Alpha clustering in ${}^{28}$Si probed through the identification of high-lying $0^{+}$ states

Abstract

Aspects of nuclear structure in alpha-conjugate nuclei have long been associated with alpha clustering, including the existence of superdeformed bands. In this paper, an alpha-particle inelastic scattering experiment investigating the location of $0^{+}$ states in ${}^{28}$Si is reported in an attempt to locate possible cluster states. The results are compared to a semi-microscopic model which shows good agreement with the data, and supports the assignment of a newly discovered $0^{+}$ state as the band-head of a previously observed superdeformed band in ${}^{28}$Si

arXiv comment6 figures, 8 pages, updated to fix broken figure placement, updated again to fix a couple of typos; final update

References in corpus (6)

• $2\alpha +t$ cluster structure in ${}^{11}$B
• $\alpha$-cluster structure of ${}^{18}$O
• Cluster structures and superdeformation in ${}^{28}$Si
• Algebraic models for shell-like quarteting of nucleons
• Quartet excitations and cluster spectra in light nuclei
• Multichannel dynamical symmetry and cluster-coexistence

Cited by in corpus (8)

• Inversion doublets of reflection-asymmetric clustering in 28Si and their isoscalar monopole and dipole transitions
• Re-examining the ${}^{26}$Mg($\alpha ,{\alpha }^{\prime }$)${}^{26}$Mg reaction - probing astrophysically important states in ${}^{26}$Mg
• Isoscalar giant monopole resonance in ${}^{24}$Mg and ${}^{28}$Si: Effect of coupling between the isoscalar monopole and quadrupole strength
• Re-analysis of the ${}^{24}$Mg($\alpha ,\gamma$)${}^{28}$Si reaction rate at stellar temperatures
• Isoscalar monopole and dipole transitions in ${}^{24}$Mg, ${}^{26}$Mg and ${}^{28}$Si
• Gross features of the spectrum of the 36Ar nucleus
• Quadrupole properties of the eight $SU(3)$ algebras in $(sdgi)$ space
• Quartet structure of $N=Z$ nuclei in a boson formalism: the case of ${}^{28}$Si