I have estimated widths for $2n$ decay for all positive-parity states expected in the region of 4.0–5.5 MeV in ${}^{12}\mathrm{Be}$. Results indicate that $2n$ decay could compete with $1n$ decay for one of the states—the fourth $2^{+}$ that is likely to be the state observed in one-proton removal from ${}^{13}\mathrm{B}$.

• Received 18 August 2018

DOI:https://doi.org/10.1103/PhysRevC.98.041301