Abstract
Using the Mössbauer effect of the 130 keV transition in 195Pt the g-factor of the first 5 2 − level in 195Pt was derived from magnetic hyperfine splitting in an Pt-Fe alloy: g ( 5 2 −) = 0.35±0.042 . The known g-factors of the if 1 2 - ground state and the 99 keV 3 2 − it possible to determine the magnetic field at the site of the Pt nucleus with high accuracy. The experimental line-widths of the resonance curves are in excellent agreement with lifetime measurements. Comparison of the isomer shift measurements of the 99 keV and the 130 keV transitions give Δ〈r 2〉 130 Δ〈r 2〉 99 = 1.61±0.20 . The experimental results are compared with theoretical calculations.
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