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- W2782002188 abstract "We systematically measured the differential cross sections of inelastic $ensuremath{alpha}$ scattering off self-conjugate $A=4n$ nuclei at two incident energies ${E}_{ensuremath{alpha}}=130phantom{rule{0.28em}{0ex}}mathrm{MeV}$ and $386phantom{rule{0.28em}{0ex}}mathrm{MeV}$ at Research Center for Nuclear Physics, Osaka University. The measured cross sections were analyzed by the distorted-wave Born-approximation (DWBA) calculation using the single-folding potentials, which are obtained by folding macroscopic transition densities with the phenomenological $ensuremath{alpha}N$ interaction. The DWBA calculation with the density-dependent $ensuremath{alpha}N$ interaction systematically overestimates the cross sections for the $mathrm{ensuremath{Delta}}L=0$ transitions. However, the DWBA calculation using the density-independent $ensuremath{alpha}N$ interaction reasonably well describes all the transitions with $mathrm{ensuremath{Delta}}L=0$--4. We examined uncertainties in the present DWBA calculation stemming from the macroscopic transition densities, distorting potentials, phenomenological $ensuremath{alpha}N$ interaction, and coupled channel effects in $^{12}mathrm{C}$. It was found that the DWBA calculation is not sensitive to details of the transition densities nor the distorting potentials, and the phenomenological density-independent $ensuremath{alpha}N$ interaction gives reasonable results. The coupled-channel effects are negligibly small for the ${2}_{1}^{+}$ and ${3}_{1}^{ensuremath{-}}$ states in $^{12}mathrm{C}$, but not for the ${0}_{2}^{+}$ state. However, the DWBA calculation using the density-independent interaction at ${E}_{ensuremath{alpha}}=386phantom{rule{0.28em}{0ex}}mathrm{MeV}$ is still reasonable even for the ${0}_{2}^{+}$ state. We concluded that the macroscopic DWBA calculations using the density-independent interaction are reliably applicable to the analysis of inelastic $ensuremath{alpha}$ scattering at ${E}_{ensuremath{alpha}}ensuremath{sim}100phantom{rule{0.28em}{0ex}}mathrm{MeV}/mathrm{u}$." @default.
- W2782002188 created "2018-01-12" @default.
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- W2782002188 date "2018-01-03" @default.
- W2782002188 modified "2023-10-17" @default.
- W2782002188 title "Systematic analysis of inelastic <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>α</mml:mi></mml:math> scattering off self-conjugate <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>A</mml:mi><mml:mo>=</mml:mo><mml:mn>4</mml:mn><mml:mi>n</mml:mi></mml:mrow></mml:math> nuclei" @default.
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- W2782002188 doi "https://doi.org/10.1103/physrevc.97.014601" @default.
- W2782002188 hasPublicationYear "2018" @default.
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