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Your search keyword '"M. V. Shumeiko"' showing total 6 results
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6 results on '"M. V. Shumeiko"'

1. Synthesizing and Studying Superheavy Nuclei 294Ts and 294Og

Author

V. K. Utyonkov, F. Sh. Abdullin, V. G. Subbotin, R. N. Sagaidak, M. G. Itkis, M. V. Shumeiko, I. V. Shirokovsky, Yu. Ts. Oganessian, A. N. Polyakov, A. V. Sabelnikov, Yu. S. Tsyganov, N. D. Kovrizhnykh, Grigory K. Vostokin, A. A. Voinov, and S. N. Dmitriev

Subjects
010302 applied physics, Physics, Nuclear physics, Isotope, 010308 nuclear & particles physics, 0103 physical sciences, Hadron, General Physics and Astronomy, Nuclide, 01 natural sciences, Recoil separator, Radioactive decay
Abstract

Experimental works performed on the Dubna gas-filled magnetic recoil separator (GFS) to study the reactions of formation of 294Ts and 294Og nuclides and the properties of their radioactive decay are described. Future possibilities of synthesizing new elements with Z = 119 and Z = 120 and performing experiments to study the properties of heavier isotopes of known superheavy nuclei Lv (Z = 116), Ts (Z = 117), and Og (Z = 118) are discussed.

Published
2020
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2. Experimental Study of the 249-251Cf + 48Ca Reactions: Toward the Magic Neutron Number N=184

Author

S. M. Van Cleve, M. G. Itkis, Grigory K. Vostokin, S. N. Dmitriev, Robert Grzywacz, D. C. McInturff, G. D. Owen, M. A. Stoyer, A. G. Popeko, James B. Roberto, A. I. Svirikhin, V. G. Subbotin, E. H. Smith, Rose A. Boll, R. N. Sagaidak, C. S. White, Yu. Ts. Oganessian, A. M. Sukhov, A. A. Voinov, N. T. Brewer, K. Miernik, A. N. Polyakov, K. P. Rykaczewski, Julie G. Ezold, J. H. Hamilton, Nathan J. Sims, N. D. Kovrizhnykh, D. J. Dean, V. K. Utyonkov, L. K. Felker, M. V. Shumeiko, Yu. S. Tsyganov, F. Sh. Abdullin, A. V. Sabelnikov, and I. V. Shirokovsky

Subjects
Physics, Nuclear physics, Neutron number, Magic (programming)
Published
2019
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3. Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca48 beam

Author

Robert Grzywacz, I. V. Shirokovsky, A. V. Sabelnikov, M. G. Itkis, A. A. Voinov, S. N. Dmitriev, N. T. Brewer, K. Miernik, F. Sh. Abdullin, A. N. Polyakov, Nathan J. Sims, K. P. Rykaczewski, Julie G. Ezold, S. M. Van Cleve, J. H. Hamilton, G. D. Owen, R. N. Sagaidak, M. V. Shumeiko, A. I. Svirikhin, A. M. Sukhov, E. H. Smith, L. K. Felker, N. D. Kovrizhnykh, V. G. Subbotin, Rose A. Boll, A. G. Popeko, Yu. S. Tsyganov, D. J. Dean, V. K. Utyonkov, C. S. White, Yu. Ts. Oganessian, James B. Roberto, M. A. Stoyer, Grigory K. Vostokin, and D. C. McInturff

Subjects
Physics, Isotope, 010308 nuclear & particles physics, Detector, chemistry.chemical_element, Californium, 01 natural sciences, Recoil separator, Nuclear physics, chemistry, 0103 physical sciences, Atomic nucleus, Irradiation, Decay chain, Nuclear Experiment, 010306 general physics, Beam (structure)
Abstract

The search for new decay chains of oganesson isotopes is presented. The experiment utilized the Dubna Gas Filled Recoil Separator and a highly segmented recoil-decay detection system. The signals from all detectors were analyzed in parallel by digital and analog data acquisition systems. For the first time, a target of mixed californium (51% Cf249, 13% Cf250, and 36% Cf251) recovered from decayed Cf252 sources was produced and irradiated with an intense Ca48 beam. The observation of a new decay chain of Og294 is reported. The prospects for reaching new isotopes Og295,296 are discussed.

