Hyperfine Structure and Nuclear Moments of the Stable Bromine Isotopes

Abstract

The hyperfine structure of the ${}_{}{}^2{}_{}{}^{}P_{\frac{3}{2}}^{}{}_{}{}^{}$ state of atomic ${\mathrm{Br}}^{79}$ and ${\mathrm{Br}}^{81}$ has been investigated by the atomic-beam, magnetic-resonance method. The following values have been obtained for the nuclear magnetic dipole interaction constant, $a$, and the nuclear electric quadrupole interaction constant, $b$: $a^{79}=884.810\mathrm{}\pm 0.003 \mathrm{Mc}/sec, a^{81}=953.770\mathrm{}\pm 0.003 \mathrm{Mc}/sec,$ $b^{79}=-384.878\mathrm{}\pm 0.008 \mathrm{Mc}/sec, b^{81}=-321.516\mathrm{}\pm 0.008 \mathrm{Mc}/sec.$