<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>94</mml:mn><mml:mtext> </mml:mtext><mml:mi>β</mml:mi></mml:mrow></mml:math>
-Decay Half-Lives of Neutron-Rich 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Cs</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow><mml:mn>55</mml:mn></mml:mrow><mml:none /></mml:mmultiscripts></mml:mrow></mml:math>
 to 
<mml:math xmlns:mml="http://www.w3.org/1998/Ma

Wu, J.; Nishimura, S.; Lorusso, G.; Möller, P.; Ideguchi, E.; Regan, P.H.; Simpson, G. S.; Söderström, P.-A.; Walker, P. M.; Watanabe, H.; Xu, Z. Y.; Baba, H.; Browne, F.; Daido, R.; Doornenbal, P.; Fang, Y.; Fukuda, N.; Gey, G.; Isobe, T.; Korkulu, Z.; Lee, P. S.; Liu, J. J.; Li, Z.; Patel, Z.; Phong, V. H.; Rice, S.; Sakuraï, H.; Sinclair, L.; Sumikama, T.; Tanaka, M.; Yagi, A.; Ye, Y. L.; Yokoyama, R.; Zhang, G. X.; Ahn, D. S.; Alharbi, T.; Aoi, N.; Garrote, F. L. Bello; Benzoni, G.; Bruce, AM; Carroll, R.; Chae, K. Y.; Dombrádi, Zsolt; Estradé, A.; Gottardo, A.; Griffin, C. J.; Inabe, N.; Kameda, D.; Kanaoka, H.; Kojouharov, I.; Kondev, F. G.; Kubo, T.; Kubo, T.; Kurz, N.; Kuti, I.; Lalkovski, S.; Lane, G. J.; Lee, E. J.; Lokotko, T.; Lotay, G.; Moon, C.-B.; Murai, D.; Nıshıbata, H.; Nishizuka, I.; Niță, Cristina; Odahara, A.; Podolyák, Zs.; Roberts, O. J.; Schaffner, H.; Shand, C.; Shimizu, Y.; Suzuki, Hiroshi; Takeda, Hiroyuki; Taprogge, J.; Terashima, S.; Vajta, Zsolt; Yoshida, Shigeo

doi:10.1103/physrevlett.118.072701

Cited by 73 publications

(55 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is in agreement with the conclusions made in Refs. [47,48]. While the changes in the slopes of the S 2n values coincide with the observed changes in the E(2 + ) energies [45,49], they may also be due to the approaching maximum deformation in the midshell or reduced neutron pairing.…”

supporting

confidence: 63%

“…Recently, γ-ray spectroscopy on 164 Sm and 166 Gd with EURICA at RIBF revealed an increase in the E(2 + ) and E(4 + ) energies at N = 100 in comparison with the N = 98 cases for Gd and Sm isotopes, supporting an implied sub-shell closure at N = 100 proffered by the Hartree-Fock calculations of [46]. Interestingly, recent half-life measurements performed at RIKEN [47] did not find any supporting evidence for the N = 100 subshell closure. Additionally the systematics of the new K isomers found in the neutron-rich N = 100 isotones 162 Sm, 163 Eu, and 164 Gd at RIKEN could be explained without the predicted N = 100 shell gap [48].…”

mentioning

confidence: 90%

“…Although information on beta-decay half-lives [47] and level structures [45,49] of rare-earth nuclei has increased substantially in recent years, nuclear binding energiesi.e. masses -have not been pursued so intensively.…”

mentioning

confidence: 99%

“…To highlight such change, Fig. 3 shows the impact of our new mass values on D n for neutron-rich Gd isotopes, an isotopic chain extensively studied [45][46][47][48] for its possible change in nuclear structure. Whereas N = 82 presents as a clear peak, nothing is observed at N = 100 to support the existence of a subshell closure.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r -Process Calculations

