Speaker
Description
Studies of rare decay channels require special instrumentation providing high efficiency and sensitivity. An example of such an approach is the Optical Time Projection Chamber (OTPC) developed at the University of Warsaw. It was designed to study two-proton radioactivity (2p), but it proved to be an excellent tool for studies of other decay channels accompanied by the emission of charged particles. Among important results obtained with the help of the OTPC, in addition to 2p spectroscopy [1,2], are the first observation of the $\beta$-delayed three-proton emission in four nuclei [3,4,5,6], a study of 6He decay into the $\alpha + d$ continuum [7], and a study of $\beta$-delayed charged particle emission in the decay of 11Be [8].
In the talk, I will present the experimental technique based on the OTPC detector and illustrate it with a selection of results obtained with the help of it, focusing on the most recent achievements.
References
[1] K. Miernik et al., Phys. Rev. Lett. 99 (2007) 192501.
[2] M. Pomorski et al., Phys. Rev. C 90 (2014) 014311.
[3] K. Miernik et al., Phys. Rev. C 76 (2007) 041304(R).
[4] M. Pomorski et al., Phys. Rev. C 83 (2011) 014306.
[5] A.A. Lis et al., Phys. Rev. C 91 (2015) 064309.
[6] A.A. Ciemny et al., Phys. Rev. C 106 (2022) 014317
[7] M. Pfützner et al., Phys. Rev. C 92 (2015) 014316.
[8] N. Sokołowska et al., Phys. Rev. C (2024) 034328.
