Spins and parities of high spin states above the particle-binding threshold
in Mg-24 were determined with a basis expansion technique using triple and
quadruple angular correlations between ce particles and gamma rays. The fi
rst unambiguous identification of a 10(+) state is reported. Located at 19.
2(1) MeV, this state decays predominantly by alpha emission, although a can
didate gamma -decay branch with a 5.927 MeV transition connecting this 10() level to the rotational 8(+) state at 13.2 MeV was identified as wen. The
corresponding gamma-alpha branching ratio is 7(3) X 10(-4).