High-spin states and lifetimes in 
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 and shell-model interpretation in the 
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 space

Aydin, S.; Ionescu‐Bujor, M.; Gavrilov, G.; Dimitrov, B.; Lenzi, S. M.; Recchia, F.; Tonev, D.; Kavillioglu, F.; Pavlov, P. V.; Bazzacco, D.; Bizzeti, P. G.; Bizzeti‐Sona, A. M.; Angelis, G. de; Deloncle, I.; Farnea, E.; Gadea, A.; Gottardo, A.; Goutev, N.; Haas, F.; Hüyük, T.; Laftchiev, H.; Lunardi, S.; Marinov, Tz K; Mengoni, D.; Menegazzo, R.; Michelagnoli, C.; Napoli, D. R.; Petkov, P.; Şahin, E.; Singh, Pardeep; Stefanova, E. A.; Ur, C. A.; Valiente-Dobón, J.J.; Yavahchova, M. S.

doi:10.1103/physrevc.96.024315

Cited by 5 publications

(4 citation statements)

References 36 publications

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“…The wave function of the ground state has been calculated with 16 O core, where a good agreement has been found with experimental data for a positiveparity state using USDB as in [24]. The comparisons between experimental and calculated result are shown in Fig.…”

Section: Energy Levelssupporting

confidence: 55%

“…Studying the excited states of this nucleus with the use of the shell model clarifies the various configurations of nucleons in the main valence shell for the positive-parity states, and the intruder excitations of the negative-parity states with crossshell configurations in or/and shells. The negative-parity states, named intruder states, accrue due to the promotion of one nucleon from the to shell for nuclei near 16 O, or from to shell for nuclei close to 40 Ca [10]. 24 Mg nucleus is po-sitioned in the middle of the shell, where there is a competition between the two types of transitions.…”

Section: Introductionmentioning

confidence: 99%

“…The PSDPF interaction [13] was developed to describe the positiveand negative-parity states in -shell nuclei within the full --model space, allowing nucleons to move from to or/and from to shells with a 4 He core. Recently, many shell model calculations have shown the remarkable results using this interaction [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

2021

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The negative-parity states of 24Mg nucleus are investigated within the shell model. We are based on the calculations of energy levels, total squared form factors, and transition probability using the p-sd-pf (PSDPF) Hamiltonian in a large model space (0 + 1) hW. The comparison between the experimental and theoretical states showed a good agreement within a truncated model space. The PSDPF-based calculations successfully reproduced the data on the total squared form factors and transition probabilities of the negative-parity states in 24Mg nucleus. These quantities depend on the one-body density matrix elements that are obtained from the PSDPF Hamiltonian. The wave functions of radial one-particle matrix elements calculated with the harmonic-oscillator potential are suitable to predict experimental data by changing the center-of-mass corrections.

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Section: Energy Levelssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

2021

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“…For example, states of 35 S have recently been studied to spin (21/2 h) through the use of the 26 Mg( 18 O, 2α1n) 35 S reaction; in this case the physics interest centered around a comparison of the experimental level scheme with that predicted in state-of-the-art large-scale shell-model calculations using the SDPF_ MSD4 interaction [18]. Similarly, high-spin states and lifetimes in 33 S have been studied using the 24 Mg( 14 N, αp) reaction [19] and the results interpreted using shell-model calculations in the sd-f p space. On a completely different physics topic, the fundamental property of isospin symmetry of the nuclear interaction has been studied in the high-spin spectroscopy of the neutron-deficient 31 S nucleus and its mirror nucleus 31 P [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Lifetime measurements of states of S35 , S36 ,
Grocutt¹,
Chapman²,
Haas³
et al. 2022
Phys. Rev. C
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Lifetime measurements of N≃20 phosphorus isotopes using the AGATA γ -ray tracking spectrometer

