Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>No</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>254</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Th</mml:mi></mml:mrow><mml:mprescripts

Henning, G.; Khoo, T. L.; Лопез-Мартенс, А.; Seweryniak, D.; Alcorta, M.; Asai, Mitsuteru; Back, B. B.; Bertone, P. F.; Boilley, David; Carpenter, M. P.; Chiara, C. J.; Chowdhury, P.; Галл, Б.; Greenlees, P. T.; Gürdal, G.; Hauschild, K.; Heinz, A.; Hoffman, C. R.; Janssens, R. V. F.; Карпов, А. В.; Kay, B. P.; Kondev, F. G.; Lakshmi, S.; Lauritsen, T.; Lister, C. J.; McCutchan, E. A.; Nair, C.; Piot, J.; Potterveld, D. H.; Reiter, P.; Rogers, A. M.; Rowley, N.; Zhu, S.

doi:10.1103/physrevlett.113.262505

Cited by 35 publications

(13 citation statements)

References 40 publications

(53 reference statements)

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“…This prescription provided the normalization factor a, the average angular momentum entry point b = 14h, and the diffuseness c = 3h. It is interesting to note that the intensity profile inferred here corresponds remarkably well to that measured for 254 No at similar conditions of excitation energy and angular momentum for the compound nucleus [38]. The transition rates of the stretched E 2 and of the mixed I = 1 E 2/M1 transitions connecting the two signature partner bands were subsequently calculated from the particle plus rotor model [39] using the reduced radiative transition probabilities B(M1) and B(E 2), and radiative transition rates T γ (M1) and T γ (E 2):…”

Section: (B)supporting

confidence: 81%

In-beam γ -ray and electron spectroscopy of Md249,251

Briselet¹,

Theisen²,

Sulignano³

et al. 2020

Phys. Rev. C

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Section: (B)supporting

confidence: 81%

In-beam γ -ray and electron spectroscopy of Md249,251

Briselet¹,

Theisen²,

Sulignano³

et al. 2020

Phys. Rev. C

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“…The heaviest nucleus from which FBE was deduced, is the deformed 254 No. The data were derived at the fragment mass analyzer (FMA) at Argonne National Laboratory [120]. An FBE of (6.0 ± 0.5) MeV was measured at spin 15h from which a value of (6.6 ± 0.9) MeV was extrapolated for spin 0h.…”

Section: Shell-correction Energies Fission Barriers and Cross-sectionmentioning

confidence: 99%

Review of even element super-heavy nuclei and search for element 120

et al. 2016

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The reaction 54 Cr + 248 Cm was investigated at the velocity filter SHIP at GSI, Darmstadt, with the intention to study production and decay properties of isotopes of element 120. Three correlated signals were measured, which occurred within a period of 279 ms. The heights of the signals correspond with the expectations for a decay sequence starting with an isotope of element 120. However, a complete decay chain cannot be established, since a signal from the implantation of the evaporation residue cannot be identified unambiguously. Measured properties of the event chain are discussed in detail. The result is compared with theoretical predictions. Previously measured decay properties of even element super-heavy nuclei were compiled in order to find arguments for an assignment from the systematics of experimental data. In the course of this review, a few tentatively assigned data could be corrected. New interpretations are given for results which could not be assigned definitely in previous studies. The discussion revealed that the cross-section for production of element 120 could be high enough so that a successful experiment seems possible with presently available techniques. However, a continuation of the experiment at SHIP for a necessary confirmation of the results obtained in a relatively short irradiation of five weeks is not possible at GSI presently. Therefore, we decided to publish the results of the measurement and of the review as they exist now. In the summary and outlook section we also present concepts for the continuation of research in the field of super-heavy nuclei. 1 Introduction, theoretical background, and status of experiments Scientific attempts to synthesize new elements beyond uranium started in the middle of the 1930s, when the

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“…As a "reality check" on these results, we calculated the EVR spin distribution for the reaction 176 Yb( 48 Ca,4n) 220 Th and compared it to the measured spin distribution of Henning et al [11] (Figure 2) for the same reaction. The comparison of the results for the measured and calculated spin distributions indicates that the calculational procedure used in this work is appropriate.…”

Section: Outline Of Calculationsmentioning

confidence: 99%

Survival Mediated Heavy Element Capture Cross Sections

Loveland

Yao

2017

EPJ Web Conf.

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Abstract. Formally, the cross section for producing a heavy evaporation residue, σ EVR , in a fusion reaction can be written aswhere E is the center of mass energy, and T is the probability of the colliding nuclei to overcome the potential barrier in the entrance channel and reach the contact point. P CN is the probability that the projectile-target system will evolve from the contact point to the compound nucleus. W sur is the probability that the compound nucleus will decay to produce an evaporation residue rather than fissioning. However, one must remember that the W sur term effectively sets the allowed values of the spin, which in turn, restricts the values of the capture and fusion cross sections. We point out the implications of this fact for capture cross sections for heavy element formation reactions.

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Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases ofNo254andTh

Cited by 35 publications

References 40 publications

In-beam γ -ray and electron spectroscopy of Md249,251

In-beam γ -ray and electron spectroscopy of Md249,251

Review of even element super-heavy nuclei and search for element 120

Survival Mediated Heavy Element Capture Cross Sections

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