Spectroscopy of transfermium nuclei: 102252No

Herzberg, R.‐D.; Amzal, N.; Becker, F.; Butler, P. A.; Chewter, A. J.; Cocks, J. F. C.; Dorvaux, O.; Eskola, Kari J.; Gerl, J.; Greenlees, P. T.; Hammond, N. J.; Hauschild, K.; Helariutta, K.; Heßberger, F. P.; Houry, M.; Jones, G.D.; Jones, P. M.; Julin, R.; Juutinen, S.; Kankaanpää, H.; Kettunen, H.; Khoo, T. L.; Körten, W.; Kuusiniemi, P.; Coz, Y. Le; Leino, M.; Lister, C. J.; Lucas, R.; Muikku, M.; Nieminen, P.; Page, R. D.; Rahkila, P.; Reiter, P.; Schlegel, C.; Scholey, C.; Stézowski, O.; Theisen, Ch.; Trzaska, W. H.; Uusitalo, J.; Wollersheim, H. J.

doi:10.1103/physrevc.65.014303

Cited by 108 publications

(45 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two other states are predicted to lie below 300 keV, as can be expected from the neutron single-particle spectrum of figure 1. No are taken from [3], data for 254 No from [6]. The overall behavior of the moments of inertia of the Fm and Rf isotopes is very similar to the one obtained previously in ref.…”

Section: Quasi-particle States Of Nuclei Around 252254 Nosupporting

confidence: 64%

See 1 more Smart Citation

Skyrme mean-field study of rotational bands in transfermium isotopes

et al. 2003

View full text Add to dashboard Cite

show abstract

Section: Quasi-particle States Of Nuclei Around 252254 Nosupporting

confidence: 64%

“…252 No and 254 No [3,4,5,6,7] are in this respect of particular importance. They bring data in a region close to the domain of super-heavy nuclei, where our knowledge of single-particle spectra and of pairing correlations is particularly limited.…”

Section: The Recent Experimental Results For the Nobelium Isotopesmentioning

confidence: 99%

Skyrme mean-field study of rotational bands in transfermium isotopes

et al. 2003

View full text Add to dashboard Cite

show abstract

“…Although the statistics are rather weak, each (presumed) transition is in coincidence with at least one of the other transitions. The corresponding level scheme including also transitions from previous work [15,37] is shown in Fig. 4.…”

Section: B Prompt Spectroscopy At the Target Positionmentioning

confidence: 99%

Investigation of high-Kstates in252No

Sulignano¹,

Theisen²,

Delaroche³

et al. 2012

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, it is still an open question as to why 252 No and 254 No exhibit significantly different rotational behavior at high spins. The difference has been noticed since 2001 when the rotational band up to I = 20 in 252 No was first observed [13]. In Fig.…”

mentioning

confidence: 92%

“…Modern in-beam spectroscopy experiments have observed rotational bands up to high spins, such as in the even-even nuclei 246 Fm [10], 248 Fm [4], 250 Fm [11,12], 252 No [13], and 254 No [6,14]. Especially, the yrast spectrum of 254 No has been extended to spins of more than 20h because of the relatively high production rate.…”

mentioning

confidence: 99%

Understanding the different rotational behaviors of252No and254No

2012

View full text Add to dashboard Cite

Total Routhian surface calculations have been performed to investigate rapidly rotating transfermium nuclei, the heaviest nuclei accessible by detailed spectroscopy experiments. The observed fast alignment in 252 No and slow alignment in 254 No are well reproduced by the calculations incorporating high-order deformations. The different rotational behaviors of 252 No and 254 No can be understood for the first time in terms of β 6 deformation that decreases the energies of the νj 15/2 intruder orbitals below the N = 152 gap. Our investigations reveal the importance of high-order deformation in describing not only the multiquasiparticle states but also the rotational spectra, both providing probes of the single-particle structure concerning the expected doubly magic superheavy nuclei.DOI: 10.1103/PhysRevC.86.011301 PACS number(s): 21.10. Re, 21.60.Cs, 23.20.Lv, 27.90.+b Together with the exploration of nuclei far away from the stability line using radioactive nuclear beams, the synthesis of superheavy nuclei towards the predicted "island of stability" by fusion reactions is the focus of current research on atomic nuclei [1,2]. The occurrence of superheavy nuclei is due to the quantum shell effect (see, e.g., Ref. [3]) that overcomes the strong Coulomb repulsion between the large number of protons. The shell effect peaks at the expected doubly magic nucleus next after 208 Pb, the center of the stability island. Unfortunately, various theories give rise to different magic numbers, and available experiments have not been able to confirm or exclude any of them. Nevertheless, one can obtain single-particle information that is intimately related to the shell structure of superheavy nuclei from transfermium nuclei where γ -ray spectroscopy has been accessible for experiments [4,5].Transfermium nuclei have been found to be deformed. For example, β 2 ≈ 0.27 has been derived for 254 No from the measured ground-state band [6]. The observation of K isomers with highly hindered decays in 254 No [7][8][9] points to an axially symmetric shape for the nucleus. The deformation can bring the single-particle levels from the next shell across the predicted closure down to the Fermi surface. They play an active role in both nuclear noncollective and collective motions that in turn can serve as probes of the single-particle structure. For example, the observed K π = 3 + state formed by broken-pair excitation in 254 No is of special interest [7]. This is because the π 1/2 − [521] orbital occupied by one unpaired nucleon stems from the spherical orbital 2f 5/2 whose position relative to the spin-orbit partner 2f 7/2 determines whether Z = 114 is a magic number for the "island of stability." On the other hand, high-j intruder orbitals sensitively respond to the Coriolis force during collective rotation. The observation of upbending or backbending phenomena is usually associated with the alignment of high-j intruder orbitals. The spectroscopy experiments on transfermium nuclei provide a * hlliu@mail.xjtu.edu.cn testing ground for...

show abstract

Spectroscopy of transfermium nuclei: 102252No

Cited by 108 publications

References 25 publications

Skyrme mean-field study of rotational bands in transfermium isotopes

Skyrme mean-field study of rotational bands in transfermium isotopes

Investigation of high-Kstates in252No

Understanding the different rotational behaviors of252No and254No

Contact Info

Product

Resources

About