Hyperfine Structure and Nuclear Moments of Bromine-82

The nuclear spin, the magnetic dipole, and the electric quadrupole interaction constants have been measured for 35-hr bromine-82 by the method of atomic beams. The results are $I=5$, |a|=205.04±0.05 Mc/sec, |b|=870.7±0.9 Mc/sec, and b/a=-4.246±0.001.The nuclear magnetic and electric quadrupole moments obtained from these values of a and b are |μ|=1.6264±0.0005 nm, and |Q|=0.76±0.03 barn. While only the relative sign of μ and Q is determined, both μ and Q are almost certainly positive. A new method for solving the interaction Hamiltonian with magnetic field, for arbitrary I and J, by using an IBM 650 computer, is described.