Spectroscopy of neutron-rich Ni isotopes produced in 208Pb + 64Ni collisions

Pawłat, T.; Broda, R.; Królas, W.; Maj, A.; Ziębliński, M.; Grawe, H.; Schubart, R.; Maier, K. H.; Heese, J.; Kluge, H.; Schramm, Michael

doi:10.1016/0375-9474(94)90247-x

Cited by 64 publications

(81 citation statements)

References 20 publications

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“…The population from a 3 − level, however, which was not observed in the present study but established by Ref. [15], rules out 0 + . Nonetheless, a 0 + doublet may be present within ±15 keV.…”

Section: B Spin and Parity Assignmentscontrasting

confidence: 53%

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

et al. 2012

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The 64 Co β-decay feeding levels in the well-studied 64 Ni nucleus were investigated. Whereas the previously known 64 Co decay scheme merely contained 2 γ rays, the decay scheme established in this work contains 18, of which 5 are observed in this work and 6 were previously observed in an (n,γ ) study but not placed in the 64 Ni level scheme. Surprisingly, one additional level-placed at an excitation energy of 3578.7 keV-could be determined. The observed β-decay paths involve allowed νf 5/2 → πf 7/2 and νp 1/2 → πp 3/2 transitions. Three strongly fed levels around 4 MeV are interpreted to possess possible proton-intruder character.

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Section: B Spin and Parity Assignmentscontrasting

confidence: 53%

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

et al. 2012

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“…10 and an overview of the extracted spectroscopic information is given in Table III, along with information from previous experiments [26,[29][30][31][32][33]35]. States compatible with an transfer between 0 and 4 have been observed.…”

Section: Resultsmentioning

confidence: 95%

“…Data from β decay provided tentative spin assignments and proposed configurations for the lowest excited states up to and including the 9/2 + isomer [29]. Deep inelastic and multinucleon transfer reactions identified the position of higher-lying excited states [30][31][32][33] and the spins of the first three states was fixed [31,33]. In the most recent deep-inelastic study in Ref.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of theNi66(d,p) Ni67
Diriken¹,
Raabe²,
Eberth³
et al. 2015
Phys. Rev. C
9
1
5
0
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The quasi-SU(3) sequence of the positive parity νg 9/2 ,d 5/2 ,s 1/2 orbitals above the N = 40 shell gap are assumed to induce strong quadrupole collectivity in the neutron-rich Fe (Z = 26) and Cr (Z = 24) isotopes below the nickel region. In this paper the position and strength of these single-particle orbitals are characterized in the neighborhood of 68 Ni (Z = 28, N = 40) through the 66 Ni(d,p) 67 Ni one-neutron transfer reaction at 2.95 MeV/nucleon in inverse kinematics, performed at the REX-ISOLDE facility in CERN. A combination of the Miniball γ -array and T-REX particle-detection setup was used and a delayed coincidence technique was employed to investigate the 13.3-μs isomer at 1007 keV in 67 Ni. Excited states up to an excitation energy of 5.8 MeV have been populated. Feeding of the νg 9/2 (1007 keV) and νd 5/2 (2207 keV and 3277 keV) positive-parity neutron states and negative parity (νpf ) states have been observed at low excitation energy. The extracted relative spectroscopic factors, based on a distorted-wave Born approximation analysis, show that the νd 5/2 single-particle strength is mostly split over these two excited states. The results are also compared to the distribution of the proton single-particle strength in the 90 Zr region (Z = 40,N = 50).

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“…Experimentally, -decay properties of N=28 nuclei as 45 Cl, 44 Further experimental studies has to be achieved in order to prove unambiguously this shape co-existence phenomenon, through the detection of -lines connecting di erent shapes.…”

Section: The N=28 Shell-closurementioning

confidence: 99%

Gamma spectroscopy of nuclei far from stability

Sorlin¹

2001

Nuclear Physics A

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The focus of the present review is the study of neutron-rich medium-mass nuclei around major shells or subshells N=20,28 or 40. Coulomb excitation of secondary beams and in-beam spectroscopy study using the fragmentation of a stable beam have brought a wealth of informations concerning the behaviour of the closed shells when nuclei contain large neutron excesses. Pionneering experiments in this eld are presented with special emphasis on the work achieved at the GANIL accelerator.

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Spectroscopy of neutron-rich Ni isotopes produced in 208Pb + 64Ni collisions

Cited by 64 publications

References 20 publications

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

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

Experimental study of theNi66(d,p) Ni67
Diriken¹,
Raabe²,
Eberth³
et al. 2015
Phys. Rev. C
9
1
5
0
View full text Add to dashboard Cite

Gamma spectroscopy of nuclei far from stability

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Spectroscopy of neutron-rich Ni isotopes produced in 208Pb + 64Ni collisions

Cited by 64 publications

References 20 publications

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

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

Experimental study of theNi66(d,p) Ni67Diriken1, Raabe2, Eberth3 et al. 2015Phys. Rev. C9150View full textAdd to dashboardCite

Gamma spectroscopy of nuclei far from stability

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About

Experimental study of theNi66(d,p) Ni67
Diriken¹,
Raabe²,
Eberth³
et al. 2015
Phys. Rev. C
9
1
5
0
View full text Add to dashboard Cite