The ${\beta }^{+}$ decay of very neutron-deficient ${}^{43}\mathrm{Cr}$ was studied by means of an imaging time projection chamber that allowed recording tracks of charged particles. Events of $\beta$-delayed emission of one, two, and three protons were clearly identified. The absolute branching ratios for these channels were determined to be ($81\pm 4$)%, ($7.1\pm 0.4$)%, and ($0.08\pm 0.03$)%, respectively. ${}^{43}\mathrm{Cr}$ is thus established as the second case in which the $\beta$-3$p$ decay occurs. Although the feeding to the proton-bound states in ${}^{43}\mathrm{V}$ is expected to be negligible, the large branching ratio of ($12\pm 4$)% for decays without proton emission is found.

• Received 11 November 2010

DOI:https://doi.org/10.1103/PhysRevC.83.014306