16O, 24, 26Mg, 28Si, 32S, 40Ca(α, 12C) and multi-α-cluster transfer reactions

Coupled-reaction-channel study of the C12(α,Be8) reaction and the Cuong1, Descouvemont2, Khoa3 et al. 2020Phys. Rev. C3000View full textAdd to dashboardCite

“…≈ 0.36 and S α (2 + ) ≈ 0.38, which are rather close to the spectroscopic factors predicted recently by other cluster models [44,45]. Note that the S α values used in our CRC calculation are also close to those extracted from the DWBA analysis of the 8 Be transfer reaction 24 Mg(α, 12 C) 16 O [46]. The same 8 Be+ 8 Be OP has been used for both 8 Be+ 8 Be g.s.…”

Coupled reaction channels study of the ¹⁶O(d,⁶Li) reaction

“…The established α cluster structure of the excited states of 12 C at the energies near the α decay threshold are of interest for both the nuclear physics and astrophysics. For example, the isoscalar 0 + 2 excitation of 12 C at 7.65 MeV, known as the Hoyle state, plays a vital role in the stellar carbon synthesis.…”

“…Several measurements have been performed to determine the α spectroscopic factor of 16 Og.s. [11][12][13][14][15][16][17][18][19][20], but the deduced S values are ranging widely from about 0.3 to 1.0, depending on the reaction mechanism and analysis method [11][12][13][14][16][17][18][19]. Thus, the α spectroscopic factors of 16 O still remain the research topic of different nuclear structure and reaction studies.…”

“…Among various experiments, the α transfer reactions like (d, 6 Li), (t, 7 Li), ( 3 He, 7 Be), and (α, 8 Be) [11][12][13][14][15]20] were proven to be very helpful for the determination of the α spectroscopic factors. The most important inputs for the analysis of a transfer reaction in either the distorted wave Born approximation (DWBA) or the CRC formalism are the α spectroscopic factor S and the optical potentials (OP) for both the entrance and exit channels of the reaction.…”

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The α transfer 16 O(d, 6 Li) 12 C reaction has been studied within the coupled reaction channels (CRC) approach, inluding both the direct and indirect α transfer processes. The obtained results show an important contribution of the indirect α transfer via the 2 + and 4 + states of 12 C. The CRC results show that the best-fit α spectroscopic factors of 16 O becomes smaller when the indirect transfer processes are taken into account.

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