Thorough<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>γ</mml:mi></mml:mrow></mml:math>-ray and particle decay investigations of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Ni</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>58</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

Johansson, Emma; Rudolph, Dirk; Ragnarsson, I.; Andersson, L.-L.; Torres, D. A.; Andreoiu, C.; Baktash, C.; Carpenter, M. P.; Charity, R. J.; Chiara, C. J.; Ekman, Jörgen; Fahlander, C.; Pechenaya, O. L.; Reviol, W.; Rietz, R. du; Sarantites, D. G.; Seweryniak, D.; Sobotka, L. G.; Yu, C. H.; Zhu, S.

doi:10.1103/physrevc.80.014321

Cited by 30 publications

(25 citation statements)

References 37 publications

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“…As a result, their level structure at low spins is reasonably well described with shell-model calculations, in which low-energy excitations are mostly determined by the neutrons filling the p 3/2 , f 5/2 , p 1/2 , and g 9/2 orbitals [4,5]. At higher spins, rotational bands have been measured in [56][57][58][59][60][61][62][63] Ni [6][7][8][9][10][11], including highly deformed and even superdeformed bands in 56,57 Ni [7,12]. Further, the experimental results for 68 Ni indicate the presence of a subshell closure at N = 40 [13][14][15][16], although shell model calculations estimate a rather small (≈2 MeV) gap allowing for cross-shell excitations at low and moderate spins [17].…”

Section: Introductionmentioning

confidence: 82%

“…In addition, recent measurements supported by Monte Carlo shell model calculations suggest a triple-shape coexistence [18,19], also expected for 70 Ni [20,21]. The experimental study of γ decay in the Ni isotopes has been a fundamental tool for the understanding of both singleparticle and collective excitations [6][7][8][9][10][11][12]. Measurements of the γ -strength function (γ SF), or average reduced γ -transition probability [22], have increased our knowledge on statistical γ decay and γ resonances [23], present in various Ni isotopes.…”

Section: Introductionmentioning

confidence: 99%

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Investigating the γ decay of Ni65 from particle- γ coincidence data

et al. 2017

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The γ decay of 65 Ni has been studied from particle-γ coincidence data on the 64 Ni(d,pγ ) 65 Ni reaction. γ -ray spectra at excitation energies below E x ≈ 2 MeV have been studied and compared with previous measurements. Coincidences corresponding to E x ≈ 4.4-6.1 MeV have been used to constrain the shape of the nuclear level density and γ -strength function of 65 Ni by means of the Oslo method. The experimental γ -strength function presents an enhancement at γ energies below E γ ≈ 3 MeV. In addition, a resonance-like structure centered at E γ ≈ 4.6 MeV is seen together with accumulated strength at E γ ≈ 2.6-3.6 MeV. The obtained results contribute to the systematic study of γ decay in the Ni isotopes, which is of great interest for the understanding of both single-particle and collective nuclear structure phenomena.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Investigating the γ decay of Ni65 from particle- γ coincidence data

et al. 2017

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“…The highest spin states are observed in 62 Zn [1,4] and 58 Ni [5,6]. Reaching spins up to I = 35 and record-high excitation energies (E x > 40 MeV), the superdeformed (SD) bands in these two isotopes are identified close to I max or maybe even to I max for one SD band in 62 Zn.…”

Section: Introductionmentioning

confidence: 91%

Comparative study of rotational bands in theA≈60mass region: Modification of Nilsson parameters

et al. 2014

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The large number of high-spin bands that have been observed in A = 56-62 nuclei are analyzed systematically within the cranked Nilsson-Strutinsky approach. Optimized Nilsson single-particle parameters are derived from investigations of energy differences between experimental and calculated rotational bands. Specifically, the relative energies of bands in neighboring nuclei whose configurations differ by having a high-j orbital either filled or empty are analyzed. The level schemes calculated with the new Nilsson parameters are compared with those using standard Nilsson parameters. Some configuration assignments are revised.

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“…Rotational sequences have been reported at moderate and high spin in some of the lighter even-even Ni isotopes: highly deformed and even superdeformed bands, built upon lower-lying single-particle excitations, have been observed in doubly-magic 56 Ni [32,33], as well as in 57 Ni [34,35], 58 Ni [36][37][38], 59 Ni [39], and 60 Ni [40,41]. Remarkably, partial proton and alpha decays out of some of these bands have been reported in 56 Ni and 58 Ni.…”

Section: Introductionmentioning

confidence: 99%

Single-particle and collective excitations in63Ni

et al. 2013

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Single-particle and collective excitations in Ni-63Albers, M.; Zhu, S.; Janssens, R. V. F.; Gellanki, Jnaneswari; Ragnarsson, Ingemar; Alcorta, M.; Baugher, T.; Bertone, P. F.; Carpenter, M. P.; Chiara, C. J.; Chowdhury, P.; Deacon, A. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Ca,2α3nγ ) 63 Ni reaction at beam energies between 275 and 320 MeV. Three collective bands, built upon states of single-particle character, were identified. For two of the three bands, the transition quadrupole moments were extracted, herewith quantifying the deformation at high spin. The results have been compared with shell-model and cranked Nilsson-Strutinsky calculations. Despite the Z = 28 shell closure and the approach to the purported N = 40 subshell, the 63 Ni isotope is able to sustain collective excitations at moderate and high spin.

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Thoroughγ-ray and particle decay investigations ofNi58

Cited by 30 publications

References 37 publications

Investigating the γ decay of Ni65 from particle- γ coincidence data

Investigating the γ decay of Ni65 from particle- γ coincidence data

Comparative study of rotational bands in theA≈60mass region: Modification of Nilsson parameters

Single-particle and collective excitations in63Ni

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