20.500.12556/DiRROS-32156 Production of isotopes near the heavy-element nucleosynthesis path at FRS Neutron-rich isotopes far from stability were produced and observed at the projectile Fragment Separator (FRS) of the GSI Helmholtzzentrum für Schwerionenforschung in the FAIR Phase-0 experimental program. The isotopes were produced in April 2020 in the fragmentation of a 1.05 GeV/nucleon 208Pb beam on a beryllium target. The experiment targeted the neutron-rich region near the � = 126 shell closure, a key area for understanding the astrophysical r-process, but largely unexplored due to the experimental challenges in producing such exotic nuclei. Within this work, we identified five isotopes which were not seen previously at FRS; 184Tm, 195Ta, 198W, 200Re, and 201Re — the latter located directly on the � = 126 line. These observations corroborate the extension of the nuclear chart and highlight the capabilities of the FRS and of in-flight fragmentation at relativistic energies in accessing this region. r-process fragmentation reactions nucleosynthesis nukleosinteza fragmentacijske reakcije true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2026 The Author(s). Neznano 2026-08-28 11:49:55 2026-08-28 11:49:55 2026-08-29 04:22:38 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Opis vira z dne 4. 8. 2026; Soavtorja iz Slovenije: Matjaž Vencelj, Jelena Vesić; str. 1-6 Vol. 880, article no. 140729 Sep. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2026-03-13 2026-07-06 2026-07-09 539.1 1873-2445 10.1016/j.physletb.2026.140729 286828547 https://www.sciencedirect.com/science/article/pii/S0370269326005800 1 df9a6225-a2c5-11f1-b645-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=50153 RAZ_Pietri_Stephane_2026.pdf RAZ_Pietri_Stephane_2026.pdf 1 7566B948EBC3B4D79D0C8C968B80F42E 30c7a2638c83ae8c65fd6d1cf22e21f332d88aaff1a1b13cf56eafe0a10a147d 81741e99-a2c6-11f1-b645-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=50154 Institut Jožef Stefan 0 0 0