03-5-1130-2017/2023
 
Priority: 1
   
Status: Extended
 

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

Leader:     M.G. Itkis
S.I. Sidorchuk
Scientific leader:                Yu.Ts. Oganessian

Participating countries and international organizations:
Belgium, Bulgaria, CERN, China, Czech Republic, Egypt, Finland, France, Germany, India, Italy, Japan, Kazakhstan, Mongolia, Poland, Republic of Korea, Romania, Russia, Slovakia, South Africa, Spain, Sweden, Switzerland, Ukraine, United Kingdom, USA, Vietnam.


Issues addressed and main goals of research:
Synthesis of nuclei at stability limits and the investigation of their properties. Investigation of the mechanisms of heavy-ion-induced reactions. Study of the physical and chemical properties of heavy and superheavy elements

Expected results in the current year: 
  • Experiments aimed at the study of complete fusion reactions of actinide target nuclei with 48Са, 50Ti, and 54Cr ions performed at GFS-2 of the Factory of Superheavy Elements (SHE).

  • Preparation for the synthesis of elements 119 and 120.

  • Experiments aimed at studying the properties of the radioactive decay (α-, β-decay, spontaneous fission properties) of No, Rf, and Sg heavy isotopes formed in reactions with Ne, Ca, Ti, and Cr ions at the SHELS separator using the GABRIELA and SFiNX detecting systems.

  • Experiments for studying the chemical properties of Cn and Fl at the Factory of Superheavy Elements.

  • Development of a technology for manufacturing accelerator targets from stable and radioactive isotopes, which are stable under long irradiation with high-intensity heavy-ion beams.

  • Investigation of mass-energy and angular distributions of fragments produced in multi-nucleon transfer reactions. Study of the multi-body decay of low-excited heavy and superheavy nuclei. Development of physics facilities.

  • Investigation of nuclei close the limits of nucleon stability: analysis of experimental data on studying the structure of the exotic nuclei 6,7H, 7,9Не, 8,9,10Li, 27S produced earlier using radioactive beams at the ACCULINNA-2 fragment separator.

  • Experiments at MAVR aimed at studying reactions with the emission of fast charged particles near the kinematic limit in coincidence with fission fragments. Measurement of total cross sections for reactions with beams of weakly bound cluster nuclei.

  • Preparation for experiments aimed at measuring cross sections of complete fusion reactions using the movable catcher of the U-400 accelerator.

  • Theoretical studies of the mechanisms of nuclear reactions with heavy ions.

  • Development and update of the web knowledge base on nuclear physics.

 

 

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, D. A. Ibadullayev, N.D. Kovrijnykh, D.A. Kuznetsov, A.N. Polyakov, O.V. Petrushkin, R.N. Sagaidak, V.D. Shubin, V.G. Subbotin, I.V. Shirokovsky, M.V. Shumeiko, D.I. Solov'ev, L. Schlattauer, Yu.S. Tsyganov, A.A. Voinov, A.M. Zubareva
2. α-, β- and γ-spectroscopy
of heavy nuclei at the SHELS
separator
A.V. Yeremin
Data taking
  FLNR V.I. Chepigin, M.L. Chelnokov, A.V. Isaev, I.N. Izosimov, D.E. Katrasev, A.A. Kuznetsova, O.N. Malyshev, R.S. Mukhin, Yu.A. Popov, V.M. Popov, A.G. Popeko, E.A. Sokol, A.I. Svirikhin, V.A. Sbitnev, M.S. Tezekbaeva
3. Chemical properties of superheavy
elements
S.N. Dmitriev
Data taking
  FLNR N.V. Aksenov, Yu.V. Albin, A.A. Astakhov, A.Yu. Bodrov, G.A. Bozhikov, I. Chuprakov, N.S. Gustova, K.V. Lebedev, A.Sh. Madumarov, E.V. Melnik, A.V. Sabelnikov, G.Ya. Starodub, G.K. Vostokin, M.G. Voronyuk
4. Experiments at the magnetic
analyzer of superheavy atoms
MASHA
A.M. Rodin
Data analysis
  FLNR E.V. Chernysheva, A.V. Guljaev, A.V. Guljaeva, A.B. Komarov, L. Krupa, A.S. Novoselov, A.Opihal, A.V. Podshibyakin, V.S. Salamatin, S.V. Stepantsov, V.Yu. Vedeneev, S.A. Yukhimchuk, A. Kohoutova, P. Kohout 
5. Study of the processes
of fusion-fission, quasi-fission and
multi-nucleon transfer reactions.
CORSET-DEMON, CORSAR,
and MiniFOBOS set-ups
M.G. Itkis
E.M. Kozulin
Data taking
  FLNR T. Banerjee, I.N. Dyatlov, O.V. Falomkina, E. I. Galkina, Z.I. Gorya'nova, Yu.M. Itkis, D.V. Kamanin, V.V. Kirokasian, N.I. Kozulina, G.N. Knyazheva, K.A. Kulkov, E.A. Kuznetsova, C.H. Meghashree, E. Mukhamedzhanov, E.I Nikolenko, K.V. Novikov, A.A. Ostroukhov, A. Pan, I,V, Pchelintsev, Yu.V. Pyatkov, E.O. Savelieva, Yu.B. Semenov, A.N. Solodov, A.O. Strekalovsky, O.V. Strekalovskiy, R. S. Tikhomirov, I.V. Vorob'ev, A.O. Zhukova, V.E. Zhuchko 
  MLIT P.V. Goncharov, G.A. Ososkov, A.V. Uzhinsky, V.B. Zlokazov
6. Study of the structure of exotic
nuclei near and beyond the
drip-lines at the ACCULINNA-2 and COMBAS fragment separators
A.S. Fomichev
Data analysis
  FLNR A.G. Artukh, E. Batchuluun, S.G. Belogurov, A.A. Bezbakh, V. Chudoba, M.S. Golovkov, L.V. Grigorenko, A.V. Gorshkov, V. A. Gorshkov, E.M. Gazeeva, V.A. Gorshkov, A. Ismailova, G. Kaminski, S.A. Krupko, S.A. Klygin, G.A. Kononenko, K.A. May, B. Mauyey, I.A. Muzalevskiy, E.Yu. Nikolskii, Yu.L. Parfenova, W. Piatek,, S.A. Rimzhanova, Yu.M. Sereda, S.I. Sidorchuk, R.S. Slepnev, P.G. Sharov, S.V. Stepantsov, A. Swiercz, P. Szymkiewicz, G.M. Ter-Akopian, M. N. Tran, R. Wolski, A.N. Vorontsov, B. Zalewski
  BLTP S.N. Ershov, N.B. Shulgina
7. Investigation of reactions induced
by stable and radioactive ion beams leading to the formation of exotic nuclei. Development of MAVR and MULTI set-ups
Yu.E. Penionzhkevich

