LOW-LYING EXCITATION MODES IN DEFORMED NEUTRON-RICH NUCLEI
作者： KENICHI YOSHIDA
DOI: 10.1142/S0218301308011914
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摘要: Low-frequency modes of excitation in deformed neutron-rich nuclei are studied by the use quasiparticle-random-phase approximation (QRPA) based on coordinate-space Hartree–Fock–Bogoliubov formalism. We investigate microscopic structure low-lying Kπ = 0+ Mg, Cr and Fe isotopes. It is found that spatially extended neutron quasiparticle wave functions around Fermi level brings about a striking enhancement transition strengths. also fluctuation pairing field plays an important role generating coherence among two-quasiparticle excitations neutron. Recent progress towards self-consistent QRPA calculation using Skyrme density functional presented.
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sci-hub.se 参考文章(65)
S. Péru, H. Goutte, Role of deformation on giant resonances within the quasiparticle random-phase approximation and the Gogny force Physical Review C. ,vol. 77, pp. 044313- ,(2008) , 10.1103/PHYSREVC.77.044313
P. Sarriguren, E. Moya de Guerra, A. Escuderos, A.C. Carrizo, β decay and shape isomerism in 74Kr Nuclear Physics. ,vol. 635, pp. 55- 85 ,(1998) , 10.1016/S0375-9474(98)00158-4
J. Dobaczewski, H. Flocard, J. Treiner, Hartree-Fock-Bogolyubov description of nuclei near the neutron-drip line Nuclear Physics. ,vol. 422, pp. 103- 139 ,(1984) , 10.1016/0375-9474(84)90433-0
Ikuko Hamamoto, Effective pair-gap of weakly-bound neutrons in deformed nuclei Physical Review C. ,vol. 71, pp. 037302- ,(2005) , 10.1103/PHYSREVC.71.037302
Ikuko Hamamoto, Dominance of low- ℓ component in weakly bound deformed single-neutron orbits Physical Review C. ,vol. 69, pp. 041306- ,(2004) , 10.1103/PHYSREVC.69.041306
Kouichi Hagino, Hiroyuki Sagawa, Continuum QRPA in the coordinate space representation Nuclear Physics. ,vol. 695, pp. 82- 94 ,(2001) , 10.1016/S0375-9474(01)01122-8
Li-Gang Cao, Zhong-Yu Ma, Low-lying dipole modes in Ne-26,Ne-28 in the quasiparticle relativistic random phase approximation Physical Review C. ,vol. 71, pp. 034305- ,(2005) , 10.1103/PHYSREVC.71.034305
Ikuko Hamamoto, Ben R. Mottelson, Weakly bound s(1/2) neutrons in the many-body pair correlation of neutron drip line nuclei Physical Review C. ,vol. 69, pp. 064302- ,(2004) , 10.1103/PHYSREVC.69.064302
R.B. Firestone, Nuclear Data Sheets for A = 24 Nuclear Data Sheets. ,vol. 108, pp. 2319- 2392 ,(2007) , 10.1016/J.NDS.2007.10.001
AN Deacon, SJ Freeman, RVF Janssens, FR Xu, MP Carpenter, IR Calderin, P Chowdhury, NJ Hammond, T Lauritsen, CJ Lister, D Seweryniak, JF Smith, SL Tabor, BJ Varley, S Zhu, None, Changes in νg9/2 shape polarisation across the odd neutron-rich Cr isotopes Physics Letters B. ,vol. 622, pp. 151- 158 ,(2005) , 10.1016/J.PHYSLETB.2005.07.005