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Nummela, S.; Baumann, P.; Caurier, E.; Dessagne, Ph.; Jokinen, A.; Knipper, A.; Scornet, G. Le; Miehé, Ch.; Nowacki, F.; Oinonen, M.; Radivojevic, Z.; Ramdhane, M.; Walter, G.; Äystö, J.

doi:10.1103/physrevc.63.044316

Cited by 166 publications

(118 citation statements)

References 41 publications

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“…A ground-state spin of 5/2 + has been assumed from shell model calculations and the systematics of neighboring nuclei, considering the fact that the proton hole in the d 5/2 orbital is responsible for the ground-state spin and parity, while two valence neutrons in the f 7/2 orbital remain as spectators and do not contribute to the ground-state spin. This spin and parity has been used to explain the data of β decay [19] as well as the knockout experiment [29]. A number of excited states of this nucleus have been populated [23] by proton knockout, and the states have been interpreted in the light of the SDPF-MU interaction [41].…”

Section: Discussionmentioning

confidence: 99%

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Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Chakraborty¹,

Pramanik²,

Aumann³

et al. 2017

Phys. Rev. C

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The ground-state configuration of 35 Al has been studied via Coulomb dissociation (CD) using the LAND-FRS setup (GSI, Darmstadt) at a relativistic energy of ∼403 MeV/nucleon. The measured inclusive differential CD cross section for 35 Al, integrated up to 5.0 MeV relative energy between the 34 Al core and the neutron using a Pb target, is 78(13) mb. The exclusive measured CD cross section that populates various excited states of 34 Al is 29(7) mb. The differential CD cross section of 35 Al → 34 Al + n has been interpreted in the light of a direct breakup model, and it suggests that the possible ground-state spin and parity of 35 Al could be, tentatively, 1/2 + or 3/2 + or 5/2 + . The valence neutrons, in the ground state of 35 Al, may occupy a combination of either l = 3,0 or l = 1,2 orbitals coupled with the 34 Al core in the ground and isomeric state(s), respectively. This hints of a particle-hole configuration of the neutron across the magic shell gaps at N = 20,28 which suggests narrowing the magic shell gap. If the 5/2 + is the ground-state spin-parity of 35 Al as suggested in the literature, then the major ground-state configuration of 35 Al is a combination of 34 Al(g.s.; 4 − ) ⊗ ν p 3/2 and 34 Al(isomer; 1 + ) ⊗ ν d 3/2 states. The result from this experiment has been compared with that from a previous knockout measurement and a calculation using the SDPF-M interaction.

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Section: Discussionmentioning

confidence: 99%

“…35 Al, especially, has the least experimental information available in the literature. The β-decay branch of 35 Al was studied at ISOLDE [19,20] and GANIL [21]. Some deexcited γ rays of 35 Al have been reported [22,23].…”

Section: Introductionmentioning

confidence: 99%

Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Chakraborty¹,

Pramanik²,

Aumann³

et al. 2017

Phys. Rev. C

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“…For our study we adopt the one of Ref. [14]. This interaction contains three parts: the USD interaction for the sd-shell [3], the KB' matrix elements for the pf shell [15] and the G-matrix of Kahana, Lee and Scott for the cross-shell matrix elements [16].…”

Section: Truncated Shell Model Studies In the Complete Sdpf Shellsmentioning

confidence: 99%

“…There have been several attempts to derive a suitable effective interaction for the sdpf model space (see, for example [12,13,14] and references therein). For our study we adopt the one of Ref.…”

Section: Truncated Shell Model Studies In the Complete Sdpf Shellsmentioning

confidence: 99%

“…This interaction contains three parts: the USD interaction for the sd-shell [3], the KB' matrix elements for the pf shell [15] and the G-matrix of Kahana, Lee and Scott for the cross-shell matrix elements [16]. The f 7/2 d 3/2 , f 7/2 s 1/2 , p 3/2 s 1/2 and p 3/2 d 3/2 monopole terms have been adjusted to some recent experimental data [14]. We note hat there is a problem with spurious center-of-mass (COM) excitations for the chosen configuration space.…”

Section: Truncated Shell Model Studies In the Complete Sdpf Shellsmentioning

confidence: 99%

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Magnetic dipole probes of the sd and pf shell crossing in the 36,38Ar isotopes

Lisetskiy

Caurier²,

Langanke

et al. 2007

Nuclear Physics A

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We have calculated the M1 strength distributions in the 36,38 Ar isotopes within large-scale shell model studies which consider valence nucleons in the sd and pf shells. While the M1 strength in 36 Ar is well reproduced within the sd shell, the experimentally observed strong fragmentation of the M1 strength in 38 Ar requires configuration mixing between the sd and the pf shells adding to our understanding of correlations across the N=20 shell gap.

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Study of the N = 28 shell closure in the Ar isotopic chain

Gaudefroy¹,

Sorlin²,

Beaumel³

et al.

The 2nd International Conference on Nuclear Physics in Astrophysics

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Abstract. The structure of the neutron-rich nucleus 47 Ar has been investigated through the d( 46 Ar, 47 Ar)p transfer reaction. The radioactive beam of 46 Ar at 10 A · MeV was provided by the SPIRAL facility at GANIL. The protons corresponding to a neutron pick-up on bound or unbound states mechanism in 47 Ar nuclei were detected at backward angles by the position-sensitive Si array-detector MUST. The transferlike ejectiles were detected in the SPEG spectrometer. Level scheme, spin assignments and spectroscopic factors have been deduced for 47 Ar and compared to shell model predictions. They suggest a slight erosion of the N = 28 shell gap from the weakening of the spin-orbit interaction arising from the f and p orbitals. These spectroscopic information are subsequently used to infer (n, γ) reaction rates in the Ar isotopic chain to understand the origin of the 48 Ca/ 46 Ca abnormal isotopic ratio observed in certain inclusions of meteorites.PACS. 21.10.Hw Spin, parity, and isobaric spin -21.10.Jx Spectroscopic factors -25.60.Je Transfer reactions -26.30.+k Nucleosynthesis in novae, supernovae and other explosive environments

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Spectroscopy of34,35Sibyβdecay:s

Cited by 166 publications

References 41 publications

Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Magnetic dipole probes of the sd and pf shell crossing in the 36,38Ar isotopes

Study of the N = 28 shell closure in the Ar isotopic chain

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