Isomeric states in neutron-deficient<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>A</mml:mi><mml:mo>~</mml:mo><mml:mn>80</mml:mn><mml:mtext>–</mml:mtext><mml:mn>90</mml:mn></mml:mrow></mml:math>nuclei populated in the fragmentation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Ag</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>107</mml:mn></mml:mrow></mml:mmultiscripts></mml:

Garnsworthy, A. B.; Regan, P. H.; Piétri, S.; Sun, Y.; Fang, Xu; Rudolph, Dirk; Górska, M.; Cáceres, L.; Podolyák, Zs.; Steer, S. J.; Hoischen, R.; Heinz, A.; Becker, F.; Bednarczyk, P.; Doornenbal, P.; Geißel, H.; Gerl, J.; Grawe, H.; Grȩbosz, J.; Kelić, A.; Kojouharov, I.; Kurz, N.; Montes, F.; Prokopwicz, W; Saito, T.; Schaffner, H.; Tachenov, S.; Werner‐Malento, E.; Wollersheim, H. J.; Benzoni, G.; Blank, Β.; Brandau, C.; Bruce, A. M.; Camera, F.; Catford, W. N.; Cullen, I. J.; Dombrádi, Zs.; Estévez, Emma; Gelletly, W.; Ilie, G.; Jolie, J.; Jones, G. A.; Jungclaus, A.; Kmiecik, M.; Kondev, F. G.; Kurtukian‐Nieto, T.; Lalkovski, S.; Liu, Z.; Maj, A.; Myalski, S.; Pfützner, M.; Schwertel, S.; Shizuma, T.; Simons, A. J.; Walker, P. M.; Wieland, O.

doi:10.1103/physrevc.80.064303

Cited by 32 publications

(8 citation statements)

References 55 publications

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“…In all four cases, the half-lives determined from this experiment are smaller than those in Ref. [47], but consistent with other literature values [10,21,[48][49][50][51][52]. One publication [53], reports consistently longer half-lives for these isomers, possibly pointing towards some systematic effect in that analysis.…”

Section: A Half-lives and Transition Strengths Of The Known Isomerssupporting

confidence: 88%

Properties of γ -decaying isomers and isomeric ratios in the Sn100 region

Park¹,

Krücken²,

Lubos³

et al. 2017

Phys. Rev. C

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Half-lives and energies of γ rays emitted in the decay of isomeric states of nuclei in the vicinity of the doubly magic 100 Sn were measured in a decay spectroscopy experiment at Rikagaku Kenkyusho (The Institute of Physical and Chemical Research) of Japan Nishina Center. The measured half-lives, some with improved precision, are consistent with literature values. Three new results include a 55-keV E2 γ ray from a new (4 + ) isomer with T 1/2 = 0.23(6) μs in 92 Rh, a 44-keV E2 γ ray from the (15 + ) isomer in 96 Ag, and T 1/2 (6 + ) = 13(2) ns in 98 Cd. Shell-model calculations of electromagnetic transition strengths in the (p 1/2 ,g 9/2 ) model space agree with the experimental results. In addition, experimental isomeric ratios were compared to the theoretical predictions derived with an abrasion-ablation model and the sharp cutoff model. The results agreed within a factor of 2 for most isomers. From the nonobservation of time-delayed γ rays in 100 Sn, new constraints on the T 1/2 , γ -ray energy, and internal conversion coefficients are proposed for the hypothetical isomer in 100 Sn.

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Section: A Half-lives and Transition Strengths Of The Known Isomerssupporting

confidence: 88%

Properties of γ -decaying isomers and isomeric ratios in the Sn100 region

Park¹,

Krücken²,

Lubos³

et al. 2017

Phys. Rev. C

Self Cite

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“…The excitation energy measured in this work, E x = 70.4(31) keV, is lower than the observed 95-keV transition energy for the 4 + → 2 + (or 2 + → 4 + ) transition in Ref. [62]. Therefore, either the 4 + or 2 + state should lie above the isomeric state observed in this work.…”

