Lifetime measurement of the260 g.s. At SAMURAI

S. Storck*, C. Caesar, J. Kahlbow, V. Panin, D. S. Ahn, L. Atar, T. Aumann, H. Baba, K. Boretzky, H. Chae, N. Chiga, S. Choi, M. L. Cortés, D. Cortina-Gil, Q. Deshayes, P. Doornenbal, Z. Elekes, N. Fukuda, I. Gaparic, K. I. HahnZ. Halász, A. Hirayama, J. Hwang, N. Inabe, T. Isobe, S. Kim, T. Kobayashi, D. Körper, Y. Kondo, Y. Kubota, I. Kuti, C. Lehr, S. Lindberg, M. Marques, M. Matsumoto, T. Murakami, I. Murray, T. Nakamura, T. Nilsson, H. Otsu, S. Paschalis, M. Parlog, M. Petri, D. Rossi, A. Saito, M. Sasano, H. Scheit, P. Schrock, Y. Shimizu, H. Simon, D. Sohler, O. Sorlin, L. Stuhl, H. Suzuki, I. Syndikus, H. Takeda, H. Törnqvist, Y. Togano, T. Tomai, T. Uesaka, H. Yamada, Z. Yang, M. Yasuda, K. I. Yoneda

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The ground state of the neutron unbound nucleus26O is speculated to have a lifetime in the pico-second regime. In order to determine the decay lifetime of the26O ground state with high sensitivity and precision, a new method has been applied. The experiment was performed in December 2016 at the Superconducting Analyzer for MUlti-particle from Radio Isotope Beams (SAMURAI) at the Radioactive Isotope Beam Factory (RIBF) at RIKEN. A27F beam was produced in the fragment separator BigRIPS and impinged on a W/Pt target stack where26O was produced. According to the lifetime, the decay of26O happens either in or outside the target. Thus, the velocity difference between the decay neutrons and the fragment24O delivers a characteristic spectrum from which the lifetime can be extracted.

Original languageEnglish
Article number012106
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 23 Dec 2020
Externally publishedYes
Event27th International Nuclear Physics Conference, INPC 2019 - Glasgow, United Kingdom
Duration: 29 Jul 20192 Aug 2019


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