Decay study of $^{\mathrm{134}}$In and the beta-delayed neutron emission mechanism with ISOLDE Decay Station

Beta-delayed neutron emission in very neutron-rich nuclei plays an essential role in nuclear structure and the understanding of the astrophysical r-process. A leading theory poses the intermediate daughter nucleus to behave as a compound nucleus [1]. The beta-delayed neutron emission of $^{\mathrm{134}}$In is not well described by the neutron pandemonium hypothesis [2], therein providing a unique case to study neutron emission [3]. Single-particle states populated in $^{\mathrm{133}}$Sn [4] have dissimilar shell occupancy compared to neutron-hole states in daughter nucleus states populated in Gamow-Teller transitions. A short experiment observing $^{\mathrm{134}}$In decay was conducted with the ISOLDE Decay Station [5]. Multiple neutron-emitting states in $^{\mathrm{134}}$Sn populated in beta decay were identified and will be compared with statistical model predictions to establish if the assumption of the "compound nucleus" behavior can be valid for $^{\mathrm{134}}$In beta-delayed neutron emission. [1] T. Kawano et al., Phys. Rev. C 78, 054601 (2008). [2] J. Hardy et al., Nucl. Phys. A 305, 15 (1978). [3] P. Hoff et al., Phys. Rev. Lett. 77, 1020 (1996). [4] K.L. Jones et al., Nature 465, 454 (2010). [5] Z. Xu et al., this conference.