Doppelresonanzexperimente zur Untersuchung der Hyperfeinstruktur des 6s6p ³ P ₁-Zustandes von¹⁷¹Yb und¹⁷³Yb

Abstract

For the odd Yb isotopes¹⁷¹Yb and¹⁷³Yb the hyperfine splitting of the 6s6p ³ P ₁ state has been measured by optical double resonance in zero magnetic field. Taking into account second order corrections due to the influence of the 6¹ P ₁ and 6³ P _0,2 states, the following results for the magnetic splitting constantA and the electric quadrupole interaction constantB have been derived: A(¹⁷¹Yb)=3958.228 (60) Mc/s, A(¹⁷³Yb)=−1094.318 (35) Mc/s, S(¹⁷³Yb)=−825.904 (85) Mc/s. The hyperfine structure anomaly of the isotopes¹⁷¹Yb and^{171 173}Yb was determined to be Δ=−0.352 (10)%.