Observation of isoscalar multipole strengths in exotic doubly-magic 56 Ni in inelastic α scattering in inverse kinematics

Bagchi, S.Gibelin, J.Harakeh, M.N.Kalantar-Nayestanaki, N.Achouri, N.L.Akimune, H.Bastin, B.Boretzky, K.Bouzomita, H.Caamaño Fresco, ManuelCàceres, L.Damoy, S.Delaunay, F.Fernández Domínguez, BeatrizFujiwara, M.Garg, U.Grinyer, G.F.Kamalou, O.Khan, E.Krasznahorkay, A.Lhoutellier, G.Libin, J.F.Lukyanov, S.Mazurek, K.Najafi, M.A.Pancin, J.Penionzhkevich, Y.Perrot, L.Raabe, R.Rigollet, C.Roger, T.Sambi, S.Savajols, H.Senoville, M.Stodel, C.Suen, L.Thomas, J.C.Vandebrouck, M.Van de Walle, J.2020-04-142020-04-142015Bagchi, S., Gibelin, J., Harakeh, M., Kalantar-Nayestanaki, N., Achouri, N., Akimune, H., Bastin, B., Boretzky, K., Bouzomita, H., Caamaño, M., Càceres, L., Damoy, S., Delaunay, F., Fernández-Domínguez, B., Fujiwara, M., Garg, U., Grinyer, G., Kamalou, O., Khan, E., Krasznahorkay, A., Lhoutellier, G., Libin, J., Lukyanov, S., Mazurek, K., Najafi, M., Pancin, J., Penionzhkevich, Y., Perrot, L., Raabe, R., Rigollet, C., Roger, T., Sambi, S., Savajols, H., Senoville, M., Stodel, C., Suen, L., Thomas, J., Vandebrouck, M. and Van de Walle, J., 2015. Observation of isoscalar multipole strengths in exotic doubly-magic 56 Ni in inelastic α scattering in inverse kinematics. Physics Letters B, 751, 371-3750370-2693http://hdl.handle.net/10347/21373The Isoscalar Giant Monopole Resonance (ISGMR) and the Isoscalar Giant Dipole Resonance (ISGDR) compression modes have been studied in the doubly-magic unstable nucleus 56Ni. They were measured by inelastic α-particle scattering in inverse kinematics at 50MeV/u with the MAYA active target at the GANIL facility. The centroid of the ISGMR has been obtained at Ex=19.1 ±0.5MeV. Evidence for the low-lying part of the ISGDR has been found at Ex=17.4 ±0.7MeV. The strength distribution for the dipole mode shows similarity with the prediction from the Hartree–Fock (HF) based random-phase approximation (RPA)[1]. These measurements confirm inelastic α-particle scattering as a suitable probe for exciting the ISGMR and the ISGDR modes in radioactive isotopes in inverse kinematicseng©2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)https://creativecommons.org/licenses/by/4.0/Observation of isoscalar multipole strengths in exotic doubly-magic 56 Ni in inelastic α scattering in inverse kinematicsjournal article10.1016/j.physletb.2015.10.0601873-2445open access