Study of the 249-251Cf + 48Ca reactions: Recent results and outlook

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

doi:10.1088/1742-6596/966/1/012057

Study of the ^249-251Cf + ⁴⁸Ca reactions: Recent results and outlook

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

Research output: Contribution to journal › Conference article › peer-review

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Abstract

Experiment aiming at the synthesis of heavy isotopes of Z=118 (Og) using beam of ⁴⁸Ca and a target of ^249-251Cf was undertaken in October 2015 - April 2016 employing the Dubna Gas-Filled Recoil Separator (FLNR JINR). The target of mixed isotopes of ^249-251Cf (50.7% of ²⁴⁹Cf, 12.9% of ²⁵⁰Cf, and 36.4% of ²⁵¹Cf) was irradiated by ⁴⁸Ca ions at two beam energies of 252 and 258 MeV with the corresponding accumulated beam doses of 1.6×10¹⁹ and 1.1×10¹⁹. A single event observed at lower beam energy was assigned to the isotope ²⁹⁴Og, the product of the reaction ²⁴⁹Cf(⁴⁸Ca, 3n); its decay pattern and the observed radioactive properties of the nuclides in the decay chain reproduce in full those observed for ²⁹⁴Og in our earlier experiments of 2002-2005 and 2012. At higher beam energy we observed no decay chains that could be attributed to the isotopes of Og. The possibility of renewal of this experiment in the future is discussed.

Original language	English
Article number	012057
Journal	Journal of Physics: Conference Series
Volume	966
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/966/1/012057
State	Published - Feb 22 2018
Event	12th International Spring Seminar on Nuclear Physics: Current Problems and Prospects for Nuclear Structure - Ischia, Italy Duration: May 15 2017 → May 19 2017

Funding

We acknowledge the support of the RFBR Grant No. 13-02-12052 and 16-52-55002. Research at ORNL was supported by the U.S. DOE Office of Nuclear Physics under DOE Contract No. DEAC05-00OR22725 with UT-Battelle, LLC. Research at LLNL was supported by LDRD Program Project No. 08-ERD-030, under DOE Contract No. DEAC52-07NA27344 with Lawrence Livermore National Security, LLC. This work was also supported by the U.S. DOE through a Grant No. DE-FG-05-88ER40407 (Vanderbilt University). We acknowledge the support of the RFBR Grant No. 13-02-12052 and 16-52-55002. Research at ORNL was supported by the U.S. DOE Office of Nuclear Physics under DOE Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. Research at LLNL was supported by LDRD Program Project No. 08-ERD-030, under DOE Contract No. DEAC52-07NA27344 with Lawrence Livermore National Security, LLC. This work was also supported by the U.S. DOE through a Grant No. DE-FG-05-88ER40407 (Vanderbilt University).

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Voinov, A. A., Oganessian, Y. T., Abdullin, F. S., Brewer, N. T., Dmitriev, S. N., Grzywacz, R. K., Hamilton, J. H., Itkis, M. G., Miernik, K., Polyakov, A. N., Roberto, J. B., Rykaczewski, K. P., Sabelnikov, A. V., Sagaidak, R. N., Shirokovsky, I. V., Shumeiko, M. V., Stoyer, M. A., Subbotin, V. G., Sukhov, A. M., ... Vostokin, G. K. (2018). Study of the ^249-251Cf + ⁴⁸Ca reactions: Recent results and outlook. Journal of Physics: Conference Series, 966(1), Article 012057. https://doi.org/10.1088/1742-6596/966/1/012057

@article{6655905923674870a0e9a606d2472ad4,

title = "Study of the 249-251Cf + 48Ca reactions: Recent results and outlook",

abstract = "Experiment aiming at the synthesis of heavy isotopes of Z=118 (Og) using beam of 48Ca and a target of 249-251Cf was undertaken in October 2015 - April 2016 employing the Dubna Gas-Filled Recoil Separator (FLNR JINR). The target of mixed isotopes of 249-251Cf (50.7\% of 249Cf, 12.9\% of 250Cf, and 36.4\% of 251Cf) was irradiated by 48Ca ions at two beam energies of 252 and 258 MeV with the corresponding accumulated beam doses of 1.6×1019 and 1.1×1019. A single event observed at lower beam energy was assigned to the isotope 294Og, the product of the reaction 249Cf(48Ca, 3n); its decay pattern and the observed radioactive properties of the nuclides in the decay chain reproduce in full those observed for 294Og in our earlier experiments of 2002-2005 and 2012. At higher beam energy we observed no decay chains that could be attributed to the isotopes of Og. The possibility of renewal of this experiment in the future is discussed.",

