Isomer-scope: A new instrument for in-beam γ-ray spectroscopy through deep inelastic collisions

Ishii, T.; Itoh, Mitsuomi; Ishii, M.; Makishima, Akio; Ogawa, Masahiro; Hossain, I.; Hayakawa, Takehito; Kohno, Toshiyuki

doi:10.1016/s0168-9002(97)00720-1

Cited by 39 publications

(13 citation statements)

References 12 publications

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“…Its half-life was obtained as t 1/2 = 10(1) ns, in agreement with Ref. [5,14], but this value differs considerably from the value adopted in Ref. [15], t 1/2 = 3.33(21) ns.…”

Section: Magnetic Field Determinationsupporting

confidence: 87%

g-factor of the 9/2+ isomeric state in 65Ni from transfer reaction

et al. 2006

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“…Its half-life was obtained as t 1/2 = 10(1) ns, in agreement with Ref. [5,14], but this value differs considerably from the value adopted in Ref. [15], t 1/2 = 3.33(21) ns.…”

Section: Magnetic Field Determinationsupporting

confidence: 87%

g-factor of the 9/2+ isomeric state in 65Ni from transfer reaction

et al. 2006

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“…10.4). In another approach, Ishii et al [339] have demonstrated the development of beams of isomeric projectile-like fragments from deepinelastic reactions, for studing the products themselves. Other interesting prospects reside with producing high-spin isomers in relatively heavy nuclei (either with fusionevaporation or deep-inelastic reactions) and using these as samples for (self) excitation or even as beams to instigate secondary reactions.…”

Section: Isomer Beamsmentioning

confidence: 99%

Review of metastable states in heavy nuclei

2016

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Abstract.The structure of nuclear isomeric states is reviewed in the context of their role in contemporary nuclear physics research. Emphasis is given to high-spin isomers in heavy nuclei, with A 150. The possibility to exploit isomers to study some of the most exotic nuclei is a recurring theme. In spherical nuclei, the role of octupole collectivity is discussed in detail, while in deformed nuclei the limitations of the K quantum number are addressed. Isomer targets and isomer beams are considered, along with applications related to energy storage, astrophysics, medicine, and experimental advances.

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“…The scheme of excited states in 66 Ni (Fig. 13) was built by setting the energy gates on the previously known γ -ray transitions [11,35,41,44,69,[73][74][75][76][77][78] (Fig. 14).…”

Section: Decay Of 66 Comentioning

confidence: 99%

“…The nickel isotopic chain with a magic number of protons (Z = 28) is an excellent study case to test the nuclear shell model. It starts at 48 Ni, which decays through a recently discovered 2p emission channel [1][2][3], goes through the doubly magic N = Z = 28 56 Ni, and ends beyond 78 Ni, whose region has been studied extensively [4][5][6][7][8][9][10] to check the persistence of the magic numbers in nuclei with an extreme neutronto-proton ratio. The region of 68 Ni around N = 40 is of particular interest.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2018
Phys. Rev. C
17
1
15
0
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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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Isomer-scope: A new instrument for in-beam γ-ray spectroscopy through deep inelastic collisions

Cited by 39 publications

References 12 publications

g-factor of the 9/2+ isomeric state in 65Ni from transfer reaction

g-factor of the 9/2+ isomeric state in 65Ni from transfer reaction

Review of metastable states in heavy nuclei

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

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

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Isomer-scope: A new instrument for in-beam γ-ray spectroscopy through deep inelastic collisions

Cited by 39 publications

References 12 publications

g-factor of the 9/2+ isomeric state in 65Ni from transfer reaction

g-factor of the 9/2+ isomeric state in 65Ni from transfer reaction

Review of metastable states in heavy nuclei

β− decay study of the Mn66−Fe66−CoStryjczyk1, Tsunoda2, Darby3 et al. 2018Phys. Rev. C171150View 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
17
1
15
0
View full text Add to dashboard Cite