https://doi.org/10.1140/epja/s10050-023-01009-4
Regular Article - Experimental Physics
Recent achievements at the Rare-RI Ring, a unique mass spectrometer at the RIBF/RIKEN
1
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
2
RIKEN Nishina Center for Accelerator Based Science, 351-0198, Wako, Saitama, Japan
3
Department of Physics, Saitama University, 338-8570, Saitama, Saitama, Japan
4
Institute of Physics, University of Tsukuba, 305-8571, Tsubuka, Ibaraki, Japan
Received:
30
November
2022
Accepted:
13
April
2023
Published online:
28
April
2023
The Rare-RI Ring is a storage ring optimised for Isochronous Mass Spectrometry and operating at the RI Beam Factory in RIKEN. As its name suggests, this device was built to fulfill the demand of high precision mass measurement of rare isotopes which are produced with low yield and have very short half-lives. Unlike other storage rings in operation, the Rare-RI Ring is a cyclotron-like ring and accepts pre-selected rare isotopes event-by-event. This unique operation mode insures achieving high precision mass measurement of the rarest isotopes over a large momentum acceptance. The hurdle of achieving mass measurement at ppm level was overcome using this new mass spectrometer. The new mass of an isotope of palladium with 15 neutrons away from stability emphasized the importance of precision mass measurement in the r-process.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
