Details

Autor(en) / Beteiligte

• de Grancey, F.
• Mercenne, A.
• de Oliveira Santos, Francois
• Davinson, T.
• Sorlin, O.
• Angélique, J.C.
• Assié, M.
• Berthoumieux, E.
• Borcea, R.
• Buta, A.
• Celikovic, I.
• Chudoba, V.
• Daugas, J.M.
• Dumitru, G.
• Fadil, M.
• Grévy, S.
• Kiener, J.
• Lefebvre-Schuhl, A.
• Michel, N.
• Mrazek, J.
• Negoita, F.
• Okolowicz, J.
• Pantelica, D.
• Pellegriti, M.G.
• Perrot, L.
• Ploszajczak, M.
• Randisi, G.
• Ray, I.
• Roig, O.
• Rotaru, F.
• Saint-Laurent, M.G.
• Smirnova, N.
• Stanoiu, M.
• Stefan, I.
• Stodel, C.
• Subotic, K.
• Tatischeff, V.
• Thomas, J.C.
• Ujic, P.
• Wolski, R.

Titel

An above-barrier narrow resonance in $^{15}$F

Ist Teil von

• Physics letters. B, 2016-07, Vol.758, p.26-31

Ort / Verlag

Elsevier

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Intense and purified radioactive beam of post-accelerated $^{14}$O was used to study the low-lying states in the unbound $^{15}$F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a resonance at E$_R$=4.757(6)(10)~MeV with a width of $\Gamma$=36(5)(14)~keV was measured for the first time with high precision. The structure of this narrow above-barrier state in a nucleus located two neutrons beyond the proton drip line was investigated using the Gamow Shell Model in the coupled channel representation with a $^{12}$C core and three valence protons. It is found that it is an almost pure wave function of two quasi-bound protons in the $2s_{1/2}$ shell.