03-5-1130-2017/2021
 
Priority: 1
   
Status: In-progress


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

 

Leader:     M.G. Itkis
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, Romania, Russia, Slovakia, South Africa, Spain, Sweden, Switzerland, Ukraine, United Kingdom, USA, Vietnam. 

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

Expected major results in the current year:

  • Experiments for studying complete fusion reactions with 50Ti. 

  • Preparing for and conducting first test experiments on the synthesis of isotopes of element 115 (Mc) in the 48Ca + 243Am reaction at the SHE Factory. 

  • Experiments on the measurement of the multiplicity of prompt neutrons from the spontaneous fission of Sg isotopes in the reactions with 54Cr and heavy isotopes of Rf in the reactions with 22Ne.
    Searching for rare reaction channels with the evaporation of charged particles, studying the decay properties of heavy Rf and Sg isotopes using the separator SHELS + GABRIELA.
    Preparation for experiments on the spectroscopy studies of the decay properties of the 288Mc nuclide and its daughter products. 

  • Experiments on the study of the chemical properties of element 113 in the 48Ca + 243Am reaction. Preparation for experiments aimed to study the chemistry of SHE at the SHE Factory. 

  • Measurements of the cross-sections of xn channels for the complete fusion reactions 40Ar+ 144Sm, 40Ar+ 164Er, 40Ca+ 144Nd, and 48Ca+ 142Nd. 

  • Investigation of the mass-energy distributions of fragments produced in the reactions 18O+ 232Th, 238U, 22Ne+ 232Th, 238U, and48Ca+ 154Sm.
    Study of multi-body decays of low-excited heavy nuclei. 
    Study of multicluster decay of heavy and superheavy nuclei.
    Development of physics set-ups. 

  • Investigation of the structure of the exotic nuclei 7Н, 17Ne, and 26Si using radioactive beams at the ACCULINNA-1 and ACCULINNA-2 set-ups. 

  • Experiments with the 16О and 22Ne heavy-ion beams. Measurement of yields of multi-nucleon transfer reaction products. Measurement of total reaction cross-sections and those of individual channels using high-efficiency methods for registration and identification of products with low-intensity beams of exotic nuclei (10 3-10 5 s -1). 

  • 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. 

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, N.D. Kovrijnykh, D.A. Kuznetsov, A.N. Polyakov, O.V. Petrushkin, R.N. Sagaidak, V.G. Subbotin, A.M. Sukhov, I.V. Shirokovsky, M.V. Shumeiko, A.S. Sviridchenkov, D.I. Solov'ev, L. Schlattauer, Yu.S. Tsyganov, A.A. Voinov, A.M. Zubareva
2. -, - and gamma- 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.N. Kuznetsov, A.A. Kuznetsova, O.N. Malyshev, 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.Yu. Bodrov, G.A. Bozhikov, N.S. Gustova, V.Ya. Lebedev, K.V. Lebedev, A.Sh. Madumarov, E.V. Melnik, A.V. Rykhlyuk, A.V. Sabelnikov, G.Ya. Starodub, G.K. Vostokin, M.G. Voronyuk, I. Zvara
4. Experiments at the magnetic
analyzer of superheavy atoms 
MASHA
A.M. Rodin
Data taking
  FLNR E.V. Chernusheva, A.V. Guljaev, A.V. Guljaeva, D. Kamas, 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
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
Data taking
  FLNR A.A. Alexandrov, I.A. Alexandrova, I.N. Dyatlov, O.V. Falomkina, Z.I. Gorya'nova, Yu.M. Itkis, D.V. Kamanin, V.V. Kirokasian, E.M. Kozulin, N.I. Kozulina, G.N. Knyazheva, E.A. Kuznetsova, K.V. Novikov, A. Pan, I,V, Pchelintsev, Yu.V. Pyatkov, E.O. Savelieva, Yu.B. Semenov, A.N. Solodov, A.O. Strekalovsky, O.V. Strekalovskiy, I.V. Vorob'ev, A.O. Zhukova, V.E. Zhuchko
  LIT 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-1, 
ACCULINNA-2 and COMBAS
fragment separators
A.S. Fomichev
Data taking
  FLNR A.G. Artukh, E. Batchuluun, S.G. Belogurov, A.A. Bezbakh, N. Carjan, V. Chudoba, M.S. Golovkov, L.V. Grigorenko, A.V. Gorshkov, E.M. Gazeeva, V.A. Gorshkov, G. Kaminski, S.A. Krupko, S.A. Klygin, G.A. Kononenko, D.A. Kislukha, K.A. May, B. Mauyey, I.A. Muzalevskiy, E.Yu. Nikolskii, Yu.L. Parfenova, S.A. Rimzhanova, Yu.M. Sereda, S.I. Sidorchuk, R.S. Slepnev, P.G. Sharov, A. Serikov, G.M. Ter-Akopian, 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
  FLNR D.T. Aznabaev, M.P. Ivanov, S.M. Lukyanov, V.A. Maslov, K.O. Mendibaev, Z.D. Pokrovskaya, R.V. Revenko, N.K. Skobelev, Yu.G. Sobolev, I. Sivacek, V.I. Smirnov, D.A. Testov
8. Theoretical studies of nuclear
reaction mechanisms
A.V. Karpov
 
