The Puzzle of the ¹³Be

The structure of ¹³Be is of significant scientific importance since it offers insights on the evolution of the N=8 shell gap, the influence of the continuum, the nature of the neutron-drip line nuclei and the Borromean ¹⁴Be nucleus. Despite the considerable experimental work performed in the past, the position and ordering of the low-lying states remains uncertain. Consequently, we performed a transfer reaction experiment at ISAC II, TRIUMF using the ¹²Be(d,p)¹³Be reaction. The beam at 9.5 AMeV interacted with the IRIS solid D₂ target. The data are currently being analyzed and the preliminary results on the ¹³Be low-lying states will be presented here.