QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING

HOU Ren-Chang; ZHAO Xuan

Chinese Physics C> 1983, Vol. 7> Issue(2) : 236-244

QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING

HOU Ren-Chang ^, ,
ZHAO Xuan

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The quadrupole-octupole two-phonon excitations in inelastic scattering (α, α′) at energies of 31 and 43 MeV are studied with DWBA method. Both nuclear potential and Coulomb potential are considerd. The zeroth-order nuclear potential is taken tobe Woods-Saxon potential. The non-spherical symmetric part V₁ of the nuclear potential induced by the vibration of the target nucleus is considered as a perturbation. In this calculation we onlykeep second-order term of the collective variable α_λν of nuclear surface for V₁ and first-order of V₁ for the total initial wave function Ψ⁽⁺⁾_i In distorted wave Green function, the absorptive channels as intermediate states are neglected. Furthermore, in the two-phonon excitation mechanism, it is assumed that the contribution of direct two-phonon excitation is important and the contribution of multiple two-phonon excitation is of less importance. The agreement between the theoretical and experimental angular distributions is reasonably well. It follows from this agreement that the 3.72 and 4.19 MeV levels in ⁶⁴Zn may be quadrupole-octupole two-phonon exciation levels abd the J^π of these levels may be 3^－ and 5^－ respectively.

References

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HOU Ren-Chang and ZHAO Xuan. QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING[J]. Chinese Physics C, 1983, 7(2): 236-244.

HOU Ren-Chang and ZHAO Xuan. QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING[J]. Chinese Physics C, 1983, 7(2): 236-244. shu

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Received: 1900-01-01
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING

Corresponding author: HOU Ren-Chang,

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1983-04-05

Abstract: The quadrupole-octupole two-phonon excitations in inelastic scattering (α, α′) at energies of 31 and 43 MeV are studied with DWBA method. Both nuclear potential and Coulomb potential are considerd. The zeroth-order nuclear potential is taken tobe Woods-Saxon potential. The non-spherical symmetric part V₁ of the nuclear potential induced by the vibration of the target nucleus is considered as a perturbation. In this calculation we onlykeep second-order term of the collective variable α_λν of nuclear surface for V₁ and first-order of V₁ for the total initial wave function Ψ⁽⁺⁾_i In distorted wave Green function, the absorptive channels as intermediate states are neglected. Furthermore, in the two-phonon excitation mechanism, it is assumed that the contribution of direct two-phonon excitation is important and the contribution of multiple two-phonon excitation is of less importance. The agreement between the theoretical and experimental angular distributions is reasonably well. It follows from this agreement that the 3.72 and 4.19 MeV levels in ⁶⁴Zn may be quadrupole-octupole two-phonon exciation levels abd the J^π of these levels may be 3^－ and 5^－ respectively.

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QUADRUPOLE-OCTUPOLE TWO-PHONON EXCITATIONS IN INELASTIC SCATTERING

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