New determination of proton spectroscopic factors and reduced widths forBe8states in the 16.5–18.0 MeV excitation energy region via the study of theLi7(He3,d)Be8transfer reaction atElab=20MeV: Implication for theLi7(p,α)He4hydrogen burning reaction

Autor: H. Beaumevieille, A. Bouchemha, S. Ouichaoui, S. Fortier, L. Rosier, J. Kiener, J. M. Maison, J. Vernotte, A. Belhout, J. P. Thibaud, J. Rotbard, V. Tatischeff, A. Lefebvre-Schuhl, G. Bogaert

Publikováno v: Physical Review C. 96

The angular distributions of $^{8}\mathrm{Be}$ states in the excitation energy region ${E}_{x}\ensuremath{\sim}(16.5\text{--}18.2)$ MeV produced in the $^{7}\mathrm{Li}(^{3}\mathrm{He},d)^{8}\mathrm{Be}$ proton transfer reaction have been measured at

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e92493cd246e45329299e2aedca8724a
https://doi.org/10.1103/physrevc.96.054601

Branching ratios and screening effect in the d + d nuclear interaction

Autor: H. Beaumevieille, A. Boughrara, S. Ouichaoui

Publikováno v: EPL-Europhysics Letters
EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 1999, 48, pp.264-268

Using the WKB approximation for the evaluation of penetrabilities at stellar energies, the D(d, p)T and D(d,n)3He total cross-sections are analysed in the energy range 0–100 keV (c.m.). The s and p wave contributions are extracted in each of these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08f1a18d8c017e71b8090d2a6ba4bfe9
https://doi.org/10.1209/epl/i1999-00475-5

Screening effect in the 6Li(p, 3He) 4He and 7Li(p, α) 4He fusion reactions for solid targets

Autor: A.C. Chami, Y. Boudouma, H. Beaumevieille

Publikováno v: Nuclear Physics A. 617:57-73

The electronic screening effect on the penetrability of the Coulomb barrier is evaluated for 6Li(p, 3He)4He and 7Li(p, α)4He fusion reactions through the so-called enhancement factor ƒ. The ƒ s experimental values of ƒ for the two reactions invol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ba84d1ea78ead4c61df51ecc57bad90
https://doi.org/10.1016/s0375-9474(97)00396-5

Measurement and DWBA analysis of the $^{12}C(^6Li, d)^{16}O \alpha$-transfer reaction cross sections at 48.2 MeV. R-matrix analysis of $^{12}C(\alpha,\gamma)^{16}$O direct capture reaction data

Autor: A. Boughrara, S.K. Mehdi, J. P. Thibaud, A. Trabelsi, J. Vernotte, J. Kiener, H. Beaumevieille, J.M. Maison, S. Ouichaoui, L. H. Rosier, S. Fortier, A. Belhout

Publikováno v: Nuclear Physics A
Nuclear Physics A, Elsevier, 2007, 793, pp.178-211. ⟨10.1016/j.nuclphysa.2007.06.008⟩

The angular distributions for low lying states of 16O produced in the 12C(6Li, d)16O α-transfer reaction at E Li 6 ( lab ) = 48.2 MeV have been measured using a high energy resolution position sensitive detection system. The measured cross section d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f76ab2d86ee322a631217e182d217b5
http://hal.in2p3.fr/in2p3-00171058

Interpretation physique du facteur astrophysique S(E) aux energies stellaires a partir de la methode WKB

Autor: Ung Chan Tsan, Youcef Boudouma, Abdelhamid Bouchemha, Amina Boughrara, S. Ouichaoui, H. Beaumevieille

Publikováno v: Comptes Rendus de l'Academie des Sciences Serie II
Comptes Rendus de l'Academie des Sciences Serie II, Gauthier-Villars, 1999, 327, pp.251-258

Resume Nous proposons, pour les reactions « non resonnantes , une interpretation physique simple du facteur astrophysique S(E) en termes de facteur de penetration et d'un terme purement nucleaire. En utilisant l'approximation WKB (Wentzel, Kramers,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eef9dab29192cb05d7f1f2d260b55df5
http://hal.in2p3.fr/in2p3-00000716