author = "Voinov, \{A. A.\} and Oganessian, \{Yu Ts\} and Abdullin, \{F. Sh\} and Brewer, \{N. T.\} and Dmitriev, \{S. N.\} and Grzywacz, \{R. K.\} and Hamilton, \{J. H.\} and Itkis, \{M. G.\} and K. Miernik and Polyakov, \{A. N.\} and Roberto, \{J. B.\} and Rykaczewski, \{K. P.\} and Sabelnikov, \{A. V.\} and Sagaidak, \{R. N.\} and Shirokovsky, \{I. V.\} and Shumeiko, \{M. V.\} and Stoyer, \{M. A.\} and Subbotin, \{V. G.\} and Sukhov, \{A. M.\} and Tsyganov, \{Yu S.\} and Utyonkov, \{V. K.\} and Vostokin, \{G. K.\}",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; 12th International Spring Seminar on Nuclear Physics: Current Problems and Prospects for Nuclear Structure ; Conference date: 15-05-2017 Through 19-05-2017",

year = "2018",

month = feb,

day = "22",

doi = "10.1088/1742-6596/966/1/012057",

language = "English",

volume = "966",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

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Voinov, AA, Oganessian, YT, Abdullin, FS, Brewer, NT, Dmitriev, SN, Grzywacz, RK, Hamilton, JH, Itkis, MG, Miernik, K, Polyakov, AN, Roberto, JB, Rykaczewski, KP, Sabelnikov, AV, Sagaidak, RN, Shirokovsky, IV, Shumeiko, MV, Stoyer, MA, Subbotin, VG, Sukhov, AM, Tsyganov, YS, Utyonkov, VK & Vostokin, GK 2018, 'Study of the ^249-251Cf + ⁴⁸Ca reactions: Recent results and outlook', Journal of Physics: Conference Series, vol. 966, no. 1, 012057. https://doi.org/10.1088/1742-6596/966/1/012057

TY - JOUR

T1 - Study of the 249-251Cf + 48Ca reactions

T2 - 12th International Spring Seminar on Nuclear Physics: Current Problems and Prospects for Nuclear Structure

AU - Voinov, A. A.

AU - Oganessian, Yu Ts

AU - Abdullin, F. Sh

AU - Brewer, N. T.

AU - Dmitriev, S. N.

AU - Grzywacz, R. K.

AU - Hamilton, J. H.

AU - Itkis, M. G.

AU - Miernik, K.

AU - Polyakov, A. N.

AU - Roberto, J. B.

AU - Rykaczewski, K. P.

AU - Sabelnikov, A. V.

AU - Sagaidak, R. N.

AU - Shirokovsky, I. V.

AU - Shumeiko, M. V.

AU - Stoyer, M. A.

AU - Subbotin, V. G.

AU - Sukhov, A. M.

AU - Tsyganov, Yu S.

AU - Utyonkov, V. K.

AU - Vostokin, G. K.

PY - 2018/2/22

Y1 - 2018/2/22

N2 - Experiment aiming at the synthesis of heavy isotopes of Z=118 (Og) using beam of 48Ca and a target of 249-251Cf was undertaken in October 2015 - April 2016 employing the Dubna Gas-Filled Recoil Separator (FLNR JINR). The target of mixed isotopes of 249-251Cf (50.7% of 249Cf, 12.9% of 250Cf, and 36.4% of 251Cf) was irradiated by 48Ca ions at two beam energies of 252 and 258 MeV with the corresponding accumulated beam doses of 1.6×1019 and 1.1×1019. A single event observed at lower beam energy was assigned to the isotope 294Og, the product of the reaction 249Cf(48Ca, 3n); its decay pattern and the observed radioactive properties of the nuclides in the decay chain reproduce in full those observed for 294Og in our earlier experiments of 2002-2005 and 2012. At higher beam energy we observed no decay chains that could be attributed to the isotopes of Og. The possibility of renewal of this experiment in the future is discussed.

AB - Experiment aiming at the synthesis of heavy isotopes of Z=118 (Og) using beam of 48Ca and a target of 249-251Cf was undertaken in October 2015 - April 2016 employing the Dubna Gas-Filled Recoil Separator (FLNR JINR). The target of mixed isotopes of 249-251Cf (50.7% of 249Cf, 12.9% of 250Cf, and 36.4% of 251Cf) was irradiated by 48Ca ions at two beam energies of 252 and 258 MeV with the corresponding accumulated beam doses of 1.6×1019 and 1.1×1019. A single event observed at lower beam energy was assigned to the isotope 294Og, the product of the reaction 249Cf(48Ca, 3n); its decay pattern and the observed radioactive properties of the nuclides in the decay chain reproduce in full those observed for 294Og in our earlier experiments of 2002-2005 and 2012. At higher beam energy we observed no decay chains that could be attributed to the isotopes of Og. The possibility of renewal of this experiment in the future is discussed.

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U2 - 10.1088/1742-6596/966/1/012057

DO - 10.1088/1742-6596/966/1/012057

M3 - Conference article

AN - SCOPUS:85043227242

SN - 1742-6588

VL - 966

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012057

Y2 - 15 May 2017 through 19 May 2017

ER -

Study of the ^249-251Cf + ⁴⁸Ca reactions: Recent results and outlook

Abstract

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