Naslov
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

Autori
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.

Izvornik
Journal of physics. Conference series (1742-6588) 703 (2016); 012020-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi
heavy neutron rich nuclei, PRISMA spectrometer

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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