Gamow-Teller decay population of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math>Ni levels in the decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mn>1</mml:mn><mml:mo>+</mml:mo></mml:msup></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>64</mml:mn></mml:msup></mml:math>Co

Pauwels, D.; Radulov, D.; Walters, W. B.; Darby, I. G.; Witte, H. De; Diriken, J.; Fedorov, D. V.; Fedosseev, V. N.; Fraile, L. M.; Huyse, M.; Köster, U.; Marsh, B. A.; Popescu, L.; Seliverstov, M. D.; Sjödin, A. M.; Bergh, P. Van den; Walle, J. Van de; Duppen, P. Van; Venhart, M.; Wimmer, K.

doi:10.1103/physrevc.86.064318

Cited by 13 publications

(7 citation statements)

References 15 publications

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“…The ground state of 64 Fe β decays to 64 Co, which then decays to 64 Ni. In 64 Ni the strongest γ transition is the 1345.8-keV line, which represents 7.54 % of the total decay intensity [32]. We observe a transition at 1345.1 keV with a relative intensity of 1.3(1).…”

Section: E Absolute β and γ Intensitiesmentioning

confidence: 82%

β−decay of65Mn to65Fe

et al. 2013

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The low-energy structure of 65 Fe has been studied by means of γ and fast-timing spectroscopy at the ISOLDE facility, CERN. A level scheme of 65 Fe populated following the β − decay of 65 Mn was established for the first time. It includes 41 levels and 85 transitions. The excitation energy of the β-decaying isomer in 65 Fe has been precisely determined at 393.7(2) keV. The β-delayed neutron emission branch was measured as P n = 7.9(12)%, which cannot be reconciled with the previously reported value of 21.0(5)%. Four γ rays and four excited states in 64 Fe were identified as being populated following the β-n decay. Four lifetimes and five lifetime limits in the subnanosecond range have been measured using the advanced time-delayed βγ γ (t) method. The level scheme is compared with shell-model calculations. Tentative spin and parity assignments are proposed based on the observed transition rates, the calculations, and the systematics of the region.

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Section: E Absolute β and γ Intensitiesmentioning

confidence: 82%

β−decay of65Mn to65Fe

et al. 2013

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“…Prior to this work, two excited 0 þ states had been identified in 64 Ni, at 2867 and 3026 keV, following β-decay and ðt; pÞ-reaction studies [30,31]. These levels were subsequently confirmed in deep-inelastic reaction measurements [32], and their γ decay to the 1346-keV 2 þ…”

mentioning

confidence: 85%

“…The 0 þ 4 state at 3463 keV is of particular interest; it was observed earlier with tentative (2 þ=− , 3 − ) [32] and (0 þ , 1, 2, 3 − ) spin-parity assignments [33], but is firmly assigned here. It should be emphasized that this level is not populated in 64 Co β decay [30], in contrast to all other 0 þ states, up to 0 þ 6 , which are fed in this process. This observation already points to a marked difference in structure for this excitation, and is reminiscent of that occurring in 66 Ni [23], where the prolate-deformed 0 þ 4 state at 2974 keV was also the only 0 þ excitation not fed in the β decay of the spherical 66 Co ground state [40].…”

mentioning

confidence: 94%

Shape Coexistence at Zero Spin in Ni64 Driven by the Monopole Tensor Interaction

Mărginean¹,

Little²,

Tsunoda³

et al. 2020

Phys. Rev. Lett.

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“…The details on the experimental conditions are published in Refs. [46][47][48][49]. Here we report only the essential information.…”

Section: Experimental Setup and Analysismentioning

confidence: 99%

β− decay study of the Mn66−Fe66−Co
Stryjczyk
¹
,
Tsunoda
²
,
Darby
³

et al. 2018
Phys. Rev. C
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17
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Background: Shell evolution can impact the structure of the nuclei and lead to effects such as shape coexistence. The nuclei around 68 Ni represent an excellent study case, however, spectroscopic information of the neutron-rich, Z < 28 nuclei is limited. Purpose: The goal is to measure γ-ray transitions in 66 Fe, 66 Co, and 66 Ni populated in the β − decay of 66 Mn to determine absolute β feedings and relative γ-decay probabilities and to compare the results with Monte Carlo shell model calculations in order to study the influence of the relevant single neutron and proton orbital occupancies around Z = 28 and N = 40. Method: The low-energy structures of 65,66 Fe, 66 Co, and 66 Ni were studied in the β − decay of 66 Mn produced at ISOLDE, CERN. The beam was purified by means of laser resonance ionization and mass separation. The β and γ events detected by three plastic scintillators and two MiniBall cluster germanium detectors, respectively, were correlated in time to build the low-energy excitation schemes and to determine the β-decay half-lives of the nuclei. Results: The relative small β-decay ground state feeding of 66 Fe obtained in this work is at variant to the earlier studies. Spin and parity 1 + was assigned to the 66 Co ground state based on the strong ground-state feeding in the decay of 66 Fe as well as in the decay of 66 Co. Experimental log(f t) values, γ-ray de-excitation patterns, and energies of excited states were compared to Monte Carlo shell model calculations. Based on this comparison, spin and parity assignments for the selected number of low-lying states in the 66 Mn to 66 Ni chain were proposed. Conclusions: The β-decay chain starting 66 Mn toward 66 Ni, crossing N = 40, evolves from deformed nuclei to sphericity. The β-decay population of a selected number of 0 + and 2 + states in 66 Ni, which is understood within shape coexistence framework of Monte Carlo shell model calculations, reveals the crucial role of the neutron 0g 9/2 shell and proton excitations across the Z = 28 gap.

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Gamow-Teller decay population of64Ni levels in the decay of1+64Co

Cited by 13 publications

References 15 publications

β−decay of65Mn to65Fe

β−decay of65Mn to65Fe

Shape Coexistence at Zero Spin in Ni64 Driven by the Monopole Tensor Interaction

β− decay study of the Mn66−Fe66−Co
Stryjczyk
¹
,
Tsunoda
²
,
Darby
³

et al. 2018
Phys. Rev. C
Self Cite
17
1
15
0
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Gamow-Teller decay population of64Ni levels in the decay of1+64Co

Cited by 13 publications

References 15 publications

β−decay of65Mn to65Fe

β−decay of65Mn to65Fe

Shape Coexistence at Zero Spin in Ni64 Driven by the Monopole Tensor Interaction

β− decay study of the Mn66−Fe66−CoStryjczyk1, Tsunoda2, Darby3 et al. 2018Phys. Rev. CSelf Cite171150View full textAdd to dashboardCite

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β− decay study of the Mn66−Fe66−Co
Stryjczyk
¹
,
Tsunoda
²
,
Darby
³

et al. 2018
Phys. Rev. C
Self Cite
17
1
15
0
View full text Add to dashboard Cite