 99 Cd and 101 In serve as good test cases of both empirical and modern SM approaches. Single-particle energies of the nucleons above an assumed inert core of 88 Sr and two-body matrix elements (TBME) of their interactions in the proton/neutron model space consisting of proton 2p 1/2 and 1g 9/2 orbitals below the Z = 50 shell, and neutron 1g 7/2 , 2d 5/2 , 2d 3/2 , 3s 1/2 , and 1h 11/2 orbitals between the N = 50 and the N = 82 shells have been employed to describe the structure of nuclei with similar N and Z [8,11,28].…”

Section: Discussionmentioning

confidence: 99%

Spectroscopy of Cd99 and In101 from β decays of
Park¹,
Krücken²,
Blazhev³
et al. 2020
Phys. Rev. C
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We report on new γ -ray spectroscopy results from β decays of 99 In and 101 Sn. 30 new γ rays were observed following the β decay of 99 In, and inconsistencies in the literature with respect to the γ rays following the β decay of 101 Sn were addressed with two confirmed cases and two new transitions. The experimental γ -ray energies, intensities, and coincidence relationships are discussed with shell model calculations, where theoretical β-decay branching ratios from the parent nuclei and γ -ray cascades of excited states from the daughter nuclei were combined to generate hypothetical βγ spectra and βγ γ coincidence matrices. The most intense β-delayed γ -ray branches in both 99 Cd and 101 In were well reproduced with this approach, and several γ rays were assigned to new excited states based on their good agreement with shell model predictions.

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Spins and electromagnetic moments of Cd101–109

Cited by 17 publications

References 35 publications

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

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

Spectroscopy and excited-state g factors in weakly collective Cd111 : Confronting collective and microscopic models

Spectroscopy of Cd99 and In101 from β decays of
Park¹,
Krücken²,
Blazhev³
et al. 2020
Phys. Rev. C
Self Cite

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Spins and electromagnetic moments of Cd101–109

Cited by 17 publications

References 35 publications

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

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

Spectroscopy and excited-state g factors in weakly collective Cd111 : Confronting collective and microscopic models

Spectroscopy of Cd99 and In101 from β decays of Park1, Krücken2, Blazhev3 et al. 2020Phys. Rev. CSelf Cite

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Spectroscopy of Cd99 and In101 from β decays of
Park¹,
Krücken²,
Blazhev³
et al. 2020
Phys. Rev. C
Self Cite