Q. B. Chen

Publications (4)13.99 Total impact

• Article: Evidence for Multiple Chiral Doublet Bands in $^133mathrmCe$

  A D Ayangeakaa, U Garg, M D Anthony, S Frauendorf, J T Matta, B K Nayak, D Patel, Q B Chen, S Q Zhang, P W Zhao, [......], J Meng, R V F Janssens, M P Carpenter, C J Chiara, F G Kondev, T Lauritsen, D Seweryniak, S Zhu, S S Ghugre, R Palit
  [show abstract] [hide abstract]
  ABSTRACT: Two distinct sets of chiral-partner bands have been identified in the nucleus 133Ce. They constitute a multiple chiral doublet, a phenomenon predicted by relativistic mean field (RMF) calculations and observed experimentally here for the first time. The properties of these chiral bands are in good agreement with results of calculations based on a combination of the constrained triaxial RMF theory and the particle-rotor model.
  Physical Review Letters 04/2013; 110(17):172504. · 7.37 Impact Factor
• Source

  Available from: Jie Meng

  Article: Evidence for Multiple Chiral Doublet Bands in $^{133}$Ce

  A. D. Ayangeakaa, U. Garg, M. D. Anthony, S. Frauendorf, J. T. Matta, B. K. Nayak, D. Patel, Q. B. Chen, S. Q. Zhang, P. W. Zhao, [......], J. Meng, R. V. F. Janssens, M. P. Carpenter, C. J. Chiara, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu, S. S. Ghugre, R. Palit
  [show abstract] [hide abstract]
  ABSTRACT: Two distinct sets of chiral-partner bands have been identified in the nucleus $^{133}$Ce. They constitute a multiple chiral doublet (M$\chi$D), a phenomenon predicted by relativistic mean field (RMF) calculations and observed experimentally here for the first time. The properties of these chiral bands are in good agreement with results of calculations based on a combination of the constrained triaxial RMF theory and the particle-rotor model.
  02/2013;
• Article: Collective Hamiltonian for chiral modes

  Q. B. Chen, S. Q. Zhang, P. W. Zhao, R. V. Jolos, J. Meng
  [show abstract] [hide abstract]
  ABSTRACT: A collective model is proposed to describe the chiral rotation and vibration and applied to a system with one $h_{11/2}$ proton particle and one $h_{11/2}$ neutron hole coupled to a triaxial rigid rotor. The collective Hamiltonian is constructed from the potential energy and mass parameter obtained in the tilted axis cranking approach. By diagonalizing the collective Hamiltonian with a box boundary condition, it is found that for the chiral rotation, the partner states become more degenerate with the increase of the cranking frequency, and for the chiral vibrations, their important roles for the collective excitation are revealed at the beginning of the chiral rotation region.
  Physical Review C 12/2012; · 3.31 Impact Factor
• Source

  Available from: J. M. Yao

  Article: Chiral geometry of higher excited bands in triaxial nuclei with particle-hole configuration

  Q. B. Chen, J. M. Yao, S. Q. Zhang, B. Qi
  [show abstract] [hide abstract]
  ABSTRACT: The lowest six rotational bands have been studied in the particle-rotor model with the particle-hole configuration πh11/21⊗νh11/2-1 and different values of the triaxiality parameter γ. Both constant and spin-dependent variable moments of inertia (CMI and VMI, respectively) are introduced. The energy spectra, electromagnetic transition probabilities, angular momentum components, and K distribution are examined. It is shown that, besides bands 1 and 2, the predicted bands 3 and 4 in the calculations with both CMI and VMI for atomic nuclei with γ=30° could be interpreted as chiral doublet bands.
  Physical Review C 12/2010; 82:067302. · 3.31 Impact Factor