Decay and Fission Hindrance of Two- and Four-Quasiparticle<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi></mml:math>Isomers in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Rf</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>254</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>

Chen, J.; Seweryniak, D.; Kondev, F. G.; Gates, J. M.; Gregorich, Κ. Ε.; Ahmad, I.; David, H. M.; Alcorta, M.; Back, B. B.; Baartman, B.; Bertone, P. F.; Bernstein, L. A.; Campbell, C. M.; Carpenter, M. P.; Chiara, C. J.; Clark, R. M.; Cromaz, M.; Doherty, D. T.; Dracoulis, George; Esker, N. E.; Fallon, P.; Gothe, Oliver; Greene, J. P.; Greenlees, P. T.; Hartley, D. J.; Hauschild, K.; Hoffman, C. R.; Hota, S. S.; Janssens, R. V. F.; Khoo, T. L.; Konki, J.; Kwarsick, J. T.; Lauritsen, T.; Macchiavelli, A. O.; Mudder, P. R.; Nair, C.; Qiu, Yibing; Rissanen, J.; Rogers, A. M.; Ruotsalainen, P.; Savard, G.; Stolze, S.; Wiens, A.; Zhu, S.

doi:10.1103/physrevlett.115.132502

Cited by 39 publications

(32 citation statements)

References 32 publications

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“…Consequently, as the level density increases with increasing system size, deformation softness and shape coexistence become important issues in superheavy nuclei. In addition to that rich deformation scenario, there is another type of coexistence in deformed superheavy nuclei, related to K-isomerism (David et al, 2015;Jachimowicz et al, 2015;Liu et al, 2014;Xu et al, 2004). Og 184 .…”

Section: Collectivitymentioning

confidence: 99%

“…Estimates of this hindrance can be found in (Clark and Rudolph, 2018;Delion et al, 2007;Jachimowicz et al, 2018;Ward et al, 2015). In this context, experimental studies of high-K isomers in deformed superheavy nuclei (Ackermann, 2015;Asai et al, 2015;David et al, 2015;Hofmann et al, 2001;Robinson et al, 2011;Sulignano et al, 2012) are of great interest.…”

Section: α Decaymentioning

confidence: 99%

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Colloquium : Superheavy elements: Oganesson and beyond

et al. 2019

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During the last decade, six new superheavy elements were added into the seventh period of the periodic table, with the approval of their names and symbols. This milestone was followed by proclaiming 2019 the International Year of the Periodic Table of Chemical Elements by the United Nations General Assembly. According to theory, due to their large atomic numbers, the new arrivals are expected to be qualitatively and quantitatively different from lighter species. The questions pertaining to superheavy atoms and nuclei are in the forefront of research in nuclear and atomic physics, and chemistry. This Colloquium offers a broad perspective on the field and outlines future challenges. References

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Section: Collectivitymentioning

confidence: 99%

Section: α Decaymentioning

confidence: 99%

Colloquium : Superheavy elements: Oganesson and beyond

et al. 2019

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“…Indeed, a four-quasiparticle isomer has now been identified in 254 Rf, with a half-life that is ten times longer than the ground state [314]. This issue of isomer vs. ground-state stability, especially at the limits of nuclear binding, is another motivating aspect that emerged recently [315] for pursuing studies in this region.…”

Section: High-k Isomers In Superheavy Nucleimentioning

confidence: 99%

Review of metastable states in heavy nuclei

2016

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Abstract.The structure of nuclear isomeric states is reviewed in the context of their role in contemporary nuclear physics research. Emphasis is given to high-spin isomers in heavy nuclei, with A 150. The possibility to exploit isomers to study some of the most exotic nuclei is a recurring theme. In spherical nuclei, the role of octupole collectivity is discussed in detail, while in deformed nuclei the limitations of the K quantum number are addressed. Isomer targets and isomer beams are considered, along with applications related to energy storage, astrophysics, medicine, and experimental advances.

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“…Note that this is one of the only two four-particle isomers reported experimentally in this region. The other one is the recently observed 247(73) µs K π = 16 + isomer in 254 Rf [12].…”

Section: Introductionmentioning

confidence: 85%

High-K multi-particle bands and pairing reduction in ²⁵⁴No *

Zhao

Zhang

et al. 2020

Chinese Phys. C

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The multi-particle states and rotational properties of two-particle bands in 254 No are investigated by the cranked shell model (CSM) with pairing correlations treated by a particle-number conserving (PNC) method. For the first time, the rotational bands on top of two-particle K π = 3 + , 8 − and 10 + states and the pairing reduction are studied theoretically in 254 No. The experimental excitation energies and moments of inertia for the multi-particle state are reproduced well by the calculation. Better agreement with the data are achieved by including the high-order deformation ε6 which leads to enlarged Z = 100 and N = 152 deformed shell gaps. The rise of the J (1) in these two-particle bands compared with the ground-state band is attributed to the pairing reduction due to the Pauli blocking effects.

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Decay and Fission Hindrance of Two- and Four-QuasiparticleKIsomers inRf254

Cited by 39 publications

References 32 publications

Colloquium : Superheavy elements: Oganesson and beyond

Colloquium : Superheavy elements: Oganesson and beyond

Review of metastable states in heavy nuclei

High-K multi-particle bands and pairing reduction in ²⁵⁴No *

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Decay and Fission Hindrance of Two- and Four-QuasiparticleKIsomers inRf254

Cited by 39 publications

References 32 publications

Colloquium : Superheavy elements: Oganesson and beyond

Colloquium : Superheavy elements: Oganesson and beyond

Review of metastable states in heavy nuclei

High-K multi-particle bands and pairing reduction in 254No *

Contact Info

Product

Resources

About

High-K multi-particle bands and pairing reduction in ²⁵⁴No *