A search for ${}^{19}\mathrm{Mg}$ was performed using projectile fragmentation of a $150\text{MeV}∕\text{nucleon}$ ${}^{36}\mathrm{Ar}$ beam. No events of ${}^{19}\mathrm{Mg}$ were observed. From the time of flight through the fragment separator an upper limit of $22\text{ns}$ for the half-life of ${}^{19}\mathrm{Mg}$ was established.

• Received 11 June 2003

DOI:https://doi.org/10.1103/PhysRevC.68.054309