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Your search keyword '"V.K. Utyonkov"' showing total 7 results
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7 results on '"V.K. Utyonkov"'

1. α-decay properties of new neutron-deficient isotope 203Ac

Author

J.G. Wang, Z.G. Gan, Z.Y. Zhang, M.H. Huang, L. Ma, M.M. Zhang, H.B. Yang, C.L. Yang, Y.H. Qiang, X.Y. Huang, Z. Zhao, S.Y. Xu, Z.C. Li, L.X. Chen, L.C. Sun, H. Zhou, X. Zhang, X.L. Wu, Y.L. Tian, Y.S. Wang, J.Y. Wang, W.X. Huang, M.L. Liu, Z.W. Lu, Y. He, Z.Z. Ren, S.G. Zhou, X.H. Zhou, H.S. Xu, V.K. Utyonkov, A.A. Voinov, Yu.S. Tsyganov, and A.N. Polyakov

Subjects
New isotope, Neutron-deficient nuclei, α decay, Gas-filled recoil separator, Physics, QC1-999
Abstract

A new isotope 203Ac was produced in the reaction 40Ca + 169Tm at beam energy of 226 MeV. One correlated α-decay chain was attributed to 203Ac. The α-particle energy and half-life were determined to be 8217(16) keV and 56−26+269 μs, respectively. The reduced α-decay width (δ2) of 203Ac was deduced to be 1096−906+921 keV, which indicates a favored α decay. The systematics of δ2 and single-particle energy levels indicate that the new state probably arises from the intruder s1/2 configuration, which shows an onset of deformation in Ac isotopes. The proton separation energy Sp of 203Ac was extracted as −1214(22) keV and the systematics of Sp for odd-A isotopes beyond proton drip line were discussed.

Published
2024
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2. α decay of the new isotope 204Ac

Author

M.H. Huang, Z.G. Gan, Z.Y. Zhang, L. Ma, J.G. Wang, M.M. Zhang, H.B. Yang, C.L. Yang, X.Y. Huang, Z. Zhao, S.Y. Xu, L.X. Chen, X.J. Wen, Y.F. Niu, C.X. Yuan, Y.L. Tian, Y.S. Wang, J.Y. Wang, M.L. Liu, Y.H. Qiang, W.Q. Yang, H.B. Zhang, Z.W. Lu, S. Guo, W.X. Huang, Y. He, Z.Z. Ren, S.G. Zhou, X.H. Zhou, H.S. Xu, V.K. Utyonkov, A.A. Voinov, Yu.S. Tsyganov, and A.N. Polyakov

Subjects
New isotope, Neutron-deficient, α-particle energy, Half-life, Gas-filled recoil separator, Excitation function, Physics, QC1-999
Abstract

A new proton-unbound isotope 204Ac was produced in the fusion-evaporation reaction Tm(40169Ca,5n)204Ac and identified via the recoil-α correlation at the gas-filled recoiled separators SHANS2 and SHANS. The excitation function for producing 204Ac was measured and the optimal beam energy was evaluated to be 212 MeV. Nineteen ER - α1 - α2 - α3 decay chains were observed for this isotope. Based on these chains, the α-particle energy and half-life of 204Ac were determined to be 7948(15) keV and 7.4−1.4+2.2 ms, respectively. Both are consistent with the theoretical prediction. The reduced α-decay width was deduced to be 49−15+10 keV, which indicates a favored α decay for 204Ac. In addition, more precise decay properties of Eα = 7883(15) keV and T1/2 = 7.7−1.6+2.7 ms were obtained for 205Ac.

Published
2022
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3. A gas-filled recoil separator, SHANS2, at the China Accelerator Facility for Superheavy Elements

Author

S.Y. Xu, Z.Y. Zhang, Z.G. Gan, M.H. Huang, L. Ma, J.G. Wang, M.M. Zhang, H.B. Yang, C.L. Yang, Z. Zhao, X.Y. Huang, L.X. Chen, X.J. Wen, H. Zhou, H. Jia, L.N. Sheng, J.Q. Wu, X.L. Peng, Q. Hu, J. Yang, Q.G. Yao, Y.S. Qin, H.H. Yan, Z. Chai, J.C. Zhang, Y. Zhang, Z. Du, H.M. Xie, B. Zhao, G.Z. Sun, F.F. Wang, C.Z. Yuan, X.L. Wu, R.F. Chen, H.B. Zhang, Z.W. Lu, H.R. Yang, X.X. Xu, Y.X. Chen, A.H. Feng, P. Sun, J.K. Xu, Y. He, L.T. Sun, X.H. Zhou, H.S. Xu, V.K. Utyonkov, A.A. Voinov, Yu.S. Tsyganov, A.N. Polyakov, and D.I. Solovyev

