The published value is not precise enough, I need a value with the error in the 5th decimal (at least) in order to compare the value I got from analysis of the hyperfine structure.
well, Jonas, there has been only one measurement: K F Smith and P J Unsworth 1965, Proc. Phys. Soc. 86, 1249
The hyperfine structure of 167Er and magnetic moments of 143, 145Nd and 167Er by atomic beam triple magnetic resonance
Their relative error is 0.74% but it is hard to see in the paper, how much of this error is common to the two measurements such that it could be reduced.
Are'nt you able to improve?
The main sources of error are the magnetic field (which is not the same in the measurements, due to drifts in the system) and the values of A & B constants. I might be able to reduce the error by a factor 2-5, but that is not sufficient. A new NMR measurement would be preferable, even with chemical shifts in the system.
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