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• W2092115875 endingPage "1776" @default.
• W2092115875 startingPage "1754" @default.
• W2092115875 abstract "Inelastic scattering exciting the ${2}^{+}$ and ${4}^{+}$ members of the ${K}^{ensuremath{pi}}$${=2}^{+}$ ensuremath{gamma}-vibrational band in $^{152}$,154Sm, $^{160}mathrm{Gd}$, $^{164}mathrm{Dy}$, $^{166}$,168Er, $^{176}mathrm{Yb}$, $^{182}$,184W, and $^{192}mathrm{Os}$ has been measured with 65-MeV polarized protons. Coupled-channel analyses have been performed assuming the ensuremath{gamma}-vibrational model or the asymmetric rotor model. A large hexadecapole (${Y}_{42}$) term in the ensuremath{gamma} motion is necessary in both models in order to reproduce the experimental data. The quadrupole (${Y}_{22}$) and hexadecapole (${Y}_{42}$) transition strengths to the ensuremath{gamma}-vibrational band have been extracted systematically from the optical potential parameters and the deformation parameters for the first time. These show a strong mass number dependence, and can be understood qualitatively by a simple geometrical picture together with the quadrupole (${Y}_{20}$) and hexadecapole (${Y}_{40}$) moments. The experimental ${Y}_{22}$ and ${Y}_{42}$ strengths have been compared with a random-phase-approximation calculation. This suggests the importance of the hexadecapole degree of freedom in the ensuremath{gamma} vibration. A density-dependent Hartree-Fock calculation explains the quadrupole (${Y}_{20}$) moments and the trend of the hexadecapole (${Y}_{40}$) moments of the deformed optical potentials very well. The effect of the density dependence of the effective interaction is also discussed through the ${Y}_{20}$ moments and ${Y}_{22}$ strengths." @default.
• W2092115875 created "2016-06-24" @default.
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• W2092115875 date "1987-11-01" @default.
• W2092115875 modified "2023-10-17" @default.
• W2092115875 title "Inelastic proton scattering exciting the<i>γ</i>-vibrational band in deformed nuclei (152<i>≤A≤</i>192) at 65 MeV and the systematics of the hexadecapole (<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi>Y</mml:mi></mml:mrow><mml:mrow><mml:mn>42</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>) strength of the<i>γ</i>vibration" @default.
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• W2092115875 doi "https://doi.org/10.1103/physrevc.36.1754" @default.
• W2092115875 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9954281" @default.
• W2092115875 hasPublicationYear "1987" @default.
• W2092115875 type Work @default.

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