Hyperfine Structure ofBi209

摘要: We have used the atomic-beam magnetic-resonance technique to improve and extend measurements of Title Smith on hyperfine structure $(6{p}^{3}) ^{4}S_{\frac{3}{2}}$ ground state ($I=\frac{9}{2}$). measured three zero-field intervals computed octupole interaction constant. Our experimental results are ${\ensuremath{\nu}}_{1}(F=5\ensuremath{\rightarrow}F=6)=2884.666(2)$, ${\ensuremath{\nu}}_{2}(F=4\ensuremath{\rightarrow}F=5)=2171.419(2)$, ${\ensuremath{\nu}}_{3}(F=3\ensuremath{\rightarrow}F=4)=1584.502(2)$ MHz. From these values, we obtain for hyperfine-interaction constants, corrected pseudo-octupole interactions due perturbation by neighboring fine-structure levels $A=\ensuremath{-}446.937(1)$, $B=\ensuremath{-}305.067(2)$, $C=0.0183(1)$ The assigned errors include only in measurement intervals, no estimate theoretical corrections has been made. also data Lurio Landman $(6{p}^{3})^{2}P_{\frac{3}{2}}$ metastable bismuth octupolelike deduced a fairly consistent value one-electron octupole-interaction average constant ${c}_{\frac{3}{2}}=0.0206$ MHz find that nuclear magnetic moment is $0.0086{\ensuremath{\mu}}_{N}\mathrm{b}$. This compared with prediction shell model.