Description
β-decay spectroscopy is a powerful experimental tool for studying complex phenomena emerging in exotic neutron-rich nuclei, such as β-delayed one- and multi-neutron emission [1-3].
A novel approach to β-decay experiments, pioneered by a group from the University of Osaka [4,5], has recently been implemented at the VITO beamline [6] at ISOLDE. The new end station, called DeVITO [7], has been integrated with a laser polarisation setup, enabling β-decay spectroscopy studies with spin-oriented nuclei. This unique combination allows measurements of β-particle emission asymmetry in coincidence with γ-rays and/or neutrons, providing a solid foundation for unambiguous spin-parity assignments for states involved in allowed β transitions. This poster contribution presents the setup used in the first DeVITO experiment [8] as well as its physics motivation and preliminary results.
[1] Z. Xu, R. Grzywacz et al., Phys. Rev. Lett. 133, 042501 (2024).
[2] Z. Y. Xu, M. Madurga et al., Phys. Rev. Lett. 131, 022501 (2023).
[3] V. H. Phong et al., Phys. Rev. Lett. 129, 172701 (2022).
[4] H. Miyatake et al., Phys. Rev. C 67, 014306 (2003).
[5] H. Nishibata et al., Phys. Rev. C 99, 024322 (2019).
[6] M. Kowalska et al., Phys. G: Nucl. Part. Phys. 44, 084005 (2017).
[7] M. Piersa-Siłkowska and N. Azaryan, CERN EP Newsletter, September 2024. https://ep-news.web.cern.ch/content/isoldes-new-β-decay-station-unlocks-advanced-decay-spectroscopy-experiments-laser
[8] M. Piersa-Siłkowska, M. Madurga, M. Kowalska et al., CERN-INTC-2023-026 ; INTC-P-662.
| Work-package | WP2 - RIs for Nuclear Physics |
|---|---|
| Facility identifier | ISOLDE |
