Determination of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mfrac><mml:mrow><mml:mi>E</mml:mi><mml:mn>2</mml:mn><mml:mn /></mml:mrow><mml:mrow><mml:mi>M</mml:mi><mml:mn>1</mml:mn><mml:mn /></mml:mrow></mml:mfrac></mml:math>Multipole Mixing Ratios of the Gamma Transitions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Cd</mml:mi></mml:mrow><mml:mrow><mml:mn>110</mml:mn></mml:mrow></

Krane, K. S.; Steffen, R.M.

doi:10.1103/physrevc.2.724

Cited by 240 publications

(64 citation statements)

References 38 publications

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“…A qualitative assignment for the multipolarity of the γ-transition from the angular correlation measurements is obtained following the procedure detailed in Ref. [14]. The experimental R DCO in the present work is defined as:…”

Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

et al. 2009

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We report the first observation of high-spin states in nuclei in the vicinity of the "island of inversion", populated via the 18 O+ 18 O fusion reaction at an incident beam energy of 34 MeV.The fusion reaction mechanism circumvents the limitations of non-equilibrated reactions used to populate these nuclei. Detailed spin-parity measurements in these difficult to populate nuclei have been possible from the observed coincidence anisotropy and the linear polarization measurements.The spectroscopy of 33,34 P and 33 S is presented in detail along with the results of calculations within the shell model framework.

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Section: A Determination Of Spins and Paritiesmentioning

confidence: 99%

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

et al. 2009

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“…Spins and parities of excited states are investigated with the γ γ angular-correlation code CORLEONE [59,60] employing the DCO (directional correlation from oriented states) formalism based on the phase convention by Krane, Steffen, and Wheeler [61,62]. The angular distribution of two coincident γ rays in a recoiling nucleus, subsequently emitted from the initial state J 1 through an intermediate state J 2 to the final state J 3 , is described by the following equation:…”

Section: Experimental Procedures and Data Analysismentioning

confidence: 99%

High-spin structures in Xe132 and Xe133 and evidence for isomers along the N
Vogt¹,
Siciliano²,
Birkenbach³
et al. 2017
Phys. Rev. C
12
2
12
0
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The transitional nuclei 132 Xe and 133 Xe are investigated after multinucleon-transfer (MNT) and fusionevaporation reactions. Both nuclei are populated (i) in 136 Xe + 208 Pb MNT reactions employing the highresolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the 136 Xe + 198 Pt MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a 130 Te(α,xn) 134−xn Xe fusion-evaporation reaction employing the HORUS γ -ray array at the University of Cologne. The high-spin level schemes are considerably extended above the J π = (7 − ) and (10 + ) isomers in 132 Xe and above the 11/2 − isomer in PHYSICAL REVIEW C 96, 024321 (2017) isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

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“…Relative intensities in the correlation groups were then fitted to angular correlation functions to extract spins and multipole mixing ratios, as described in Refs. [17,18], using the computer code COR-LEONE [19,20]. The code takes into account the attenuation factors of the detectors [21,22].…”

mentioning

confidence: 99%

Evidence for shape coexistence in98Mo

et al. 2013

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A γγ angular correlation experiment has been performed to investigate the low-energy states of the nucleus 98 Mo. The new data, including spin assignments, multipole mixing ratios and lifetimes reveal evidence for shape coexistence and mixing in 98 Mo, arising from a proton intruder configuration. This result is reproduced by a theoretical calculation within the proton-neutron interacting boson model with configuration mixing, based on microscopic energy density functional theory. The microscopic calculation indicates the importance of the proton particle-hole excitation across the Z = 40 sub-shell closure and the subsequent mixing between spherical vibrational and the γ-soft equilibrium shapes in 98 Mo.PACS numbers: 21.60. Jz, 21.60.Fw, 23.20.En, 27.80.+w For decades, to clarify the nature of shape coexistence has been one of the major objectives in nuclear structure physics [1,2]. The phenomenon has been observed in various regions of the nuclear chart, from light The A ∼ 100 mass region also presents a unique laboratory for the evolution of nuclear shape and shape coexistence [6,7]. The interplay between single-particle and collective degrees of freedom leads to shape phase transitions along isotopic and isotonic chains [8]. The most dramatic examples for shape coexistence and shape transition occur in the Zr isotopic chain, as recently revealed for 94 Zr [9]. Especially in the N = 50−56 Zr isotopes the 0 + 1 state and the very low-lying 0 + 2 state are considered strongly mixed 0p-0h and 2p-2h proton configurations, where protons are promoted from the pf shell to the g 9/2 orbital, as also found in shell model calculations [6,10]. The structure of the low-lying 0 + 2 state in N ≥ 58 Zr isotopes is somewhat more complicated due to neutron contributions. In Mo isotopes, starting from N = 50 the nuclear shape gradually evolves from a sphere and, driven by the enhanced proton-neutron residual interac- * tim.thomas@ikp.uni-koeln.de tion, large deformation sets in at N ≈ 60 [11]. Situated in between, 98 42 Mo 56 is pivotal for understanding shape transitions in this mass region. In particular, the concept of shape coexistence can apply to this nucleus, where proton cross-shell excitations from the Z = 28 − 40 pf shell to the πg 9/2 orbit may play an important role [12]. In fact, experimentally, the first excited state of 98 Mo has been shown to be an coexisting isomeric 0 + state of different shape [13,14]. The mixing between the proton 2p-0h and 4p-2h configurations forms the first excited 0 + state and the ground state as revealed by the investigation of γ transitions depopulating 1 + states with equal strengths to both 0 + states [12], akin to the findings for 92 Zr [6].To address the important issue of the nature of lowlying structure in 98 Mo, we performed a γγ angular correlation experiment. In this paper, the results of this experiment are reported as well as the identification of shape coexistence and the role of a proton intruder configuration in 98 Mo. events were collected using a γγ coincidence tri...

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Determination of theE2M1Multipole Mixing Ratios of the Gamma Transitions inCd110

Cited by 240 publications

References 38 publications

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

High-spin structures in Xe132 and Xe133 and evidence for isomers along the N
Vogt¹,
Siciliano²,
Birkenbach³
et al. 2017
Phys. Rev. C
12
2
12
0
View full text Add to dashboard Cite

Evidence for shape coexistence in98Mo

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Determination of theE2M1Multipole Mixing Ratios of the Gamma Transitions inCd110

Cited by 240 publications

References 38 publications

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

High-spin structures in Xe132 and Xe133 and evidence for isomers along the NVogt1, Siciliano2, Birkenbach3 et al. 2017Phys. Rev. C122120View full textAdd to dashboardCite

Evidence for shape coexistence in98Mo

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High-spin structures in Xe132 and Xe133 and evidence for isomers along the N
Vogt¹,
Siciliano²,
Birkenbach³
et al. 2017
Phys. Rev. C
12
2
12
0
View full text Add to dashboard Cite