Elsevier

Nuclear Physics A

Volume 124, Issue 2, 10 February 1969, Pages 350-362
Nuclear Physics A

Désexcitation similaire de deux niveaux voisins formés dans la réaction 28Si(α, γ)32S

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Abstract

The 10.23 and 10.29 MeV 32S levels were observed through the reaction 28Si(α, γ)32S (Eα = 3.753 and 3.820 MeV). The decay scheme has been studied using NaI(Tl) and Ge(Li) detectors. Angular correlation measurements determine the spin of the 4.465 MeV level as J = 4. Branching ratios and multiple mixing ratios are given. The 10.23 and 10.29 MeV levels of 32S might be a split isobaric analogue state, since both levels have the same spin (Jπ = 3), and very similar branching ratios with strong branches to the relatively highly excited state with Jπ = 3 at 5.012 MeV. Moreover, the 3 → 3 transitions are strong (≧ 0.3 W.u. and ≧ 0.1 W.u.) and have pure M1 character. The parent state might be the 3.324 MeV level of 32P.

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