= A New Method of Measuring Nuclear Magnetic Moment
{tag=Paper published on Physical Review}
{title2=1938}
https://journals.aps.org/pr/abstract/10.1103/PhysRev.53.318
<Physical Review> Volume 53, page 318.
Not <paywalled> as of 2024! A miracle! It is barely one page long.
This is the paper that contains the first successful report of experimental <nuclear magnetic moment> observation.
They promise more at the end:
> We have tried this experiment with LiC1 and observed the resonance peaks of Li and Cl. The effects are very striking and the resonances sharp (Fig. 1). A full account of this experiment, together with the values of the nuclear moments, will be published when the homogeneous field is recalibrated.
and this promise was fulfilled on the later <The Molecular Beam Resonance Method for Measuring Nuclear Magnetic Moments>.
\Image[https://ia600106.us.archive.org/33/items/a-new-method-of-measuring-nuclear-magnetic-moment-fig-1/A_New_Method_of_Measuring_Nuclear_Magnetic_Moment_Fig_1.png]
{title=Figure 1 of <A New Method of Measuring Nuclear Magnetic Moment>}
{description=
This figure sums it all up: they were measuring the intensity of one side of a <molecular beam> after a <Stern-Gerlach experiment>.
Then, they vary the constant <magnetic field> before the splitting, and at the same time apply a fixed radio frequency to the beam.
When the constant magnetic field makes the energy gap match the radio frequency input, <nuclear spin> of many atoms goes to the anti-aligned direction, the beam gets diverted, so the previously detected beam gets weaker.
}
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