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論文

Spectroscopy of $$^{46}$$Ar by the ($$t,p$$) two-neutron transfer reaction

Nowak, K.*; Wimmer, K.*; Hellgartner, S.*; M$"u$cher, D.*; Bildstein, V.*; Diriken, J.*; Elseviers, J.*; Gaffney, L. P.*; Gernh$"a$user, R.*; Iwanicki, J.*; et al.

Physical Review C, 93(4), p.044335_1 - 044335_10, 2016/04

 被引用回数:11 パーセンタイル:71(Physics, Nuclear)

The $$^{44}$$Ar($$t,p$$)$$^{46}$$Ar two-neutron transfer reaction at 2.16 MeV/u was studied at CERN using a $$^{44}$$Ar radioactive beam and a tritium loaded radioactive target. Angular distributions for three final states were measured and based on the shape of the differential cross section an excited state at 3695 keV was identified as the first excited 0$$+$$ state. The differential cross-sections for the 0$$^+$$-ground state, and first excited 2$$^+$$ and 0$$^+$$ states are compared to DWBA calculations including two-step reactions through the intermediate nucleus $$^{45}$$Ar. By comparison large scale shell model calculations using state-of-the-art effective interactions, with and without the tensor components of the interactions, it was observed that the cross-shell proton-neutron tensor interaction has measurable effects on the observables at low excitation energy in $$^{46}$$Ar.

論文

Cluster-transfer reactions with radioactive beams; A Spectroscopic tool for neutron-rich nuclei

Bottoni, S.*; Leoni, S.*; Fornal, B.*; Raabe, R.*; Rusek, K.*; Benzoni, G.*; Bracco, A.*; Crespi, F. C. L.*; Morales, A. I.*; Bednarczyk, P.*; et al.

Physical Review C, 92(2), p.024322_1 - 024322_8, 2015/08

 被引用回数:17 パーセンタイル:79.89(Physics, Nuclear)

An exploratory experiment was performed at REX-ISOLDE CERN to test the potential of cluster-transfer reactions at the Coulomb barrier as a mechanism to explore the structure of exotic neutron-rich nuclei. The transfer of triton and alpha particles in a reaction of a beam of $$^{98}$$Rb onto a $$^7$$Li target were studied through particle-$$gamma$$ coincidence measurements. The results indicate that such cluster transfer reactions can be an efficient method to investigate the structure of neutron-rich nuclei at medium-high excitation energies and spins.

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