Exact finite-range DWBA analysis of multi-nucleon transfer reactions

Perrenoud, Jean-Luc; DeVries, R.M.

doi:10.1016/0370-2693(71)90308-x

Cited by 32 publications

(2 citation statements)

References 18 publications

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“…3. Independent validation of the approach: the 6 Li(p, γ) 7 Be reaction Because the one-step proton transfer is dominant at forward angles, the ANCs for the 6 Li + p → 7 Be channel was also derived, using a similar approach as sketched above by normalizing the forward hemisphere angular distributions computed in the post form of the modified DWBA [38] by means of the LOLA code [47]. As in [48], we focused on the first peak in the angular distribution, where the extraction of the ANC is most accurate since ANC can be deduced from peripheral transfer processes only.…”

Section: The Anc Experimentsmentioning

confidence: 99%

Determination of the astrophysical factor of the ³He(α,γ)⁷Be down to zero energy using the asymptotic normalization coefficient method

La Cognata,

Kiss,

Yarmukhamedov

et al. 2023

J. Phys.: Conf. Ser.

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The observation of neutrinos emitted in the p − p chain and in the CNO cycle can be employed to test the Standard Solar Model. The 3He(α,γ)7Be reaction is the first reaction of the 2nd and 3rd branch of the p − p chain, so the indetermination of its cross section significantly affects the predicted 7Be and 8B neutrino fluxes. Notwithstanding its relevance and the great deal of experimental and theoretical papers, information of the reaction cross section at energies of the core of the Sun (15 keV - 30 keV) is sparse and additional experimental work is necessary to attain the target (~ 3%) accuracy. The precise understanding of the external capture component to the 3He(α,γ)7Be reaction cross section is pivotal for the theoretical assessment of the reaction mechanism. In this work, the indirect measurement of this external capture component using the Asymptotic Normalization Coefficient (ANC) technique is discussed. To extract the ANC, the angular distributions of deuterons yielded in the 6Li(3He,d)7Be α-transfer reaction were detected with high precision at E3He =3.0 MeV and 5.0 MeV. The ANCs were then deduced from the juxtaposition of DWBA and CC calculations with the experimental angular distributions and the zero energy astrophysical S-factor for 3He(α,γ)7Be reaction was calculated to equal 0.534 ± 0.025 keVb. Both our experimental and theoretical approaches were tested through the analysis of the 6Li(p,γ)7Be astrophysical factor, with further interesting astrophysical implications.

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Section: The Anc Experimentsmentioning

confidence: 99%

Determination of the astrophysical factor of the ³He(α,γ)⁷Be down to zero energy using the asymptotic normalization coefficient method

La Cognata,

Kiss,

Yarmukhamedov

et al. 2023

J. Phys.: Conf. Ser.

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“…The zero-range program DWUCK of Kunz (P. D. Kunz, University of Colorado report, unpublished) is widely used. Of equal importance are the "exact" finite-range codes such as LOLA (Perrenoud & DeVries 1971, DeVries 1973a, which are free of the zero-range assumption. They are necessary for proper analysis of heavy-ion stripping and they offer good prospects for absolute cross-section calculations.…”

Section: Historymentioning

confidence: 99%

Alpha Transfer Reactions in Light Nuclei

Fulbright¹

1979

Annu. Rev. Nucl. Part. Sci.

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Transfer of neutron-proton pairs in heavy-ion interactions

1975

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Exact finite-range DWBA analysis of multi-nucleon transfer reactions

Cited by 32 publications

References 18 publications

Determination of the astrophysical factor of the ³He(α,γ)⁷Be down to zero energy using the asymptotic normalization coefficient method

Determination of the astrophysical factor of the ³He(α,γ)⁷Be down to zero energy using the asymptotic normalization coefficient method

Alpha Transfer Reactions in Light Nuclei

Transfer of neutron-proton pairs in heavy-ion interactions

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Exact finite-range DWBA analysis of multi-nucleon transfer reactions

Cited by 32 publications

References 18 publications

Determination of the astrophysical factor of the 3He(α,γ)7Be down to zero energy using the asymptotic normalization coefficient method

Determination of the astrophysical factor of the 3He(α,γ)7Be down to zero energy using the asymptotic normalization coefficient method

Alpha Transfer Reactions in Light Nuclei

Transfer of neutron-proton pairs in heavy-ion interactions

Contact Info

Product

Resources

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Determination of the astrophysical factor of the ³He(α,γ)⁷Be down to zero energy using the asymptotic normalization coefficient method

Determination of the astrophysical factor of the ³He(α,γ)⁷Be down to zero energy using the asymptotic normalization coefficient method