The study of neutron-rich nuclei production in the region of the closed shell N=126 in the multi-nucleon transfer reaction Xe-136+Pb-208 (CROSBI ID 237462)
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Podaci o odgovornosti
Novikov, K. ; Harca, I.M. ; Kozulin, E.M. ; Dmitriev, S. ; Itkis, J. ; Knyazheva, G. ; Loktev, T. ; Corradi, L. ; Valiente-Dobon, J. ; Fioretto, E. ; Montanari, D. ; Stefanini, A.M. ; Vardaci, E. ; Quero, D. ; Montagnoli, G. ; Scarlassara, F. ; Strano, E. ; Pollarolo, G. ; Piot, J. ; Mijatović, Tea ; Szilner, Suzana ; Ackermann, D. ; Chubarian, G. ; Trzaska, W.H.
engleski
The study of neutron-rich nuclei production in the region of the closed shell N=126 in the multi-nucleon transfer reaction Xe-136+Pb-208
The unexplored area of heavy neutron rich nuclei is extremely important for nuclear astrophysics investigations and, in particular, for the understanding of the r-process of astrophysical nucleogenesis. For the production of heavy neutron rich nuclei located along the neutron closed shell N=126 (probably the last waiting point in the r-process of nucleosynthesis) the low-energy multi-nucleon transfer reaction Xe-136+Pb-208 at E-lab=870MeV was explored. Due to the stabilizing effect of the closed neutron shells in both nuclei, N=82 and N=126, and the rather favorable proton transfer from lead to xenon, the light fragments formed in this process are well bound and the Q-value of the reaction is nearly zero. Measurements were performed with the PRISMA spectrometer in coincidence with an additional time-of-flight (ToF) arm on the +20 beam line of the PIAVE-ALPI accelerator in Legnaro, Italy. The PRISMA spectrometer allows identification of the A, Z and velocity of the projectile-like fragments (PLF), while the second arm gives access to the target-like fragments (TLF). Details on the experimental setup and preliminary results are reported.
heavy neutron rich nuclei, PRISMA spectrometer
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Podaci o izdanju
703
2016.
012020-1-012020-6
objavljeno
1742-6588
10.1088/1742-6596/703/1/012020