Subjects
Nuclear and High Energy Physics, Instrumentation
Published
2023
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4. Average charge states of heavy ions in rarefied hydrogen

Author

Yu.Ts. Oganessian, V.K. Utyonkov, D.I. Solovyev, F.Sh. Abdullin, S.N. Dmitriev, D. Ibadullayev, M.G. Itkis, N.D. Kovrizhnykh, D.A. Kuznetsov, O.V. Petrushkin, A.V. Podshibiakin, A.N. Polyakov, A.G. Popeko, R.N. Sagaidak, L. Schlattauer, V.D. Shubin, M.V. Shumeiko, Yu.S. Tsyganov, A.A. Voinov, V.G. Subbotin, A.Yu. Bodrov, A.V. Sabel’nikov, K.P. Rykaczewski, T.T. King, J.B. Roberto, N.T. Brewer, R.K. Grzywacz, Z.G. Gan, Z.Y. Zhang, M.H. Huang, and H.B. Yang

Subjects
Nuclear and High Energy Physics, Instrumentation
Published
2023
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5. DGFRS-2—A gas-filled recoil separator for the Dubna Super Heavy Element Factory

Author

Yu.Ts. Oganessian, V.K. Utyonkov, A.G. Popeko, D.I. Solovyev, F.Sh. Abdullin, S.N. Dmitriev, D. Ibadullayev, M.G. Itkis, N.D. Kovrizhnykh, D.A. Kuznetsov, O.V. Petrushkin, A.V. Podshibiakin, A.N. Polyakov, R.N. Sagaidak, L. Schlattauer, I.V. Shirokovsky, V.D. Shubin, M.V. Shumeiko, Yu.S. Tsyganov, A.A. Voinov, V.G. Subbotin, V.V. Bekhterev, N.A. Belykh, O.A. Chernyshev, K.B. Gikal, G.N. Ivanov, A.V. Khalkin, V.V. Konstantinov, N.F. Osipov, S.V. Paschenko, A.A. Protasov, V.A. Semin, V.V. Sorokoumov, K.P. Sychev, V.A. Verevochkin, B.I. Yakovlev, S. Antoine, W. Beeckman, P. Jehanno, M.I. Yavor, A.P. Shcherbakov, K.P. Rykaczewski, T.T. King, J.B. Roberto, N.T. Brewer, R.K. Grzywacz, Z.G. Gan, Z.Y. Zhang, M.H. Huang, and H.B. Yang

Subjects
Nuclear and High Energy Physics, Instrumentation
Published
2022
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6. Discovery of elements 113 - 118

Author

V.K. Utyonkov, Yu.Ts. Oganessian, S.N. Dmitriev, K.J. Moody, M.A. Stoyer, D.A. Shaughnessy, J.B. Roberto, K.P. Rykaczewski, and J.H. Hamilton

Subjects
superheavy elements, spontaneous fission, Nuclear Theory, α-decay, Nuclear Experiment, lcsh:Physics, lcsh:QC1-999
Abstract

Review of discovery and investigation of isotopes of elements 113-118 produced in the reactions of 48 Ca with target nuclei 238U-249Cf is presented. The synthesis of the heaviest nuclei, their summary decay properties, and methods of identification are discussed. The radioactive properties of the new nuclei give evidence of the significant increase of the stability of the heavy nuclei with rise of their neutron number and approaching magic number N=184.

Published
2017

7. Observation of enhanced nuclear stability near the 162 neutron shell

Author

R.W. Lougheed, K.J. Moody, J.F. Wild, E.K. Hulet, J.H. McQuaid, Yu.A. Lazarev, Yu.V. Lobanov, Yu.Ts. Oganessian, V.K. Utyonkov, F.Sh. Abdullin, G.V. Buklanov, B.N. Gikal, S. Iliev, A.N. Mezentsev, A.N. Polyakov, I.M. Sedykh, I.V. Shirokovsky, V.G. Subbotin, A.M. Sukhov, Yu.S. Tsyganov, and V.E. Zhuchko

Published
1993
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