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

S. Bagchi*, J. Gibelin, M. N. Harakeh, N. Kalantar-Nayestanaki, N. L. Achouri, H. Akimune, B. Bastin, K. Boretzky, H. Bouzomita, M. Caamano, L. Caceres, S. Damoy, F. Delaunay, B. Fernandez-Dominguez, M. Fujiwara, U. Garg, G. F. Grinyer, O. Kamalou, E. Khan, A. KrasznahorkayG. Lhoutellier, J. F. Libin, S. Lukyanov, K. Mazurek, M. A. Najafi, J. Pancin, Y. Penionzhkevich, L. Perrot, R. Raabe, C. Rigollet, T. Roger, S. Sambi, H. Savajols, M. Senoville, C. Stodel, L. Suen, J. C. Thomas, M. Vandebrouck, J. Van de Walle

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

11 Citaten (Scopus)
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Samenvatting

The Isoscalar Giant Monopole Resonance (ISGMR) and the Isoscalar Giant Dipole Resonance (ISGDR) compression modes have been studied in the doubly-magic unstable nucleus Ni-56. They were measured by inelastic alpha-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 E-x= 19.1 +/- 0.5 MeV. Evidence for the low-lying part of the ISGDR has been found at E-x = 17.4 +/- 0.7 MeV. 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 a-particle scattering as a suitable probe for exciting the ISGMR and the ISGDR modes in radioactive isotopes in inverse kinematics. (C) 2015 The Authors. Published by Elsevier B.V.

Originele taal-2English
Pagina's (van-tot)371-375
Aantal pagina's5
TijdschriftPhysics Letters B
Volume751
DOI's
StatusPublished - 17-dec-2015

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