Spectroscopy of odd-mass cobalt isotopes toward the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>40</mml:mn></mml:mrow></mml:math>subshell closure and shell-model description of spherical and deformed states

Recchia, F.; Lenzi, S. M.; Lunardi, S.; Farnea, E.; Gadea, A.; Mărginean, N.; Napoli, D. R.; Nowacki, F.; Poves, A.; Valiente-Dobón, J. J.; Axiotis, M.; Aydin, S.; Bazzacco, D.; Benzoni, G.; Bizzeti, P. G.; Bizzeti‐Sona, A. M.; Bracco, A.; Bucurescu, D.; Caurier, E.; Corradi, L.; Angelis, G. de; Vedova, F. Della; Fioretto, E.; Gottardo, A.; Ionescu‐Bujor, M.; Iordăchescu, A.; Leoni, S.; Mărginean, R.; Mason, P.; Menegazzo, R.; Mengoni, D.; Million, B.; Montagnoli, G.; Orlandi, R.; Pollarolo, G.; Şahin, E.; Scarlassara, F.; Singh, R. P.; Stefanini, A. M.; Szilner, S.; Ur, C. A.; Wieland, O.

doi:10.1103/physrevc.85.064305

Cited by 65 publications

(47 citation statements)

References 39 publications

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“…The observed population of states with high excitation energy and spin is closely connected with the character of the transfer mechanism, which, at this energy close to the Coulomb barrier tends to maximize the transferred angular momentum [1]. A similar situation has also been observed for lighter systems [4,16,26].…”

Section: Some Considerations On Feeding Patterns In Mntsupporting

confidence: 56%

“…A few newly observed γ rays will be presented and the level schemes will be updated based mainly on systematics with neighboring nuclei. This method was successfully used in different cases [4,9,[25][26][27], where electromagnetic transitions coming from the decay of specific nuclei have been identified by exploiting the fragment-γ coincidence method of the PRISMA-CLARA set-up.…”

Section: The Experimental Set-up and Data Analysismentioning

confidence: 99%

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Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

et al. 2015

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Nuclei produced via multineutron transfer channels have been studied in 90Zr + 208Pb close to the Coulomb barrier energy in a fragment-γ coincident measurement employing the PRISMA magnetic spectrometer coupled to the CLARA γ-array. The selective properties of the reaction mechanism have been discussed in terms of states and their strength excited in the neutron transfer channels leading to 89-94Zr isotopes. A strong population of yrast states, with energies up to ~7.5 MeV has been observed. © 2015 Elsevier B.V

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Section: Some Considerations On Feeding Patterns In Mntsupporting

confidence: 56%

Section: The Experimental Set-up and Data Analysismentioning

confidence: 99%

Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

et al. 2015

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“…The Hamiltonian is the LNPS from Refs. [13,41] with minor revisions [42]. The calculated theoretical spectroscopic strength functions for the valence neutron orbitals are shown in the middle part of Fig.…”

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confidence: 99%

“…On the other hand, the profile corresponding to the d 5/2 orbital appears to be much more fragmented in agreement with the experimental findings. The actual value of the effective single-particle energy gap in 68 Ni from the Hamiltonian [42] at N = 40 is in agreement with the one extracted experimentally and the one extracted in the recent d( 68 Ni, p) 69 Ni reaction study [43], although the calculated strengths appear to be shifted to higher energies by 1 MeV. The missing correlation mechanism to lower these strengths is still not identified and further theoretical investigations need to be implemented in order to understand this trend.…”

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confidence: 99%

Study of the deformation-drivingνd5/2orbital in 67 28 Ni 39 using one-neutron transfer reactions

et al. 2014

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The νg 9/2 , d 5/2 , s 1/2 orbitals are assumed to be responsible for the swift onset of collectivity observed in the region below 68 Ni. Especially the single-particle energies and strengths of these orbitals are of importance. We studied such properties in the nearby 67 Ni nucleus, by performing a (d, p)-experiment in inverse kinematics employing a post-accelerated radioactive ion beam (RIB) at the REX-ISOLDE facility. The experiment was performed at an energy of 2.95 MeV/u using a combination of the T-REX particle detectors, the Miniball γ -detection array and a newly-developed delayed-correlation technique as to investigate μs-isomers. Angular distributions of the ground state and multiple excited states in 67 Ni were obtained and compared with DWBA cross-section calculations, leading to the identification of positive-parity states with substantial νg 9/2 (1007 keV) and νd 5/2 (2207 keV and 3277 keV) singleparticle strengths up to an excitation energy of 5.8 MeV. 50% of the νd 5/2 single-particle strength relative to the νg 9/2 -orbital is concentrated in and shared between the first two observed 5/2 + levels.A comparison with extended Shell Model calculations and equivalent ( 3 He, d) studies in the region around 90 40 Zr 50 highlights similarities for the strength of the negative-parity pf and positive-parity g 9/2 state, but differences are observed for the d 5/2 single-particle strength.

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“…Only state-of-the-art shell-model calculations which included the ν0g 9/2 and ν1d 5/2 orbitals in the model space reproduced the accumulating experimental observations regarding collectivity [9][10][11]13]. Studies of odd-mass nuclei provide complementary information and sensitively test aspects relevant for the effective interactions developed for this region of rapid structural change [14].…”

Section: Introductionmentioning

confidence: 99%

In-beamγ-ray spectroscopy ofMn63

et al. 2016

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Background: Neutron-rich, even-mass chromium and iron isotopes approaching neutron number N = 40 have been important benchmarks in the development of shell-model effective interactions incorporating the effects of shell evolution in the exotic regime. Odd-mass manganese nuclei have received less attention, but provide important and complementary sensitivity to these interactions. Purpose:We report the observation of two new γ-ray transitions in 63 Mn, which establish the (9/2 − ) and (11/2 − ) levels on top of the previously known (7/2 − ) first-excited state. The lifetime for the (7/2 − ) and (9/2 − ) excited states were determined for the first time, while an upper limit could be established for the (11/2 − ) level. Method: Excited states in63 Mn have been populated in inelastic scattering from a 9 Be target and in the fragmentation of 65 Fe. γγ coincidence relationships were used to establish the decay level scheme. A Doppler lineshape analysis for the Doppler-broadened (7/2 − ) → 5/2 − , (9/2 − )→ (7/2 − ) and (11/2 − ) → (9/2 − ) transitions was used to determine (limits for) the corresponding excited-state lifetimes.Results: The low-lying level scheme and the excited-state lifetimes were compared with large-scale shell-model calculations using different model spaces and effective interactions in order to isolate important aspects of shell evolution in this region of structural change.Conclusions: While the theoretical (7/2 − ) and (9/2 − ) excitation energies show little dependence on the model space, the calculated lifetime of the (7/2 − ) level and claculated energy of the (11/2 − ) level reveal the importance of including the neutron g 9/2 and d 5/2 orbitals in the model space. The LNPS effective shell-model interaction provides the best overall agreement with the new data.

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Spectroscopy of odd-mass cobalt isotopes toward theN=40subshell closure and shell-model description of spherical and deformed states

Cited by 65 publications

References 39 publications

Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

Selective properties of neutron transfer reactions in the 90Zr + 208Pb system for the population of excited states in zirconium isotopes

Study of the deformation-drivingνd5/2orbital in 67 28 Ni 39 using one-neutron transfer reactions

In-beamγ-ray spectroscopy ofMn63

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