Enhanced α decays to negative-parity states in even-even nuclei with octupole deformation

被引：7
作者：
Seif, W. M. [1 ,2 ]
Adel, A. [1 ]
Antonenko, N. V. [3 ]
Adamian, G. G. [3 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Phys, Giza 12613, Egypt
[2] Cairo Univ, Fac Postgrad studies Nanotechnol, Giza 12588, Egypt
[3] Joint Inst Nucl Res, Dubna 141980, Russia
来源：
PHYSICAL REVIEW C | 2023年 / 107卷 / 04期
关键词：
INTRINSIC REFLECTION ASYMMETRY; COULOMB-EXCITATION; FUSION; ISOTOPES; PART; MASS;
D O I：
10.1103/PhysRevC.107.044601
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The alpha decays of even-even Ra, Th, U, and Pu isotopes to ground and excited states of daughter nuclei with neutron numbers of N = 130-140 are investigated. These nuclei show some enhanced alpha-branching ratios to negative-parity states (1-, 3-), compared with the decays to positive-parity states (4+) of comparable energy. This enhancement correlates with appearance of static octupole deformation, rather than spherical nuclear shapes or dynamic asymmetric vibrational states. The highly enhanced branching ratios occur for alpha decays to the 1- and 3- states of the Ra isotopes with N = 134, 136, 138, then to 1- state in Th (N = 134-140) and to the 3- state in Rn (N = 132-136) isotopes.
引用
收藏
页数：9
相关论文
共 74 条
  • [1] Decay out of superdeformed bands in the mass region A≈190 within a cluster approach -: art. no. 054310
    Adamian, GG
    Antonenko, NV
    Jolos, RV
    Palchikov, YV
    Scheid, W
    Shneidman, TM
    [J]. PHYSICAL REVIEW C, 2004, 69 (05): : 054310 - 1
  • [2] Proton radioactivity and α-decay of neutron-deficient nuclei
    Adel, A.
    Abdulghany, A. R.
    [J]. PHYSICA SCRIPTA, 2021, 96 (12)
  • [3] Systematics of α-decay fine structure in odd-mass nuclei based on a finite-range nucleon-nucleon interaction
    Adel, A.
    Alharbi, T.
    [J]. NUCLEAR PHYSICS A, 2018, 975 : 1 - 18
  • [4] Fine structure in α decay of even-even nuclei using a finite-range nucleon-nucleon interaction
    Adel, A.
    Alharbi, T.
    [J]. PHYSICAL REVIEW C, 2015, 92 (01):
  • [5] Effect of neutron rearrangement on subbarrier fusion reactions
    Adel, A.
    Rachkov, V. A.
    Karpov, A. V.
    Denikin, A. S.
    Ismail, M.
    Seif, W. M.
    Ellithi, A. Y.
    [J]. NUCLEAR PHYSICS A, 2012, 876 : 119 - 130
  • [6] Octupole deformation in neutron-rich actinides and superheavy nuclei and the role of nodal structure of single-particle wavefunctions in extremely deformed structures of light nuclei
    Afanasjev, A. V.
    Abusara, H.
    Agbemava, S. E.
    [J]. PHYSICA SCRIPTA, 2018, 93 (03)
  • [7] Octupole deformation in the ground states of even-even nuclei: A global analysis within the covariant density functional theory
    Agbemava, S. E.
    Afanasjev, A. V.
    Ring, P.
    [J]. PHYSICAL REVIEW C, 2016, 93 (04)
  • [8] α decay of 97249Bk and levels in 95245Am
    Ahmad, I.
    Greene, J. P.
    Kondev, F. G.
    Zhu, S.
    Carpenter, M. P.
    Janssens, R. V. F.
    Boll, R. A.
    Ezold, J. G.
    Van Cleve, S. M.
    Browne, E.
    [J]. PHYSICAL REVIEW C, 2013, 87 (05):
  • [9] Lifetime measurement of excited states in 144Ce: Enhanced E1 strengths in a candidate for octupole deformation
    Beckers, M.
    Mueller-Gatermann, C.
    Blazhev, A.
    Braunroth, T.
    Dewald, A.
    Fransen, C.
    Goldkuhle, A.
    Kornwebel, L.
    Litzinger, J.
    von Spee, F.
    Zell, K-O
    [J]. PHYSICAL REVIEW C, 2020, 102 (01)
  • [10] BLONS J, 1989, NUCL PHYS A, V502, pC121, DOI 10.1016/0375-9474(89)90658-1
12345678