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Evidence for alpha-particle chain configurations in Mg 24

1992; American Physical Society; Volume: 68; Issue: 9 Linguagem: Inglês

10.1103/physrevlett.68.1295

1092-0145

A. H. Wuosmaa, R. R. Betts, B. B. Back, M. Freer, B. G. Glagola, T. Happ, Deborah J. Henderson, P. Wilt, I. G. Bearden,

Fullerene Chemistry and Applications

We have observed a strong peak in the excitation function for the inelastic scattering reaction $^{12}\mathrm{C}$${(}^{12}$C${,}^{12}$C(${0}_{2}^{+}$)${)}^{12}$C(${0}_{2}^{+}$) at an energy of ${\mathit{E}}_{\mathrm{c}.\mathrm{m}.}$=32.5 MeV. A recoil coincidence arrangement between two double-sided silicon strip detectors was used to detect the \ensuremath{\alpha} particles from the decaying $^{12}\mathrm{C}$ nuclei, and the reconstructed reaction kinematics were used to calculate the two-body scattering Q value. This excitation-function structure may be interpreted as arising from very highly deformed \ensuremath{\alpha}-particle chain configurations in the nucleus $^{24}\mathrm{Mg}$.