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Synthesis and Properties of Superheavy Elements,
Structure of Nuclei at the Limits of Nucleon Stability

• Carrying out of experiments on the synthesis of heavy isotopes of element 118 (reaction ⁴⁸Ca+ ^249-251Cf) and neutron-deficient isotopes of elements Fl and 115 at the gas-filled separator.
  
  
• Studies of the decay properties of Rf, Db and Sg isotopes using the separator SHELS + GABRIELA. Preparation of an experiment on the spectroscopy studies of the decay properties of the ²⁸⁸115 isotope and its daughter products. Carrying out of experiments on measurement of the multiplicity of prompt neutrons from the spontaneous fission of Rf and Db isotopes.
  
  
• Conducting of experiments on the study of chemical properties of element 113. Conducting of experiments on the study of Cn and Fl selenides.
  
  
• Measurement of the excitation functions of the xn evaporation channels in the complete fusion reactions ⁴⁰Ar+ ¹⁴⁴Sm, ⁴⁰Ar+ ¹⁶⁴Er, ¹⁶O+ ¹⁹⁸Pt, and ¹⁸O+ ¹⁹⁸Pt. Study of the yields of products of multi-nucleon transfer reactions in the vicinity of the neutron shell closure N=126 using the mass-spectroscopic methods.
  
  
• Production and study of the properties of new neutron-rich heavy nuclei in binary multi-nucleon transfer processes and quasi-fission. Investigation of the mass-energy distributions of fragments produced in the reactions ¹⁶⁰Gd+ ¹⁸⁶W, ¹⁹⁸Pt, ^52,54Cr+ ²³²Th, and ⁸⁴Kr+ ¹⁹⁸Pt. Study of the multi-body decays of low-excited heavy nuclei.
  
  
• Investigation of the structure of the exotic nuclei ⁵H, ¹⁰Li, ¹⁷Ne, ²⁶P, and ²⁷S using radioactive beams at the ACCULINNA-1 and ACCULINNA-2 setups.
  
  
• Measurement of the total reaction cross sections for the collisions of the radioactive nuclei ^6,8Не, ^8,9,11Li, ¹⁴Be, and ⁸B with different targets in a wide range of energies, from the near-barrier up to 30 MeV/nucleon. Study of the mechanism of formation of new nuclei in reactions with beams of rare neutron-rich nuclei ( ³⁶S, ⁴⁸Ca, ⁷⁰Zn, etc.) with energies of up to 20 MeV/nucleon.
  
  
• Theoretical studies of the mechanisms of heavy-ion-induced reactions.
  
  
• Development and update of the network knowledge base on nuclear physics.
  
  
• Investigation of shapes and sizes of exotic nuclei employing laser spectroscopy methods.
  
  
• Design and construction of an ECR ion source and a hot solid-state catcher with a chemical inactive coating of the inner parts of the vacuum chambers for the MASHA separator.
  
  

