The Si-29(d, He-3)Al-28 reaction has been investigated at 29 MeV incid
ent energy. Observations using a split-pole magnetic spectrograph have
been made of 55 levels of Al-28 in the range of excitation energy bet
ween 0 and 6.7 MeV. Most of them have been identified with Al-28 level
s which have been previously observed by other techniques. The spectro
scopic factors have been obtained for 23 of these levels through disto
rted-wave Born approximation analyses of measured angular distribution
s. The levels at E(x)=3.105 and 3.762 MeV have been definitely assigne
d J(pi)=1+ and 0+, respectively. Four levels which are populated throu
gh the pickup of a l(p)=1 proton have been observed at E(x)=4.998, 5.4
06, 6.021, and 6.652 MeV. The excitation energies and spectroscopic fa
ctors for positive-parity states were compared with the results of a r
ecent, complete sd-shell space, shell-model calculation. This comparis
on led to the identification of 21 shell-model levels with experimenta
l levels. This comparison seems accurate enough to make very likely th
e J(pi)=3+ assignment for the levels at E(x)=2.988 and 4.597 MeV which
were previously assigned J(pi)=(1,3)+.