title: First measurement of the giant monopole and quadrupole resonances in a short-lived nucleus: 56Ni.
abstract: The isoscalar giant monopole resonance (GMR) and giant quadrupole resonance (GQR) have been measured in the 56Ni unstable nucleus by inducing the 56Ni(d,d') reaction at 50A MeV in the Maya active target at the GANIL facility. The GMR and GQR centroids are measured at 19.3+/-0.5 MeV and 16.2+/-0.5 MeV, respectively. The corresponding angular distributions are extracted from 3 degrees to 7 degrees . A multipole decomposition analysis using distorted wave Born approximation with random phase approximation transition densities shows that both the GMR and the GQR exhaust a large fraction of the energy-weighted sum rule. The demonstration of this new method opens a broad range of giant resonance studies at intermediate-energy radioactive beam facilities.
authors: Institut de Physique Nucléaire IN2P3/CNRS, Université Paris Sud, 91406 Orsay Cedex, France.
authors: C
authors: C
authors: Monrozeau
authors: E
authors: E
authors: Khan
authors: Y
authors: Y
authors: Blumenfeld
authors: C E
authors: CE
authors: Demonchy
authors: W
authors: W
authors: Mittig
authors: P
authors: P
authors: Roussel-Chomaz
authors: D
authors: D
authors: Beaumel
authors: M
authors: M
authors: Caamaño
authors: D
authors: D
authors: Cortina-Gil
authors: J P
authors: JP
authors: Ebran
authors: N
authors: N
authors: Frascaria
authors: U
authors: U
authors: Garg
authors: M
authors: M
authors: Gelin
authors: A
authors: A
authors: Gillibert
authors: D
authors: D
authors: Gupta
authors: N
authors: N
authors: Keeley
authors: F
authors: F
authors: Maréchal
authors: A
authors: A
authors: Obertelli
authors: J-A
authors: JA
authors: Scarpaci