Data taking 
Preparation

  FLNR D.T. Aznabaev, A. Azhibekov, I. V. Butusov, T. Isataev, S.M. Lukyanov, V.A. Maslov, K.O. Mendibaev, R.V. Revenko, A. V. Shakhov, I. Sivacek, N.K. Skobelev, Yu.G. Sobolev, V.I. Smirnov, S.S. Stukalov, D.A. Testov 
8. Theoretical studies of nuclear
reaction mechanisms
A.V. Karpov
 Data taking
Data analysis
  FLNR E.A. Cherepanov, A.S. Denikin, I. A. Egorova, M.A. Naumenko, V.A. Rachkov, V.V. Samarin, V.V. Saiko
9. Development and update of the
network knowledge base on
nuclear physics
A.V. Karpov
A.S. Denikin
Data taking
  FLNR M.A. Naumenko, V.A. Rachkov, V.V. Samarin, V.V. Saiko
10. Laser spectroscopy of isotopes S.G. Zemlyanoy
Data taking
  FLNR K.A. Avvakumov, G.N. Myshinskiy, T. Tserensambuu, V.I. Zhemenik, B. Zuzaan


Collaboration

Country or International Organization City Institute or laboratory
Belgium Brussels ULB
  Leuven KU Leuven
Bulgaria Sofia INRNE BAS
CERN  Geneva CERN
China Beijing PKU
  Lanzhou IMP CAS
Czech Republic Olomouc UP
  Prague CTU
    VP
  Rez NPI CAS
Egypt Giza CU
  Shibin El Kom MU
Finland Jyvaskyla UJ
France Caen GANIL
  Orsay CSNSM
    IPN Orsay
  Saclay SPhN CEA DAPNIA
  Strasbourg CRN
    IPHC
Germany Darmstadt GSI
  Heidelberg MPIK
  Mainz JGU
  Tubingen Univ.
India Kolkata VECC
  New Delhi IUAC
  Roorkee IIT Roorkee
  Rupnagar IIT Ropar
Italy Catania INFN LNS
  Legnaro INFN LNL
  Messina UniMe
  Naples Unina
Japan Tokai JAEA
Kazakhstan Almaty IETP KazNU
    INP
  Nur-Sultan ENU
Mongolia Ulaanbaatar NRC NUM
Poland Krakow INP PAS
  Poznan AMU
  Warsaw HIL UW
    UW
Republic of Korea Daejeon IBS
Romania Bucharest IFIN-HH
Russia Dimitrovgrad SSC RIAR
  Gatchina NRC KI PNPI
  Moscow MSU
    NNRU "MEPhI"
    NRC KI
    SINP MSU
  Sarov VNIIEF
  St. Petersburg Ioffe Institute
    KRI
    SPbSU
  Voronezh VSU
Slovakia Bratislava CU
    IP SAS
South Africa Somerset West iThemba LABS
  Stellenbosch SU
Spain Huelva UHU
Sweden Goteborg Chalmers
  Lund LU
Switzerland Villigen PSI
Ukraine Kiev KINR NASU
United Kingdom Manchester UoM
USA College Station, TX Texas A&M
  East Lansing, MI MSU
  Livermore, CA LLNL
  Nashville, TN VU
  Oak Ridge, TN ORNL
Vietnam Hanoi IOP VAST
  Ho Chi Minh City VNUHCM