et al. 2018

View full text Add to dashboard Cite

The rare-earth peak in the r-process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work takes an important step elucidating the nuclear structure and reducing the uncertainties in r-process calculations via precise atomic mass measurements at the JYFLTRAP double Penning trap. 158 Nd, 160 Pm, 162 Sm, and 164−166 Gd have been measured for the first time and the precisions for 156 Nd, 158 Pm, 162,163 Eu, 163 Gd, and 164 Tb have been improved considerably. Nuclear structure has been probed via twoneutron separation energies S2n and neutron pairing energy metrics Dn. The data do not support the existence of a subshell closure at N = 100. Neutron pairing has been found to be weaker than predicted by theoretical mass models. The impact on the calculated r-process abundances has been studied. Substantial changes resulting in a smoother abundance distribution and a better agreement with the solar r-process abundances are observed.

show abstract

supporting

confidence: 63%

mentioning

confidence: 90%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r -Process Calculations

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The mass measurements presented in this work provide essential nuclear data for the r-process calculations, complementing the knowledge of the rare-earth region together with the recent beta-decay half-life measurements from the Radioactive Isotope Beam Factory [6]. While the new mass-excess values are shown to further reduce the staggering at the top of the rare-earth abundance peak in the r-process, the effect is more modest than previously seen [26].…”

Section: Discussionmentioning

confidence: 66%

Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP

et al. 2020

View full text Add to dashboard Cite

The JYFLTRAP double Penning trap at the Ion Guide Isotope Separator On-Line (IGISOL) facility has been used to measure the atomic masses of 13 neutron-rich rare-earth isotopes. Eight of the nuclides, 161 Pm, 163 Sm, 164,165 Eu, 167 Gd, and 165,167,168 Tb, were measured for the first time. The systematics of the mass surface has been studied via one-and two-neutron separation energies as well as neutron pairing-gap and shell-gap energies. The proton-neutron pairing strength has also been investigated. The impact of the new mass values on the astrophysical rapid neutron capture process has been studied. The calculated abundance distribution results in a better agreement with the solar abundance pattern near the top of the rare-earth abundance peak at around A ≈ 165.

show abstract

Nuclear Data and Experiments for Astrophysics

Kankainen

Goriely

2022

The Euroschool on Exotic Beams, Vol. VI

View full text Add to dashboard Cite

Nuclear astrophysics aims to understand the origin of elements and the role of nuclear processes in astrophysical events. Nuclear reactions and reaction rates depend strongly on nuclear properties and on the astrophysical environment. Nuclear inputs for stellar reaction rates involve a variety of nuclear properties, theoretical models, and experimental data. Experiments providing data for nuclear astrophysics range from stable ion beam direct measurements to radioactive beam experiments employing inverse kinematics or indirect methods. Many properties relevant for astrophysical calculations, such as nuclear masses and β-decays, have also been intensively studied. This contribution shortly introduces selected astrophysical processes, discusses the related nuclear data needs, and gives examples of recent experimental and theoretical efforts in the field. Origin of Elements and Nucleosynthesis Processes The Composition of the UniverseOur knowledge of the composition of the Universe in general, and of our Solar System in particular, results almost entirely from the analysis of electromagnetic spectra originating from the various observable sources in the Universe, i.e., the

show abstract

94 β -Decay Half-Lives of Neutron-Rich Cs55 to
J. Wu¹,
S. Nishimura²,
G. Lorusso³
et al.

Cited by 73 publications

References 36 publications

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r -Process Calculations

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r -Process Calculations

Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP

Nuclear Data and Experiments for Astrophysics

Contact Info

Product

Resources

About

94 β -Decay Half-Lives of Neutron-Rich Cs55 to J. Wu1, S. Nishimura2, G. Lorusso3 et al.

Cited by 73 publications

References 36 publications

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r -Process Calculations

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r -Process Calculations

Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP

Nuclear Data and Experiments for Astrophysics

Contact Info

Product

Resources

About

94 β -Decay Half-Lives of Neutron-Rich Cs55 to
J. Wu¹,
S. Nishimura²,
G. Lorusso³
et al.