Measurement of the Isoscalar Monopole Response in the Neutron-Rich Nucleus $^{68}$Ni using the active target MAYA - Archive ouverte HAL Access content directly
Conference Papers Year : 2015

Measurement of the Isoscalar Monopole Response in the Neutron-Rich Nucleus $^{68}$Ni using the active target MAYA

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J. Gibelin
N.L. Achouri
H. Baba
  • Function : Author
M. Caamano
  • Function : Author
L. Caceres
  • Function : Author
G. Colo
  • Function : Author
B. Fernandez-Dominguez
  • Function : Author
U. Garg
  • Function : Author
N. Keeley
  • Function : Author
W. Mittig
  • Function : Author
R. Raabe
  • Function : Author
T. Roger
H. Savajols
C. Stodel

Abstract

We report the measurement of the isoscalar monopole strength in the unstable nucleus $^{68}$Ni using inelastic alpha scattering at 50AMeV in inverse kinematics. This experiment has been performed at GANIL with LISE spectrometer using a dedicated detector: the active target MAYA. A part of the isoscalar giant monopole resonance (ISGMR) has been measured at 21:1 $\pm$ 1:9MeV and indications for a soft monopole mode are provided for the first time at 12:9 $\pm$ 1:0MeV. Distorted-wave born ap- proximation (DWBA) with random-phase approximation (RPA) transition densities have been used to study angular distribution and indicate that the L = 0 multipolarity dominates the cross-section for the ISGMR, and significantly contributes to the soft mode.

Dates and versions

in2p3-01196659 , version 1 (10-09-2015)

Identifiers

Cite

M. Vandebrouck, J. Gibelin, E. Khan, N.L. Achouri, H. Baba, et al.. Measurement of the Isoscalar Monopole Response in the Neutron-Rich Nucleus $^{68}$Ni using the active target MAYA. ARIS 2014 - Advances in Radioactive Isotope Science, Jun 2014, Tokyo, Japan. pp.020016, ⟨10.7566/JPSCP.6.020016⟩. ⟨in2p3-01196659⟩
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