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MS: Fachverband Massenspektrometrie

MS 8: Multi-Reflection Time-of-Flight Spectrometers

MS 8.1: Invited Talk

Thursday, March 17, 2022, 10:30–11:00, MS-H9

Present and future prospects for MRTOF-based mass spectroscopy at KEK and RIKEN — •Peter Schury¹, Michiharu Wada¹, Toshitaka Niwase¹, Marco Rosenbusch¹, Yoshikazu Hirayama¹, Hironobu Ishiyama², Daiya Kaji², Sota Kimura², Hiroari Miyatake¹, Kouji Morimoto², Momo Mukai², Hiroari Miyatake¹, Aiko Takamine², Yutaka Watanabe¹, and Hermann Wollnik³ — ¹Wako Nuclear Science Center, Wako, Japan — ²RIKEN Nishina Center for Accelerator-Based Science — ³New Mexico State University

The KEK Wako Nuclear Science Center in collaboration with the RIKEN SLOWRI group presently operates three high-performance multi-reflection time-of-flight (MRTOF) mass spectrographs within the RIKEN accelerator complex – one for superheavy elements, one for in-flight fission and fragmentation products, and one for multi-nucleon transfer products – with more planned for the near future. With typical mass resolving power approaching m/Δ m=10⁶, we are able to achieve relative mass precision δ m/m∼10⁻⁷ with 100 detected ions; in many cases isomeric states can be resolved. By embedding silicon detectors within the time-of-flight detector, we have initiated a new field of decay-correlated mass spectroscopy which greatly enhances the capabilities of the MRTOF. The results of recent measurement campaigns and plans for future MRTOF-based studies will be presented.