The 48Ca(3He, t)48Sc reaction at 66 and 70 MeV: Reaction mechanism and Gamow-Teller strength

doi:10.1016/0375-9474(80)90067-6

Nuclear Physics A

Volume 334, Issue 2, 4 February 1980, Pages 248-268

https://doi.org/10.1016/0375-9474(80)90067-6 Get rights and content

Abstract

The ⁴⁸Ca(³He, t)⁴⁸Sc reaction has been studied at E_{3_He} = 66 MeV and 70 MeV. Angular distributions are given from θ = 8° to 35°. The 0⁺–7⁺ multiplet in ⁴⁸Sc is strongly excited at these energies and the spectra are further characterized by some broad structures on a continuous background. Broad peaks at E_ex = 7.8, 10.6 and 13.3 MeV have an angular distribution similar to the low-lying 1⁺ state. The broad peaks are interpreted as envelopes of groups of 1⁺ states carrying a significant part of the Gamow-Teller strength. The strength distribution is consistent with a shell-model calculation. The reaction mechanism has been examined at 66 MeV. The cross section is calculated for the 0⁺–7⁺ multiplet in ⁴⁸Sc as a coherent sum of one-step and two-step processes. The two-step contribution is calculated in a full finite-range 2nd-order DWBA. The result is similar contributions from (³He, α, t) and (³He, d, t). The calculations account reasonably well for the data with the exception of the transition to 0⁺, IAS.

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^†: Work supported in part by funds from SNF (the Danish Natural Science Research Council).

^††: Work performed as part of the research programme of the “Stitching voor Fundamenteel Onderzoek der Materie” (FOM), with financial support from the “Netherlandse Organisatie voor Zuiver Wetenschappelijk Onderzoek”.

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The 48Ca(3He, t)48Sc reaction at 66 and 70 MeV: Reaction mechanism and Gamow-Teller strength

Abstract

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The ⁴⁸Ca(³He, t)⁴⁸Sc reaction at 66 and 70 MeV: Reaction mechanism and Gamow-Teller strength