Abstract
Abstract Heavy-ion radiative capture has been observed in the two reactions 9 Be( 12 C, γ) 21 Ne and 16 O( 7 Li, γ) 23 Na for c.m. energies between 3 and 9 MeV. High-energy γ-rays populating levels up to 4.7 MeV in the final nuclei were detected with a large volume, anticoincidence-shielded NaI spectrometer. Peak cross sections for individual transitions in both reactions were found near 60 nb/sr. For 9 Be + 12 C all excitation functions were rather smooth with a broad bump around E c.m = 5–6 MeV. Statistical model calculations were in good agreement with the data suggesting that perhaps as much as half of the GDR strength in 21 Ne is statistical. More structure was found in 16 O + 7 Li superimposed on still sizeable statistical yield. Previous measurements of the same reaction were found to be partially in error.
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