Abstract
We have employed the line shape analysis technique to study nuclear spin alignment produced in the $^{12}\mathrm{C}$ + $^{16}\mathrm{O}$ reaction populating the ${2}^{+}$ 4.43-MeV state in $^{12}\mathrm{C}$. We present excitation functions of $m$-substate population $P(m)$ measured in the range ${E}_{\mathrm{c}.\mathrm{m}.}=19\ensuremath{-}22.6$ MeV and detailed angular distributions of $P(m)$ obtained at ${E}_{\mathrm{c}.\mathrm{m}.}=21.7,21.9, \mathrm{and} 22.3$ MeV. Results have been analyzed in terms of a single resonance with sharp spin in the compound nucleus and found to contradict previous spin assignment based on studies of angular distributions of cross section in the ${E}_{\mathrm{c}.\mathrm{m}.}\ensuremath{\approx}22 \mathrm{to} 22.6$ MeV region.
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