Observation of New Isotopes in the Fragmentation of Pt198 at FRIB

Tarasov, Oleg  B.; Gade, Alexandra; Fukushima, Kei; Hausmann, M.; Kwan, E.; Portillo, M.; Smith, M.; Ahn, D.  S.; Bazin, Daniel; Chyzh, R.; Giraud, Simon; Haak, Kenneth; Kubo, T.; Morrissey, David  J.; Ostroumov, P.  N.; Richardson, Isaiah; Sherrill, B.  M.; Stolz, A.; Watters, Shane; Weisshaar, Dirk; Zhang, Tong

doi:10.1103/physrevlett.132.072501

Observation of New Isotopes in the Fragmentation of Pt 198 at FRIB

Journal Article · Wed Feb 14 23:00:00 EST 2024 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.132.072501· OSTI ID:2309727

^[1]; ^[2]; ^[2]; Hausmann, M. ^[2]; Kwan, E. ^[2]; Portillo, M. ^[2]; Smith, M. ^[2]; Ahn, D. S. ^[3]; ^[2]; Chyzh, R. ^[2]; ^[2]; ^[2]; Kubo, T. ^[4]; ^[2]; Ostroumov, P. N. ^[2]; ^[2]; Sherrill, B. M. ^[2]; Stolz, A. ^[2]; ^[2]; ^[2] more »

Michigan State Univ., East Lansing, MI (United States); Michigan State University
Michigan State Univ., East Lansing, MI (United States)
Institute for Basic Science, Daejeon (Korea, Republic of). Center for Exotic Nuclear Studies
RIKEN Nishina Center for Accelerator-Based Science, Wako (Japan)

Five previously unknown isotopes (^182,183Tm, ^186,187Yb, ¹⁹⁰Lu) were produced, separated, and identified for the first time at the Facility for Rare Isotope Beams (FRIB) using the Advanced Rare Isotope Separator (ARIS). The new isotopes were formed through the interaction of a ¹⁹⁸Pt beam with a carbon target at an energy of 186 MeV/u and with a primary beam power of 1.5 kW. Event-by-event particle identification of A, Z, and q for the reaction products was performed by combining measurements of the energy loss, time of flight, magnetic rigidity Bρ, and total kinetic energy. The ARIS separator has a novel two-stage design with high resolving power to strongly suppress contaminant beams. Finally, this successful new isotope search was performed less than one year after FRIB operations began and demonstrates the discovery potential of the facility which will ultimately provide 400 kW of primary beam power.

View Accepted Manuscript (DOE)

Research Organization:: Michigan State Univ., East Lansing, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)

Grant/Contract Number:: SC0023633

OSTI ID:: 2309727

Alternate ID(s):: OSTI ID: 2474403

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 132; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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