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Investigation of αγ angular correlations in the reaction 15N(p, αγ)12C induced by 7.5-MeV protons

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Abstract

The double-differential cross sections for the reaction 15N(p, αγ)12C induced by 7.5-MeV protons are measured for alpha-particle emission angles from 20° to 160°. All even spin-tensor components of the density matrix for the 2+ state (4.44 MeV) of the final nucleus are reconstructed by a model-independent method. For the same state of the carbon nucleus, the populations of magnetic sublevels and the components of the angular-momentum-orientation tensor are analyzed as functions of the alpha-particle emission angle. Our experimental data are compared with theoretical predictions based on the triton-cluster-pickup mechanism treated within the coupled-channel method. It is shown that correlation features are sensitive to the reaction mechanism and to structural characteristics of the nuclei involved. The role of sequential processes is emphasized.

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Translated from Yadernaya Fizika, Vol. 63, No. 9, 2000, pp. 1573–1579.

Original Russian Text Copyright © 2000 by Ignatenko, Lebedev, Orlova, Spassky.

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Ignatenko, A.V., Lebedev, V.M., Orlova, N.V. et al. Investigation of αγ angular correlations in the reaction 15N(p, αγ)12C induced by 7.5-MeV protons. Phys. Atom. Nuclei 63, 1489–1496 (2000). https://doi.org/10.1134/1.1312881

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  • DOI: https://doi.org/10.1134/1.1312881

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