Eleven new heaviest isotopes of elements<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>Z</mml:mi><mml:mo>=</mml:mo><mml:mn>105</mml:mn></mml:mrow></mml:math>to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>Z</mml:mi><mml:mo>=</mml:mo><mml:mn>117</mml:mn></mml:mrow></mml:math>identified among the products of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant=

Oganessian, Yu. Ts.; Abdullin, F. Sh.; Bailey, P. D.; Benker, Dennis; Bennett, Megan; Dmitriev, S. N.; Ezold, Julie G.; Hamilton, J. H.; Henderson, R. A.; Иткис, М. Г.; Lobanov, Yu. V.; Mezentsev, A. N.; Moody, K. J.; Nelson, Steven G.; Polyakov, A. N.; Porter, C. E.; Ramayya, A. V.; Riley, F. D.; Roberto, J. B.; Ryabinin, M. A.; Rykaczewski, K. P.; Sagaidak, R. N.; Shaughnessy, D. A.; Shirokovsky, I. V.; Stoyer, M. A.; Subbotin, V. G.; Sudowe, Ralf; Sukhov, A. M.; Taylor, Ros; Tsyganov, Yu. S.; Utyonkov, V. K.; Voinov, A. A.; Vostokin, G. K.; Wilk, P. A.

doi:10.1103/physrevc.83.054315

Cited by 125 publications

(40 citation statements)

References 57 publications

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“…In the experiments with the 249 Bk target at an applied beam dose of 9×10 18 48 Ca one decay chain was observed (see Figure 36, adopted from [117]), which is quite similar to the decay chain 286 Uut observed in the decay pattern from 294 117 [151], representing the 3-n evaporation channel. Unfortunately, the U-400 cyclotron was limited in 48 Ca beam energy leading to excitation energies between 27 and 35 MeV in the Bk targets only.…”

Section: Experimental Chemical Identification Of Uutmentioning

confidence: 69%

“…Unfortunately, the U-400 cyclotron was limited in 48 Ca beam energy leading to excitation energies between 27 and 35 MeV in the Bk targets only. Therefore, no 4-n evaporation channel could be observed, which would have an estimated factor of 4 higher cross section at 39 MeV excitation energy [151]. In 2013 another experiment was conducted following the same principal scheme as described above [152].…”

Section: Experimental Chemical Identification Of Uutmentioning

confidence: 99%

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Chemical studies of elements with Z⩾ 104 in gas phase

2015

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Section: Experimental Chemical Identification Of Uutmentioning

confidence: 69%

Section: Experimental Chemical Identification Of Uutmentioning

confidence: 99%

Chemical studies of elements with Z⩾ 104 in gas phase

2015

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“…However, the present work employs the double-folding model to construct nuclear and Coulomb potentials and pursue a more microscopic understanding. In addition, Oganessian et al have presented more details on the α decay of these nine new isotopes very recently [53]. With these in mind, we also give systematic calculations on the newly observed α-decay chains from the new SHE Z = 117.…”

Section: Numerical Results and Discussionmentioning

confidence: 90%

Systematic study of new data for extremeαdecays

Qian

Ren

2011

Phys. Rev. C

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Recently discovered α decays with new or improved data, covering naturally occurring α emitters with long lifetimes, short-lived ones approaching the proton drip line, and decays of heavy and superheavy elements, have been studied in a systematic investigation within the modified two-potential approach for deformed nuclei by constructing the microscopic double-folding potential. It is found that the experimental half-lives are well reproduced in the density-dependent cluster model. Some predictions on natural α emitters and α decays of several proton emitters are made in this study. Moreover, the α-decay half-lives of even-even superheavy nuclei with Z = 110-114 and N = 184-194 are estimated to pursue the quite stable nuclei around the proton Z ∼ 114 and neutron N ∼ 184 shell closures. These predictions can be useful for future experiments aimed at searching for long-lived natural elements.

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“…The hot fusion reactions, commonly performed at the Joint Institute for Nuclear Research and the Flerov Laboratory of Nuclear Reactions, Dubna, are those reactions where the light elements are fused with long-lived isotopes of the heaviest actinides which results in the production of hot compound nuclei with excitation energies of 40-50 MeV. In collaboration with Lawrence Livermore National Laboratory, Oganessian and co-workers [12,[18][19][20][21][22][23], have successfully synthesized 18 new nuclides with Z = 112-118 and their daughter isotopes through the complete fusion reactions of heavy actinide target nuclei ( 233,238 U, 237 Np, 242,244 Pu, 243 Am, 245,248 Cm, and 249 Cf) with 48 Ca beams. The cold fusion reactions or the "cluster-based fusion" [16,[24][25][26][27][28][29][30][31] are being performed mainly at GSI, Darmstadt and at Rikagaku Kenkyusho, Japan for the production of SHN with Z = 107-112.…”

Section: Introductionmentioning

confidence: 99%

Predictions for the α-decay chains ofZ=120superheavy nuclei in the range272≤A≤319

Santhosh

Priyanka

2014

Phys. Rev. C

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The predictions on the α-decay chains of the isotopes of the superheavy nuclei with Z = 120 in the range 272 A 319 have been done within the Coulomb and proximity potential model for deformed nuclei. A comparison of our calculated α half-lives with the values computed using the Viola-Seaborg [J. Inorg. Nucl. Chem. 28, 741 (1966)] systematic, the universal curve of Poenaru et al. [Phys. Rev. C 74, 014312 (2006)], and the analytical formulas of Royer [J. Phys. G: Nucl. Part. Phys. 26, 1149 (2000)] show good agreement with each other. An extensive study on the spontaneous fission half-lives of all the isotopes under study has been performed to identify the mode of decay of these isotopes. The study reveals that the α-decay half-lives and the mode of decay of the isotopes of 298,299 120, which are evaluated by using our formalisms, agree well with the experimental observations of Oganessian et al. [Phys. Rev. C 79, 024603 (2009)]. Our study on the isotopes of Z = 120 predicts that the α decay restricts within the range 277 A 308 as those isotopes with A 276 and those nuclei with A 309 do not survive fission. We have also forecasted the mode of decay of 288−302 120 superheavy nuclei as six consistent α chains from the nuclei of 288,289,291−295 120, seven consistent α chains from the nuclei of 290 120, five consistent α chains from the nuclei of 296,297 120, and three consistent α chains from the nuclei of 300−302 120, which could be of great interest to the experimentalists. The one-proton and two-proton separation energy calculations on 272−319 120 superheavy nuclei have revealed that the isotopes spanning the range 273 A 291 may be considered to be the probable proton emitters.

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Eleven new heaviest isotopes of elementsZ=105toZ=117identified among the products of

Cited by 125 publications

References 57 publications

Chemical studies of elements with Z⩾ 104 in gas phase

Chemical studies of elements with Z⩾ 104 in gas phase

Systematic study of new data for extremeαdecays

Predictions for the α-decay chains ofZ=120superheavy nuclei in the range272≤A≤319

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