01-3-1136-2019/2023
 
Priority: 1
   
Status: In-progress

Theory of Nuclear Systems
  

Leaders:     N.V. Antonenko
S.N. Ershov
A.A. Dzhioev

Participating Countries and International organizations:
Armenia, Austria, Belarus, Belgium, Brazil, Bulgaria, Canada, China, Czech Republic, Egypt, France, Germany, Greece, Hungary, India, Iran, Italy, Japan, Kazakhstan, Lithuania, Moldova, Norway, Poland, Republic of Korea, Romania, Russia, Serbia, Slovakia, South Africa, Spain, Sweden, Taiwan, Ukraine, United Kingdom, USA, Uzbekistan.


Issues addressed and main goals of research:
Suggestion of new theoretical approaches for description and prediction of properties of superheavy, unstable nuclei and exotic nuclear systems, calculation of their characteristics; improvement of models for explanation of mechanisms of reactions of nuclei with particles and nuclei at low and intermediate energies; establishment of universal laws in low-dimensional small-particle systems and small-particle systems at ultra-low energies; development of the two-stage hybrid model of nuclear collisions at relativistic energies; study of nonlinear quantum processes in the interaction of photons with ultrashort high-frequency laser pulses.

Expected main results in the current year:
  • Calculations of β-decay and electron capture half-lives for superheavy deformed nuclei.
     
    Development of the formalism of the coupling with complex configurations within self-consistent nuclear models.
     
    Investigation of Coriolis mixing in dipole states of light deformed nuclei.
     
    Study of the beta-delayed gamma-spectroscopy of thecadmium isotope 126Cd.
     
    Study of the properties of isoscalar giant monopole resonance with using elements of random matrix theory.
     
    Estimation of the influence of pair correlation strength on the formation of nuclear scissors states within the framework of the Wigner function moments method.
     
    Study of the spin-flip resonance and 2+ collective excitations by the Wigner function moments method.
     
    Analysis of isomeric states in heavy nuclei and their influence on the α-decay spectrum.
     
  • Calculation and analysis of cross sections of the formation of superheavy nuclei in different evaporation channels.
     
    Comparative analysis of cross sections of the formation of nuclei with Z=119 and 120 in reactions with the use of 50Ti and 54Cr beams.
     
    Study of the mass and energy distributions of transactinide fission fragments.
     
    Analysis of the cross section of fusion reactions of interest in astrophysics.
     
    Study of qubits in external fields.
     
    Calculation of spontaneous fission inhibiting factors for odd nuclei in the cluster approach.
     
    Analysis of the contribution of various n-particle n-hole configurations in the formation of the spreading width of giant nuclear resonances.
    Description of the decay widths ofgiant monopole and quadrupole resonances inheavy nuclei within random matrix theory. Study of the evolution of mirror-asymmetric deformation in isotopic chains of actinides and rare-earth nuclei.
     
  • Investigation of the early stage tunneling dynamics of ultracold two-atom systems.
     
    Investigation of a highly excited state of the 1p shell nuclei.
     
    Сalculationof bound states and scattering processes in two- and three-atom systems formed of the rare gas atoms.
     
    Analysis of the three-body energy spectra of two-component systems with zero-range interactions in one and two dimensions.
     
    Study of the spectra of low-lying states for a chain of zirconium isotopes within the geometric collective model.
     
    Development of computational schemes based on two-dimensional discrete-variable representations in application to few-body quantum systems.
     
    Proof of bounds for the maximal possible speed of  subspace time evolution generated by unbounded Hamiltonians.
     
    Justification of the use of single and double Compton ionization of atoms as a new method for dynamical spectroscopy of the electron momentum distribution.
     
    Analysis of the quasi-two-dimensional motion of two interacting hydrogen atoms on a liquid helium film.
     
    Study of the analytic structure of the multi-channel R-matrix.
     
    Study of dynamics of a hydrogen atom in a strong elliptically polarized laser field within the time-dependent numerical approach.
     
    Study of total reflection induced by the super-interference phenomenon
     
    Analysis of the effect of deformation on the breakup of the 11Be halo nucleus within the time-dependent approach.
     
    Correct formulation of the entangled exit channels in the model of incoming wave boundary conditions in sub-barrier heavy-ion fusion reactions.

 

  • Theoretical analysis of the proton- and nucleus-nucleus scattering cross-sections over some target-nuclei in the energy range from 30 MeV to 1 GeV/nucleon basing on the development of the respective microscopic model of optical potential.
     
    Study of essentially multiphoton quantum processes expected in reactions induced by intense short and ultrashort laser pulses with arbitrary polarization.
     
    Application of non-extensive statistical methods to describe the particle production andtransverse momentum distributions of hadrons in heavy ion-proton and proton-proton collisions.
     
    Study of proton-deuteron elastic scattering in the framework of the relativistic Bethe-Salpeter-Faddeev formalism with a separable kernel. Investigation of the polarization characteristics in this reaction.
     
    Investigation of the properties ofbaryon and pseudo-scalar mesons at finite temperature and density in the framework of three-flavour Polyakov-Nambu-Jona-Lasinio model.
     
    Investigation of the cross sections of Y absorption and Y production in BB-collision in the framework of the covariant quark model with SU(5) Lagrangian including anomalous interactions. 
     
    Analysisof the Bethe-Salpeter solutions in coordinate space, establishment of some patterns and investigation of abnormal solutions.
     
    Study of the short-range deuteron structure and of the color transparency effect in proton-deuteron interactions at relativistic energies within the generalized eikonal approximation.

