An interacting boson model description of octupole states in nucleic

Barfield, A. F.; Barrett, B. R.; Wood, John L.; Scholten, Olaf

doi:10.1016/0003-4916(88)90016-4

Cited by 67 publications

(24 citation statements)

References 73 publications

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“…1. These are experimental data from [26], our calculations within the QPNM, the IBM calculations in [26] and the calculations [37] within the IBM -l+f boson model. In the calculations [26] the B(E3) values were normalized to the experimental value of the 3-11 state.…”

Section: Distribution Of the Ea-strength Among Low-lying Statesmentioning

confidence: 98%

Description of low-lying vibrationalK ??0+ states of deformed nuclei in the quasiparticle-phonon nuclear model

Soloviev

Shirikova

1989

Z. Physik A - Atomic Nuclei

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The QPNM equations are derived taking account of p-h and p-p interactions. The calculated quadrupole, octupole and hexadecapole vibrational states in 168Er, 172yb and tVSHf are found to be in reasonable agreement with experimental data. It is shown that distribution of the E2 strength in some deformed nuclei differs from the standard one. There are cases when for a given K ~ the E2 strength is concentrated not on the first but on higher-lying states. The assertion made earlier about the absence of collective two-phonon states in deformed nuclei is confirmed. PACS: 21.60.Ev; 21.60.Jz

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Section: Distribution Of the Ea-strength Among Low-lying Statesmentioning

confidence: 98%

Description of low-lying vibrationalK ??0+ states of deformed nuclei in the quasiparticle-phonon nuclear model

Soloviev

Shirikova

1989

Z. Physik A - Atomic Nuclei

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“…The HamiltonianĤ IBM of Eq. (1) can be derived from a microscopic octupole-octupole interaction between proton and neutron bosons by mapping the totally symmetric state in the IBM-2 space onto the equivalent one in the IBM-1 space [65]. We neglect the dipole-dipole interaction…”

Section: Frameworkmentioning

confidence: 99%

Spectroscopy of quadrupole and octupole states in rare-earth nuclei from a Gogny force

2015

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Collective quadrupole and octupole states are described in a series of Sm and Gd isotopes within the framework of the interacting boson model (IBM), whose Hamiltonian parameters are deduced from mean-field calculations with the Gogny energy density functional. The link between both frameworks is the (β 2 β 3 ) potential energy surface computed within the Hartree-Fock-Bogoliubov framework in the case of the Gogny force. The diagonalization of the IBM Hamiltonian provides excitation energies and transition strengths of an assorted set of states including both positive-and negative-parity states. The resultant spectroscopic properties are compared with the available experimental data and also with the results of the configuration mixing calculations with the Gogny force within the generator coordinate method (GCM). The structure of excited 0 + states and its connection with double-octupole phonons is also addressed. The model is shown to describe the empirical trend of the low-energy quadrupole and octupole collective structure fairly well and turns out to be consistent with GCM results obtained with the Gogny force.

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“…There have been intensive interests in the studies of octupole degree of freedom in nuclear structure recently both experimentally [1][2][3][4][5][6][7][8][9] and theoretically [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…In the boson model, negative parity states are described by the spdf interacting boson model [10][11][12]14,13,16,17,[19][20][21]28] or the sdf-IBM [22][23][24][25][26]. Otsuka [14] showed microscopically that p and f bosons are important in the low-lying negative parity states of even-even nuclei.…”

Section: Introductionmentioning

confidence: 99%