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SUMMARY:Pushing the boundaries at FRIB: High-Precision Mass Measurements N
 ear The Driplines
DTSTART:20260311T101500Z
DTEND:20260311T110000Z
DTSTAMP:20260418T013000Z
UID:indico-event-39011@indico.in2p3.fr
DESCRIPTION:Speakers: Franziska MAIER (FRIB/MSU)\n\nWith new radioactive-i
 on-beam facilities such as the Facility for Rare Isotope Beams (FRIB) beco
 ming operational\, the properties of nuclei in close proximity to the drip
 lines are coming within reach of high-precision measurements. Within the l
 ast two years\, at a fraction of FRIB’s ultimate beam intensity\, we use
 d the LEBIT facility [1] to successfully perform Penning-trap mass measure
 ments of 23Si [2]\, 101Sn [3]\, 103Sn [4]\, and 22Al [5]. These masses are
  critical for nuclear astrophysics and nuclear structure studies. They pro
 vide insights into the smoothness of the mass surface\, help assess isospi
 n symmetry breaking and offer valuable anchor points for nuclear models 
 – especially for predicting properties near the driplines\, where experi
 mental data remain scarce. As FRIB ramps up its beam intensity\, the produ
 ction of many more nuclei will enable new and exceptional research opportu
 nities. However\, the short half-lives of many of these nuclei pose challe
 nges for Penning-trap mass spectrometry. To overcome these\, we are develo
 ping MR-ToF devices at FRIB significantly expanding FRIB’s mass measurem
 ent and mass separation capabilities [6\,7].\nIn this contribution\, I wil
 l discuss the mass measurements of 101\,103Sn\, and 23Si and highlight the
 ir significance for nuclear structure and nuclear astrophysics. Additional
 ly\, an overview of the ongoing development of FRIB’s MR-ToF devices wil
 l be provided\, that will unlock new experimental possibilities at FRIB.\n
 [1] R. Ringle\, S. Schwarz and G. Bollen\, Penning trap mass spectrometry 
 of rare isotopes produced via projectile fragmentation at the LEBIT facili
 ty\, IJMS 87\, 349-350\, 2013. \n[2] F.M. Maier et al.\, Exploring Isospin
  Symmetry Breaking in Exotic Nuclei: High-Precision Mass Measurement of 23
 Si and Shell-Model Calculations of T = 5/2 Isotopes\, PRC 112\, 014329\, 2
 025.\n[3] C.M. Ireland et al.\, The mass of 101Sn and Bayesian extrapolati
 ons to the proton dripline. Accepted in PRC. https://www.arxiv.org/abs/251
 0.11815 \n[4] C.M. Ireland\, F.M. Maier et al.\, High-Precision mass measu
 rements of 103Sn restores smoothness of the mass surface\, PRC 111\, 01431
 4 (2025). \n[5] S.E. Campbell et al.\, Precision Mass Measurement of the P
 roton Dripline Halo Candidate 22Al\, PRL 131\, 152501 (2024).\n[6] F.M. Ma
 ier\, C.M. Ireland et al.\, A high-voltage MR-ToF mass spectrometer and se
 parator for the study of exotic ions at FRIB. NIMA 1084\, 171220\, 2026.\n
 [7] C. M. Ireland\, F.M. Maier et al.\, Enhancing the mass resolving power
  in FRIB’s proposed MR-ToF mass separator and spectrometer: Addressing n
 on-ideal conditions. Submitted. https://arxiv.org/abs/2510.11741 \n\nhttps
 ://indico.in2p3.fr/event/39011/
LOCATION:LP2IB
URL:https://indico.in2p3.fr/event/39011/
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