Grocutt¹,

Chapman²,

Haas³

et al. 2019

Phys. Rev. C

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Lifetime measurements of N 20 phosphorus isotopes using the AGATA -ray tracking spectrometer Grocutt, L.; Chapman, R.; Bouhelal, M.; Haas, F.; Goasduff, A.; Smith, J.F. ; Courtin, S.; Bazzacco, D.; Braunroth, T.; Capponi, L.; Corradi, L.; Derkx, X.; Desesquelles, P.; Doncel, M.; Fioretto, E.; Gottardo, A.; Liberati, V.; Melon, B.; Mengoni, D.; Michelagnoli, C.; Mijatovi, T. ; Modamio, V.; Montagnoli, G.; Montanari, D.; Mulholland, K.F. ; Napoli, D.R.; Petrache, C.; Pipidis, A.; Recchia, F.; Sahin, E.; Singh, P.P.; Stefanini, A.M.; Szilner, S.; Valiente-Dobón, J.J.Lifetimes of excited states of the phosphorus isotopes 33,34,35,36 15 P have been measured using the differential recoil distance method. The isotopes of phosphorus were populated in binary grazing reactions initiated by a beam of 36 S ions of energy 225 MeV incident on a thin 208 Pb target which was mounted in the Cologne plunger apparatus. The combination of the PRISMA magnetic spectrometer and an early implementation of the AGATA γ-ray tracking array was used to detect γ rays in coincidence with projectile-like nuclear species. Lifetime measurements of populated states were measured within the range from about 1 to 100 ps. The number of states for which lifetime measurements were possible was limited by statistics. For 33 P, lifetime limits were determined for the first 3/2 + and 5/2 + states at 1431 keV and 1848 keV, respectively; the results are compared with previous published lifetime values. The lifetime of the first 2 + state of 34 P at 429 keV was determined and compared with earlier measurements. For 35 P, the states for which lifetimes, or lifetime limits, were determined were those at 2386, 3860, 4101, and 4493 keV, with J π values of 3/2 + , 5/2 + , 7/21 − , and 7/22 − , respectively. There have been no previous published lifetimes for states in this nucleus. A lifetime was measured for the stretched π(1f 7/2 )⊗ν(1f 7/2 ) J π = (7 + ) state of 36 P at 5212 keV and a lifetime limit was established for the stretched π(1d 3/2 )⊗ν(1f 7/2 ) J π = (5 − ) state at 2030 keV. There are no previously published lifetimes for states of 36 P. Measured lifetime values were compared with the results of state-of-the-art shell-model calculations based on the PSDPF effective interaction. In addition, measured branching ratios, published mixing ratios, and electromagnetic transition rates, where available, have been compared with shell-model values. In general, there is good agreement between experiment and shell model; however there is evidence that the shell-model values of the M1 transition rates for the 3/21 + → 1/2 + (ground state) and 5/21 + → 3/21 + transitions in 33 P underestimate the experimental values by a factor of between 5 and 10. In 35 P there are some disagreements between experimental and shell-model values of branching ratios for the first and second excited 7/2 − states. In particular, there is a serious disagreement for the decay characteristics of the second 7/2 − state at 4493 keV, for which the shell-model counterpart lies at 4754 keV....

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High-spin states and lifetimes in S33 and shell-model interpretation in the sd−fp space

Cited by 5 publications

References 36 publications

Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

Lifetime measurements of states of S35 , S36 ,
Grocutt¹,
Chapman²,
Haas³
et al. 2022
Phys. Rev. C
Self Cite
4
0
0
0
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Lifetime measurements of N≃20 phosphorus isotopes using the AGATA γ -ray tracking spectrometer

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High-spin states and lifetimes in S33 and shell-model interpretation in the sd−fp space

Cited by 5 publications

References 36 publications

Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

Large Scale Shell Model Calculations of the Negative-Parity States Structure in 24Mg Nucleus

Lifetime measurements of states of S35 , S36 , Grocutt1, Chapman2, Haas3 et al. 2022Phys. Rev. CSelf Cite4000View full textAdd to dashboardCite

Lifetime measurements of N≃20 phosphorus isotopes using the AGATA γ -ray tracking spectrometer

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Lifetime measurements of states of S35 , S36 ,
Grocutt¹,
Chapman²,
Haas³
et al. 2022
Phys. Rev. C
Self Cite
4
0
0
0
View full text Add to dashboard Cite