Published
2018
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4. Neutron-deficient superheavy nuclei obtained in the Pu240+Ca48 reaction

Author

F. Sh. Abdullin, Lanqing Ma, Grigory K. Vostokin, R. N. Sagaidak, S. N. Dmitriev, A. I. Svirikhin, K. P. Rykaczewski, A. M. Sukhov, M. A. Stoyer, M. V. Shumeiko, L. Schlattauer, Robert Grzywacz, J. H. Hamilton, Yu. S. Tsyganov, A. V. Sabelnikov, A. V. Karpov, Zibao Gan, I. V. Shirokovsky, V. K. Utyonkov, K. Miernik, A. G. Popeko, A. N. Polyakov, M. G. Itkis, A. A. Voinov, V. G. Subbotin, N. T. Brewer, N. D. Kovrizhnykh, Yu. Ts. Oganessian, Wenxue Huang, and James B. Roberto

Subjects
Physics, Nuclear physics, 010308 nuclear & particles physics, 0103 physical sciences, Neutron, 010306 general physics, 01 natural sciences
Published
2018
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5. Connecting the 'Hot Fusion Island' to the Nuclear Mainland: Search for 283,284,285Fl Decay Chains

Author

Yu. Ts. Oganessian, A. A. Voinov, N. T. Brewer, F. Sh. Abdullin, Yu. S. Tsyganov, M. V. Shumeiko, K. P. Rykaczewski, Grigory K. Vostokin, A. V. Sabelnikov, James B. Roberto, V. K. Utyonkov, R. N. Sagaidak, V. G. Subbotin, I. V. Shirokovsky, A. M. Sukhov, J. H. Hamilton, Robert Grzywacz, Roger Henderson, K. Miernik, A. N. Polyakov, M. A. Stoyer, M. G. Itkis, and S. N. Dmitriev

Subjects
Nuclear physics, Physics, Fusion, Oceanography, Mainland, Decay chain
Published
2015
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6. Study of the properties of the superheavy nuclei Z = 117 produced in the 249Bk + 48Ca reaction

Author

F. Sh. Abdullin, M. A. Stoyer, I. V. Shirokovsky, K. P. Rykaczewski, J. M. Gostic, A. A. Voinov, A. V. Ramayya, Grigory K. Vostokin, M. V. Shumeiko, Julie G. Ezold, Robert Grzywacz, Kenton J. Moody, M. A. Ryabinin, J. H. Hamilton, J. Binder, Yu. S. Tsyganov, D. A. Shaughnessy, K. Miernik, A. N. Polyakov, C.W. Alexander, K. Felker, Roger Henderson, V. K. Utyonkov, David Miller, R. N. Sagaidak, A. M. Sukhov, James B. Roberto, Yu. Ts. Oganessian, M. G. Itkis, V. G. Subbotin, S. N. Dmitriev, N. J. Stoyer, and Rose A. Boll

Subjects
Nuclear physics, Isotope, Chemistry, Projectile, Physics, QC1-999, Atomic physics, Beam (structure), Excitation, Spectral line
Abstract

The reaction of 249 Bk with 48 Ca have been reinvestigated to provide new evidence for the discovery of element 117 on a larger number of events. The experiments were performed at five projectile energies and with a total beam dose of 48 Ca of about 4.6×10 19 . Two isotopes 293,294 117 were synthesized in the 249 Bk+ 48 Ca reaction, providing excitation functions and α-decay spectra of the produced isotopes that establishes these nuclei to be the products of the 4n- and 3n-evaporation channels, respectively. Decay properties of 293,294 117 and of all the daughter products agree with the data of the experiment in which these nuclei were synthesized for the first time in 2010. The new 289 115 events, populated by α decay of 293 117, demonstrate the same decay properties as those observed for 289 115 produced in the 243 Am( 48 Ca,2n) reaction thus providing cross- bombardment evidence. In addition, a single decay of 294 118 was observed from the reaction with 249 Cf - a result of the in-growth of 249 Cf in the 249 Bk target.

Published
2014

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