Vanishing spin alignment : experimental indication of triaxial $\bf ^{28}Si + {^{28}Si}$ nuclear molecule

Details Vanishing spin alignment : experimental indication of triaxial $\bf ^{28}Si + {^{28}Si}$ nuclear molecule Vanishing spin alignment : experimental indication of triaxial $\bf ^{28}Si + {^{28}Si}$ nuclear molecule

1999-09-15

arxiv.org/abs/nucl-ex/9909009v1

Phys.Rev. C60 (1999) 041303

Physics

Nuclear Physics

Nuclear Experiment

14 pages standard REVTeX file, 3 ps Figures -- Accepted for publication in Physical Review C (Rapid Communication)

Scientific paper

10.1103/PhysRevC.60.041303

Fragment-fragment-$\gamma$ coincidences have been measured for $\rm ^{28}Si + {^{28}Si}$ at an energy corresponding to the population of a conjectured resonance in $^{56}$Ni. Fragment angular distributions as well as $\gamma$-ray angular correlations indicate that the spin orientations of the outgoing fragments are perpendicular to the orbital angular momentum. This differs from the $\rm ^{24}Mg+{^{24}Mg}$ and the $\rm ^{12}C+{^{12}C}$ resonances, and suggests two oblate $\rm ^{28}Si$ nuclei interacting in an equator-to-equator molecular configuration.

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