NONSTATISTICAL STRUCTURES IN C-12(N-14,HE-4)NA-22 REACTION

The data on the θlab=7° excitation functions of12C(14N,4He)22Na reaction between E c.m.=10.15 and 15.88 MeV for 20 states of22Na up to an excitation energy of 5.800 MeV have been subjected to a statistical analysis consisting of the calculations of the distributions of fluctuating cross-sections, energy-dependent correlation function, deviation function, summed excitation function, and the coherence widths. The number of effective channels was calculated exactly. The analysis shows that, in addition to the statistical fluctuations, there are nonstatistical structures at 10.5, 11.62, 13.02, 13.3, 13.6 and 14.86 MeV. © 1990 Società Italiana di Fisica.