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Chinese Physics C> 2006, Vol. 30> Issue(S2) : 183-185 

Study of Halo for the Ground State and Proton Widths for the First Two Excited States of 27P

  •  China Institute of Atomic Energy, Beijing 102413, China

  • The neutron asymptotic normalization coefficients (ANCs) for the virtual decay 27Mg→26Mg+n are determined from the angular distributions of the 26Mg(d,p)27Mg reaction leading to the ground, first and second excited states of 27Mg respectively, based on distorted wave Born approximation analysis (DWBA). According to charge symmetry of mirror nuclei, we extract the proton ANC and spectroscopic factor for 27P ground state and the proton widths of the first and second excited states of 27P. The rms radius of valence proton is then derived. Our result indicates that the 27P ground state has a proton halo structure.
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    [1] . Tanihata I, Hamagaki H, Hashimoto O et al. Phys. Rev.Lett., 1085, 55: 2676-26792. FANG D Q, SHEN W Q, FENG J et al. Eur. Phys. J.,2001, A12: 335-3393. ZHANG H Y, SHEN W Q, REN Z Z et al. Nucl. Phys.,2002, A707: 303-3244. LIU Z H, RUAN M, ZHAO Y L et al. Phys. Rev., 2004,C69: 034326-1-034326-65. Herndl H, Grres J, Wiecher M et al. Phys. Rev., 1995,C52: 1078-10946. Kunz P D. Computer Code DWUCK4 (unpublished)7. Meurders F, Steld A Van Der. Nucl. Phys., 1974, A230:317-3288. Perey F G. Phys. Rev., 1963, 131: 745-7639. Becchetti F D, Greenlees G W. Phys. Rev., 1969, 182:1190-120910. Perey C M, Perey F G. Atomic Data and Nuclear DataTables, 1976, 17: 1-10111. Timofeyuk N K, Johnson R C, Mukhamedzhanov A M.Phys. Rev. Lett., 2003, 91: 232501-1-232501-412. GUO B, LI Z H, LIU W P et al. Nucl. Phys., 2005, A761:162-17213. REN Z Z, Mittig W, Sarazin F. Nucl. Phys., 1999, A652:250-27014. GUO B, LI Z H, BAI X X et al. Phys. Rev., 2006, C73:048801-1-048801-4

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GUO Bing, LI Zhi-Hong, LIU Wei-Ping and BAI Xi-Xiang. Study of Halo for the Ground State and Proton Widths for the First Two Excited States of 27P[J]. Chinese Physics C, 2006, 30(S2): 183-185.
GUO Bing, LI Zhi-Hong, LIU Wei-Ping and BAI Xi-Xiang. Study of Halo for the Ground State and Proton Widths for the First Two Excited States of 27P[J]. Chinese Physics C, 2006, 30(S2): 183-185. shu
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Received: 2006-10-18
Revised: 1900-01-01
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Study of Halo for the Ground State and Proton Widths for the First Two Excited States of 27P

    Corresponding author: GUO Bing,
  • China Institute of Atomic Energy, Beijing 102413, China
  • Received Date: 2006-10-18
  • Accepted Date: 1900-01-01
  • Available Online: 2006-01-03

Abstract: The neutron asymptotic normalization coefficients (ANCs) for the virtual decay 27Mg→26Mg+n are determined from the angular distributions of the 26Mg(d,p)27Mg reaction leading to the ground, first and second excited states of 27Mg respectively, based on distorted wave Born approximation analysis (DWBA). According to charge symmetry of mirror nuclei, we extract the proton ANC and spectroscopic factor for 27P ground state and the proton widths of the first and second excited states of 27P. The rms radius of valence proton is then derived. Our result indicates that the 27P ground state has a proton halo structure.

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