Section: B Isomeric State In 88 Tccontrasting

confidence: 68%

“…Option (i) is not plausible since the 165-keV E 2 transition from 4 + to 6 + should be faster and more intense than the 95-keV transition observed clearly in Ref. [62], and therefore should have been detected in the earlier works [60,62]. The fact that no other γ rays than the 95-keV transition was observed from the 146(12)-ns isomeric state in Ref.…”

Section: B Isomeric State In 88 Tcmentioning

confidence: 93%

“…The β-decay study of Odahara et al [61] suggested spins of 3 + and 6 + for the detected states with half-lives of 5.8(2) and 6.4(8) s, respectively. The isomeric states of 88 Tc were further studied by Garnsworthy et al [62]. Based on the observed 95-keV transition, which they assign tentatively as 4 + → 2 + , and by comparing with the shell-model calculations using the Gross-Frenkel interaction [63] in a 1g 9/2 -2p 1/2 model space, they suggest that the (5 + , 6 + , 7 + ) state listed as the ground state in Ref.…”

Section: B Isomeric State In 88 Tcmentioning

confidence: 99%

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High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL

et al. 2019

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An upgraded ion-guide system for the production of neutron-deficient isotopes with heavy-ion beams has been commissioned at the IGISOL facility with an 36 Ar beam on a nat Ni target. It was used together with the JYFLTRAP double Penning trap to measure the masses of 82 Zr, 84 Nb, 86 Mo, 88 Tc, and 89 Ru ground states and the isomeric state 88 Tc m. Of these, 89 Ru and 88 Tc m were measured for the first time. The precision of measurements of 82 Zr, 84 Nb, and 88 Tc was significantly improved. The literature value for 86 Mo was verified. The measured states in 88 Tc were compared to shell-model calculations and additional constraints on the spins and level scheme were obtained. The masses of 82 Mo and 86 Ru have been predicted using the measured masses of their mirror partners and theoretical mirror displacement energies, resulting in more tightly bound nuclei with smaller atomic mass uncertainties than reported in the literature.

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“…88m Tc with J π = (2 + ) is the final state proposed to be populated by the E 2 isomeric decay from the (4 + ) state with T 1/2 (4 + ) = 146 (12) ns and E γ = 95 keV [68]. SM calculations in this work predict this (4 + ) state as an isomer with T 1/2 = 53 ns and E x = 142 keV above the 2 + state, in good agreement with the experimental values.…”

Section: F β-γ Spectroscopy Of 88 Rumentioning

confidence: 99%

New and comprehensive β - and βp -decay spectroscopy results in the vicinity of Sn100

Park¹,

Krücken²,

Lubos³

et al. 2019

Phys. Rev. C

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A decay spectroscopy experiment on proton-rich nuclei in the vicinity of the doubly magic 100 Sn was carried out at RIKEN Nishina Center. More than 20 nuclei with 43 Z 50 and N 51, produced by fragmentation reactions were investigated via analyses of β-decay, β p-decay, and subsequent γ-ray data. Owing to higher statistics, the precision on the half-lives of many of the ground states and isomers was improved. β-decay endpoint energies of 11 states in 8 nuclei were measured for the first time, and the corresponding Q EC and excitation energies were generally consistent with various mass models. Many β-delayed proton emission branching ratios were measured either for the first time or with higher precision compared to literature values, and some of them differed by more than 2σ. Many of the large discrepancies were associated with nuclei with long-lived isomeric states, highlighting large systematic uncertainties involved in these measurements. Twenty-five new γ rays were observed, and ten new states are proposed with unambiguous excitation energies, spins, and parities. Most of the energies of the excited states were consistent within 300 keV or 20%, whichever was greater, compared to shell model predictions in the proton/neutron (p 1/2 , g 9/2) model space assuming a 76 Sr core. A signature of a new (1/2 −) isomer in 97 Cd with T 1/2 = 0.73(7) s was found, in good agreement with shell model predictions.

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Isomeric states in neutron-deficientA~80–90nuclei populated in the fragmentation ofAg107

Cited by 32 publications

References 55 publications

Properties of γ -decaying isomers and isomeric ratios in the Sn100 region

Properties of γ -decaying isomers and isomeric ratios in the Sn100 region

High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL

New and comprehensive β - and βp -decay spectroscopy results in the vicinity of Sn100

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