 

 

List of Activities
  Activity or experiment Leaders
 
    Laboratory or other
  Division of JINR
  Main researchers
1. Microscopic models for exotic
nuclei and nuclear astrophysics
V.V. Voronov
A.A. Dzhioev
J. Kvasil
 
  BLTP
 
N.N. Arsenyev, E.B. Balbutsev, H. Ganev, V.A. Kuz'min, L.A. Malov, I.V. Molodtsova, V.O. Nesterenko, A.P. Severyukhin, V.M. Shilov, S.V. Sidorov,  A.V. Sushkov, A.I. Vdovin, 3 students
  MLIT
 
N.Yu. Shirikova
  FLNP
 
A.M. Sukhovoi
2. Low-energy nuclear dynamics
and properties of nuclear systems
S.N. Ershov
N.V. Antonenko
R.V. Jolos
 
  BLTP
 
G.G. Adamian, A.V. Andreev, A.N. Bezbakh, Sh. Kalandarov, V.G. Kartavenko, R.G. Nazmitdinov,  A.K. Nasirov, H. Pasca,  A. Rahmatinedzhad, I.S. Rogov, T.M. Shneidman, B. Urazbekov, 3 students
  FLNR
 
L.V. Grigorenko, Yu.E. Penionzhkevich, A.I. Svirikhin
  DLNP A.S. Zhemchugov
3. Quantum few-body systems A.K. Motovilov
A.S. Melezhik
 
  BLTP
 
 I. Ishmukhamedov, D. Janseitov, E.A. Kolganova, V.N. Kondratyev,  E.A. Koval, A.V. Malykh,  E.V. Mardyban, Yu.V. Popov, V.V. Pupishev, S.A. Rakityanskiy, S.A. Shadmehri, E.A. Solov'ev,  D. Valiolda, S.I. Vinitsky, 3 students
  DLNP
 
O.I. Kartavtsev
  MLIT
 
O. Chulunbaatar, A.A. Gusev
4. Relativistic nuclear dynamics
and nonlinear quantum processes
V.V. Burov
M. Gaidarov
S.G.Bondarenko
 
  BLTP
 
M.Baznat, S.M.Dorkin, A.V. Frisen, L.P. Kaptari, A.B. Larionov, V.K. Lukyanov, A.S. Parvan, A.I. Titov,  V.D. Toneev, S.A. Yur'ev, 1 student
  MLIT
 
Yu.L. Kalinovskiy, K.V. Lukyanov, E.V. Zemlyanaya
  VBLHEP
 
V.P. Ladygin, N.B. Ladygina, A.I. Malakhov,  N.M. Piskunov, Yu.A. Panebratsev, E.P. Rogochaya

 Collaboration

Country or International Organization City Institute or laboratory
Armenia Yerevan RAU
    YSU
Austria Innsbruck Univ.
Belarus Minsk IP NASB
Belgium Brussels ULB
    VUB
  Louvain-la-Neuve UCL
Brazil Florianopolis, SC UFSC
  Niteroi, RJ UFF
  Sao Jose dos Campos, SP ITA
  Sao Paulo, SP UEP
Bulgaria Sofia INRNE BAS
    NBU
Canada Hamilton, ON McMaster
  Saskatoon U of S
  Waterloo WLU
China Beijing CIAE
    ITP CAS
    PKU
Czech Republic Prague CU
Egypt Giza CU
France Bordeaux UB
  Caen GANIL
  Orsay CSNSM
    IJCLab
Germany Berlin HZB
  Bielefeld Univ.
  Bonn UniBonn
  Cologne Univ.
  Darmstadt GSI
    TU Darmstadt
  Dresden HZDR
  Erlangen FAU
  Frankfurt/Main Univ.
  Giessen JLU
  Hamburg Univ.
  Leipzig UoC
  Mainz JGU
  Regensburg UR
  Rostock Univ.
  Siegen Univ.
Greece Athens INP NCSR "Demokritos"
Hungary Budapest Wigner RCP
  Debrecen Atomki
India Chandigarh PU
  Kasaragod CUK
  New Delhi IUAC
Iran Zanjan IASBS
Italy Bologna BRC ENEA
  Catania INFN LNS
  Messina UniMe
  Naples INFN
  Perugia INFN
  Turin UniTo
Japan Kobe Kobe Univ.
  Morioka Iwate Univ.
  Osaka Osaka Univ.
    RCNP
Kazakhstan Almaty INP
    KazNU
Lithuania Kaunas VMU
Mexico Mexico City UNAM
Moldova Chisinau IAP
Norway Bergen UiB
  Oslo UiO
Poland Krakow INP PAS
  Lublin UMCS
  Otwock (Swierk) NCBJ
  Warsaw UW
Republic of Korea Daegu KNU
  Daejeon IBS
  Jeonju JBNU
  Seoul SNU
Romania Bucharest IFIN-HH
    UB
Russia Dolgoprudny MIPT
  Gatchina NRC KI PNPI
  Khabarovsk PNU
  Moscow MSU
    NNRU "MEPhI"
    NRC KI
    PFUR
    SINP MSU
  Moscow, Troitsk INR RAS
  Omsk OmSU
  Saratov SSU
  St. Petersburg SPbSU
  Vladivostok FEFU
Serbia Belgrade IPB
Slovakia Bratislava CU
    IP SAS
South Africa Johannesburg WITS
  Pretoria UP
  Somerset West iThemba LABS
  Stellenbosch SU
Spain Palma UiB
Sweden Goteborg Chalmers
  Lund LU
Taiwan Taipei NTU
Ukraine Kiev BITP NASU
    KINR NASU
    NUK
United Kingdom Guildford Univ.
USA Lemont, IL ANL
  Los Alamos, NM LANL
  Notre Dame, IN ND
  Raleigh, NC NCCU
  University Park, PA Penn State
Uzbekistan Namangan NamMTI
  Tashkent Assoc. P.-S. PTI
    IAP NUU
    INP AS RUz