  FLNR E.A. Cherepanov, A.S. Denikin, Yu.A. Muzichka, 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
  LIT E.I. Alexandov, V.V. Korenkov, P.V. Zrelov
10. Laser spectroscopy of isotopes S.G. Zemlyanoy
Data taking
  FLNR K.A. Avvakumov, G.N. Myshinskiy, 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 Lanzhou IMP CAS  
  Beijing PKU  
Czech Republic Prague CTU  
    VP  
  Olomouc UP  
  Rez NPI CAS  
Egypt Giza CU  
  Al-Minufya MU  
Finland Jyvaskyla UJ  
France Caen GANIL  
  Orsay CSNSM  
    IPN Orsay  
  Saclay SPhN CEA DAPNIA  
  Strasbourg CRN  
    IPHC  
Germany Berlin HZB  
  Darmstadt GSI  
  Mainz JGU  
  Tubingen Univ.  
India New Delhi IUAC  
  Kolkata VECC  
  Manipal MU  
Italy Catania INFN LNS  
  Legnaro INFN LNL  
  Messina UniMe  
  Naples Unina  
Japan Wako RIKEN  
  Tokai JAEA  
Kazakhstan Almaty INP  
    IETP KazNU  
  Astana ENU  
Mongolia Ulaanbaatar NRC NUM  
Poland Warsaw UW  
    IEP WU  
  Krakow NINP PAS  
  Poznan AMU  
Romania Bucharest IFIN-HH  
Russia Moscow IPCE RAS  
    MSU  
    MUCTR  
    NNRU "MEPhI"  
    NRC KI  
    SINP MSU  
  Moscow, Troitsk INR RAS  
  Moscow, Zelenograd RIMST  
  Dimitrovgrad SSC RIAR  
  Gatchina NRC KI PNPI  
  Sarov VNIIEF  
  St. Petersburg Ioffe Institute  
    KRI  
  Voronezh VSU  
Slovakia Bratislava CU  
    IP SAS  
South Africa Cape Town iThemba LABS  
  Pretoria UNISA  
  Stellenbosch SU  
Spain Madrid CSIC  
  Huelva UHU  
Switzerland Villigen PSI  
Sweden Goteborg Chalmers  
  Lund LU  
Ukraine Kiev KINR NASU  
United Kingdom Manchester UoM  
USA Argonne, IL ANL  
  College Station, TX Texas A&M  
  East Lansing, MI MSU  
  Livermore, CA LLNL  
  Nashville, TN VU  
  Oak Ridge, TN ORNL  
Vietnam Hanoi IOP VAST