Study of 112Cd via high-resolution and reactions and IBA model calculations

Hertenberger, R.; Eckle, G.; Eckle, F.J.; Graw, G.; Hofer, Donald C.; Kader, H.; Schiemenz, P.; Cǎta-Danil, G.; Hategan, C.; Fujiwara, N.; Hosono, K.; Kondo, M.; Matsuoka, Masayoshi; Noro, T.; Saito, Tadashi; Kato, S.; Matsuki, S.; Blasi, N.; Micheletti, S.; Лео, Р. Де

doi:10.1016/0375-9474(94)90238-0

Cited by 27 publications

(9 citation statements)

References 37 publications

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“…Also the hexadecupole strength may be distributed over a few neighboring states, in contrast to the octupole strength, which is concentrated in the lowest 3 − state. One may compare with a study of 112 Cd by Hertenberger et al [6] and Garrett et al [53]. As for the octupole vibration, it is reasonable to assume that the K =0 + hexadecupole excitation will be pushed down to rather low energy.…”

Section: B Further Degrees Of Freedommentioning

confidence: 87%

“…For the closed shell nucleus 208 Pb only two excited 0 + states have been observed so far: a neutron pairing vibrational mode [1] and an octupole two-phonon excitation [2][3][4]. Intruder configurations may contribute in addition as known for 40 Ca and for less closed nuclei as 90 Zr, 96 Zr [5], 112 Cd [6], and others. In deformed nuclei a large variety of excited 0 + states is expected as discussed in detail below.…”

Section: Introductionmentioning

confidence: 99%

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0+states in deformed actinide nuclei by the(p,t)reaction

et al. 2004

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By means of the ͑p , t͒ reaction we study the excitation spectra of 0 + states in the deformed nuclei 228 Th, 230 Th, and 232 U, using the Q3D magnetic spectrograph facility at the Munich tandem accelerator. At small reaction angles the 0 + transfer angular distributions have steeply rising cross sections which allow us to identify these states in otherwise very complicated and dense spectra. For each of these nuclei we resolve typically about ten excited states with safe 0 + assignments. The studied excitation energies range up to 2.5, 2.7, and 2.3 MeV, respectively, and the summed transfer strengths add to more than 60% of the ground state strength. As in a recent study of 158 Gd we compare with interacting boson approximation (IBA) calculations in the spdf boson space. This highly schematic collective model description, including octupole collectivity, but neglecting other relevant degrees of freedom, gives numbers of excited 0 + states in these actinide nuclei that are rather close to the observed ones.

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Section: B Further Degrees Of Freedommentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

0+states in deformed actinide nuclei by the(p,t)reaction

et al. 2004

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“…Data exist on pair-correlated states in the residual nuclei via measure-arXiv:1910.12093v1 [nucl-ex] 26 Oct 2019 ments of the (t,p) reactions on targets of 112 Cd [15] and 114 Cd [16], which are discussed below. In the case of the residual 112 Cd nucleus, high-resolution (p,p ) and (d,d ) data exist that provide information on spin assignments for excited states in this nucleus, including the location of excited 0 + states [17]. The current work reports on states populated in the 114,116 Cd(p,t) 112,114 Cd reactions up to ≈3 MeV in excitation and with superior resolution compared with the limited data previously available in the literature.…”

Section: Introductionmentioning

confidence: 99%

Pairing properties of the double- β emitter Cd116

et al. 2019

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The pairing properties of the neutrinoless double-β decay candidate 116 Cd have been investigated. Measurements of the two-neutron removal reactions on isotopes of 114,116 Cd have been made in order to identify 0 + strength in the residual nuclei up to ≈3 MeV. No significant L = 0 strength has been found in excited states indicating that the Bardeen-Cooper-Schrieffer (BCS) approximation is a reasonable basis to describe the neutrons in the ground state. This approximation avoids complications in calculations of double-β decay matrix elements that use the quasiparticle randomphase approximation (QRPA) techniques. However this is not the case for the protons, where pair vibrations are prevalent and the BCS approximation is no longer valid, complicating the use of traditional QRPA techniques for this system as a whole.

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“…Evidence for the 2p-4h nature of the intruder states was obtained via ( 3 He, n) two-proton transfer experiments [5], two-neutron transfer measurements [6,7], and inelastic scattering reactions (see, e.g., Refs. [8,9]). Owing to enhanced proton-neutron correlations, the intruder excitations form more-deformed structures, and after mixing with the spherical levels is taken into account, the underlying vibrational interpretation of the "normal" phonon states was not questioned.…”

Section: Introductionmentioning

confidence: 99%

“…Comprehensive level schemes have become available for the many of the stable Cd isotopes through detailed spectroscopy, by using primarily fusion-evaporation reactions [11][12][13][14][15][16][17], inelastic scattering and transfer reactions [8,[18][19][20][21][22][23][24], the (n, n γ ) reaction [9,12,[25][26][27][28][29][30][31][32], and β decay [12][13][14][33][34][35]. These studies have provided a wealth of data not previously available.…”

Section: Introductionmentioning

confidence: 99%

Breakdown of vibrational motion in the isotopesCd110−116

2008

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A systematic study is made of the Cd isotopes [110][111][112][113][114][115][116] Cd by making use of available experimental data and interacting boson model calculations incorporating both normal vibrational levels and intruder excitations. At the two-phonon level, the calculations appear to reproduce the data reasonably well in 110-114 Cd, whereas they break down completely for the 0 + states in 116 Cd. At the three-phonon level, systematic deviations occur across the Cd isotopic chain, revealing the breakdown of vibrational motion in low-spin states. Combined with the failure to reproduce 116 Cd at the two-phonon level, it is possible that the Cd isotopes may not represent vibrational systems and that the essential physics of their motion has been missing.

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Study of 112Cd via high-resolution and reactions and IBA model calculations

Cited by 27 publications

References 37 publications

0+states in deformed actinide nuclei by the(p,t)reaction

0+states in deformed actinide nuclei by the(p,t)reaction

Pairing properties of the double- β emitter Cd116

Breakdown of vibrational motion in the isotopesCd110−116

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