The Hyperfine Structure of the3pP122State ofAl27

Abstract
The hyperfine structure interval of the 3pP122 state of Al27 has been measured and found to be 1506.14±0.05 Mc/sec. From this datum and the known hyperfine structure of the 3pP322 state a recalculation of the nuclear electric quadrupole moment, taking into consideration configuration interactiion, yields the value Q=+0.149×1024 cm2.