List of Activities
	Activity or Experiment	Leaders	Status
	Laboratory or other Division of JINR Responsible person	Main researchers
1.	Synthesis of new isotopes of superheavy elements at DGFRS	V.K. Utyonkov	Data taking
	FLNR	F.Sh. Abdullin, A.A. Voinov, A.M. Zubareva, A.N. Polyakov, R.N. Sagaidak, V.G. Subbotin, A.M. Sukhov, Yu.S. Tsyganov, I.V. Shirokovsky, M.V. Shumeiko, N.D. Kovrijnykh
2.	-, - and - spectroscopy of heavy nuclei at the SHELS separator	A.V. Yeremin	Data taking
	FLNR	O.N. Malyshev, A.I. Svirikhin, I.N. Izosimov, V.I. Chepigin, M.L. Chelnokov, A.V. Isaev, Yu.A. Popov, A.N. Kuznetsov, A.A. Kuznetsova, A.G. Popeko, E.A. Sokol, D.E. Katrasev, V.M. Popov, V.A. Sbitnev, I.A. Belov, M.S. Tezekbaeva
3.	Chemical properties of superheavy elements	S.N. Dmitriev	Data taking
	FLNR	N.V. Aksenov, Yu.V. Albin, G.A. Bozhikov, M.G. Voronyuk, G.K. Vostokin, N.S. Gustova, I. Zvara, V.Ya. Lebedev, K.V. Lebedev, A.Sh. Madumarov, A.V. Rykhlyuk, A.V. Sabelnikov, G.Ya. Starodub
4.	Experiments at the magnetic analyzer of superheavy atoms MASHA	A.M. Rodin	Data taking
	FLNR	L. Krupa, A.V. Belozerov, E.V. Chernusheva, V.Yu. Vedeneev, A.V. Guljaev, A.V. Guljaeva, D. Kamas, A.B. Komarov, S. Motychak, A.V. Podshibyakin, V.S. Salamatin, S.V. Stepantsov, A.S. Novoselov, S.A. Yukhimchuk
5.	Study of the processes of fusion-fission, quasi-fission and multi-nucleon transfer reactions. CORSET-DEMON, CORSAR, and MiniFOBOS setups	M.G. Itkis	Data taking
	FLNR	E.M. Kozulin, A.A. Bogachev, Yu.M. Itkis, E.M. Gazeeva, I.N. Dyatlov, G.N. Knyazheva, N.I. Kozulina, K.V. Novikov, E.O. Savelieva, J.M. Harka, D.V. Kamanin, I.A. Alexandrova, A.A. Alexandrov, Z.I. Gorya'nova, V.E. Zhuchko, E.A. Kuznetsova, Yu.V. Pyatkov, Yu.B. Semenov, A.N. Solodov, A.O. Strekalovsky, O.V. Strekalovskiy, I.V. Vorob'ev, O.V. Falomkina, P. Steinegger, I. Chuprakov
6.	Study of the structure of exotic nuclei near and beyond the drip-lines at the ACCULINNA and COMBAS fragment separators	A.S. Fomichev	Data taking
	FLNR	G.M. Ter-Akopian, M.S. Golovkov, L.V. Grigorenko, A.V. Gorshkov, V.A. Gorshkov, S.A. Krupko, A.A. Bezbakh, Yu.L. Parfenova, S.I. Sidorchuk, R.S. Slepnev, G. Kaminsky, V. Chudoba, R. Wolski, P.G. Sharov, S.A. Rimzhanova, S.G. Belogurov, Yu.M. Sereda, A.G. Artukh, A.N. Vorontsov, S.A. Klygin, G.A. Kononenko, D.A. Kislukha, N.I. Tarantin, E. Batchuluun
	BLTP	S.N. Ershov, I.A. Egorova
7.	Investigation of reactions induced by stable and radioactive ion beams leading to the formation of exotic nuclei. Development of MAVR and MULTI setups	Yu.E. Penionzhkevich	Data taking
	FLNR	D.T. Aznabaev, M.P. Ivanov, S.M. Lukyanov, V.A. Maslov, K.O. Mendibaev, N.K. Skobelev, Yu.G. Sobolev, Z.D. Pokrovskaya, R.V. Revenko, V.I. Smirnov, D.A. Testov
8.	Theoretical studies of nuclear reaction mechanisms	A.V. Karpov
	FLNR	A.S. Denikin, V.V. Samarin, M.A. Naumenko, E.A. Cherepanov, Yu.A. Muzichka, V.A. Rachkov, V.V. Saiko
9.	Development and update of the network knowledge base on nuclear physics	A.V. Karpov A.S. Denikin	Data taking
	FLNR	V.V. Samarin, V.A. Rachkov, M.A. Naumenko, V.V. Saiko
	LIT	V.V. Korenkov, P.V. Zrelov, E.I. Alexandov
10.	Laser spectroscopy of isotopes	S.G. Zemlyanoy	Data taking
	FLNR	V.I. Zhemenik, G.V. Myshinskiy, K.P. Marinova, K.A. Avvakumov

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