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

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.
Type de document :
Communication dans un congrès
ARIS 2014 - Advances in Radioactive Isotope Science, Jun 2014, Tokyo, Japan. JPS Conference Proceedings, 6, pp.020016, 2015, 〈10.7566/JPSCP.6.020016〉
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http://hal.in2p3.fr/in2p3-01196659
Contributeur : Michel Lion <>
Soumis le : jeudi 10 septembre 2015 - 11:34:43
Dernière modification le : mardi 13 novembre 2018 - 16:58:10

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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. JPS Conference Proceedings, 6, pp.020016, 2015, 〈10.7566/JPSCP.6.020016〉. 〈in2p3-01196659〉

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