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Hofmann, S.

doi:10.5506/aphyspolb.43.179

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…This is directly connected with the decrease of the fission barriers of respective compound nuclei. Yet, with the advance to the Z CN 112 domain the growth of fission barriers, predicted by the macro-microscopic theory [40,[83][84][85], should change the picture. Approach to the N=184 closed shell would result in the increased cross section of the hot fusion reactions resulting in the formation of SHN.…”

Section: Choice Of the Reaction For Synthesismentioning

confidence: 99%

Superheavy nuclei: from predictions to discovery

Oganessian¹,

Sobiczewski²,

Ter‐Akopian³

2017

Phys. Scr.

128

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A fundamental outcome of modern nuclear microscopic theory is the prediction of the ‘islands of stability’ in the region of hypothetical superheavy elements (SHEs). In a heavy nucleus, going through the large-scale deformation on the way to fission, the motion of single nucleons is coupled with the collective degrees of freedom of the whole system. The most striking effect of this coupling is obtained for the case of fission of the heaviest nuclei, whose existence is defined entirely by the nuclear structure, i.e. by the shell effect. From this point of view, the synthesis and study of properties of superheavy nuclei (SHN) is a direct way for checking the basic statements of the microscopic nuclear theory. On the nuclide map, SHN outline the border of the heaviest nuclear masses. SHN set the limits of the periodic system of chemical elements. The study of possible existence of SHN in nature offers a way for testing different scenarios of astrophysical nucleosynthesis. The paper elucidates experimental approaches, used for testing the theory predictions made about the SHN, and presents the results of the discovery of the ‘stability island’ of SHEs.

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Section: Choice Of the Reaction For Synthesismentioning

confidence: 99%

Superheavy nuclei: from predictions to discovery

Oganessian¹,

Sobiczewski²,

Ter‐Akopian³

2017

Phys. Scr.

128

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“…Over the last three decades, the synthesis of superheavy nuclei has been dramatically rejuvenated owing to the emergence of the cold fusion reactions, performed mainly at GSI, Dramstart [1][2][3][4][5][6], and the hot fusion and/or the actinide based fusion reactions performed mainly at JINR, Dubna [7][8][9][10][11][12]. Through these advancements of stable nuclear beam technology, it is not only possible to synthesize superheavy nuclei but also provide impressive prospects for understanding the nuclear properties of these nuclei [1][2][3][4][5][6][7][8][9][10][11][12][13]. At present, the question of the mode of decay and the stability of these newly synthesized nuclei arises.…”

Section: Introductionmentioning

confidence: 99%

Probable Decay Modes at Limits of Nuclear Stability of the Superheavy Nuclei

Bhuyan

2018

Phys. Atom. Nuclei

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The modes of decay for the even-even isotopes of superheavy nuclei of Z = 118 and 120 with neutron number 160 ≤ N ≤ 204 are investigated in the framework of the axially deformed relativistic mean field model. The asymmetry parameter η and the relative neutronproton asymmetry of the surface to the center (R η ) are estimated from the ground state density distributions of the nucleus. We analyze the resulting asymmetry parameter η and the relative neutron-proton asymmetry R η of the density play a crucial role in the mode(s) of decay and its half-life. Moreover, the excess neutron richness on the surface, facets a superheavy nucleus for β¯ decays.---*

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“…In addition, the isotopes of element 116 are the decay daughters of element 118 isotopes, which are produced via the 249 CF + 48 Ca reaction [2,7]. The results of these studies reveal that, for superheavy elements, alpha decay rather than fission is the dominant decay mode [1,5,6,10].…”

Section: Introductionmentioning

confidence: 99%