<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>β</mml:mi></mml:mrow></mml:math>-decay studies of the transitional nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Cu</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>75</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>and the structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscrip

Ilyushkin, S.; Winger, J. A.; Rykaczewski, K. P.; Gross, C. J.; Batchelder, J. C.; Cartegni, L.; Darby, I. G.; Grzywacz, R.; Hamilton, J. H.; Korgul, A.; Królas, W.; Liddick, S. N.; Mazzocchi, C.; Mendez, T.; Padgett, S.; Rajabali, Mustafa; Shapira, D.; Stracener, D. W.; Zganjar, E. F.

doi:10.1103/physrevc.83.014322

Cited by 16 publications

(7 citation statements)

References 28 publications

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“…The 908 and 145 keV transitions were not observed, which led the authors to the conclusion that the spin of the 78 Cu parent nucleus is most likely (4,5) − and may result from the coupling of the g 9/2 neutron hole to the p 3/2 or f 5/2 proton particle. While Van Roosbroeck et al [30] considered the possibility of a proton p 3/2 as the lowest proton state for the neutron-rich Z = 29 isotope 78 Cu, it was later established that for N > 46 the tensor interactions lower the πf 5/2 energy below the πp 3/2 energy [8][9][10]. Van Roosbroeck et al [30] also reported for the first time the β-delayed neutron transitions to excited states in 77 Zn.…”

Section: A Earlier Results Relevant For 78 Cu Decaymentioning

confidence: 99%

“…The experimental values are taken from Refs. [10] and [14], respectively. Calculations, which used the shell model (SM) [12] and the continuum quasiparticle random phase approximation (CQRPA), were performed for I π gs = 5/2 − of 77,79 Cu [13,15,16].…”

Section: β-Delayed Neutron Emission In the Decays Of 77 Cu And 79 mentioning

confidence: 99%

“…[6] and in earlier papers that the f 5/2 -f 7/2 proton-orbital splitting is reduced by 2 MeV going from N = 40 to N = 50. Moreover, the energy difference between p 3/2 -p 1/2 spin-orbit partners also gets smaller, which causes the crossing of the πf 5/2 and πp 3/2 orbitals at N = 46, 75 Cu [8][9][10][11][12]. The spectroscopy of N ∼ 50 nuclei near 78 Ni, with a fully occupied g 9/2 neutron shell, should help to evaluate the impact of these effects on nuclear properties.…”

Section: Introductionmentioning

confidence: 99%

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β-γandβ-delayed neutron-γdecay of neutron-rich copper isotopes

et al. 2012

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Theβ-decay properties of neutron-rich Cu isotopes produced in proton-induced fission of 238 U were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. The data were collected using high-resolution online mass separation, reacceleration, and digital β-γ spectroscopy methods. An improved decay scheme of N = 49 78 Cu and the first observation of N = 50 79 Cu β-delayed neutron decay followed by a gamma transition are reported. Spin and parity (5 − ) are deduced for 78gs Cu. The β-delayed neutron branching ratios (P βn ) for the 77 Cu and 79 Cu precursors are analyzed with the help of nuclear structure models.

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Section: A Earlier Results Relevant For 78 Cu Decaymentioning

confidence: 99%

Section: β-Delayed Neutron Emission In the Decays Of 77 Cu And 79 mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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β-γandβ-delayed neutron-γdecay of neutron-rich copper isotopes

et al. 2012

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“…The suppression of neutron emission has been observed in neutron beam experiments [5], as well as in β-delayed neutron emission studies [6][7][8]. More recently, this effect has also been reported in measurements using the surrogate method [9][10][11][12], and in studies of radioactive ion beam implantations with Clover-type γ-ray detection [13,14] and a total absorption spectrometer [15].…”

Section: Introductionmentioning

confidence: 84%

γ-ray decay from neutron-bound and unbound states inMo95and a novel technique for spin determination

et al. 2016

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The emission of γ rays from neutron-bound and neutron-unbound states in 95 Mo, populated in the 94 Mo(d,p) reaction, has been investigated. Charged particles and γ radiation were detected with arrays of annular silicon and Clover-type high-purity Germanium detectors, respectively. Utilizing proton-γ and proton-γ-γ coincidences, the 95 Mo level scheme was greatly enhanced with 102 new transitions and 43 new states. It agrees well with shell model calculations for excitation energies below ≈2 MeV. From proton-γ coincidence data, a new method for the determination of spins of discrete levels is proposed. The method exploits the suppression of high-angular momentum neutron emission from levels with high spins populated in the (d,p) reaction above the neutron separation energy. Spins for almost all 95 Mo levels below 2 MeV (and for a few levels above) have been determined with this method.

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“…In summary, the hfs of the ground and isomeric states [19,[44][45][46][47]. (b) Odd-mass N = 49 level systematics, partially adopted from Refs.…”

mentioning

confidence: 99%

Isomer shift and magnetic moment of the long-lived 1/2$^{+}$ isomer in $^{79}_{30}$Zn$_{49}$: signature of shape coexistence near $^{78}$Ni

Yang,

Wraith,

Xie

et al. 2016

Preprint

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Collinear laser spectroscopy has been performed on the 79 30 Zn49 isotope at ISOLDE-CERN. The existence of a long-lived isomer with a few hundred milliseconds half-life was confirmed, and the nuclear spins and moments of the ground and isomeric states in 79 Zn as well as the isomer shift were measured. From the observed hyperfine structures, spins I = 9/2 and I = 1/2 are firmly assigned to the ground and isomeric states. The magnetic moment µ ( 79 Zn) = −1.1866(10) µN, confirms the spin-parity 9/2 + with a νg −1 9/2 shell-model configuration, in excellent agreement with the prediction from large scale shell-model theories. The magnetic moment µ ( 79m Zn) = −1.0180( 12) µN supports a positive parity for the isomer, with a wave function dominated by a 2h-1p neutron excitation across the N = 50 shell gap. The large isomer shift reveals an increase of the intruder isomer mean square charge radius with respect to that of the ground state: δ r 2 c 79,79m = +0.204(6) fm 2 , providing first evidence of shape coexistence.

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β-decay studies of the transitional nucleusCu75and the structure of

Cited by 16 publications

References 28 publications

β-γandβ-delayed neutron-γdecay of neutron-rich copper isotopes

β-γandβ-delayed neutron-γdecay of neutron-rich copper isotopes

γ-ray decay from neutron-bound and unbound states inMo95and a novel technique for spin determination

Isomer shift and magnetic moment of the long-lived 1/2$^{+}$ isomer in $^{79}_{30}$Zn$_{49}$: signature of shape coexistence near $^{78}$Ni

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