Phys. Rev. A 49, 2766–2770 (1994)Self-calibrating measurement of polarization-dependent frequency shifts from Rb-3He collisionsReceived 27 May 1993; published in the issue dated April 1994 We have studied the frequency shift in the Rb electron-paramagnetic-resonance (EPR) line due to the presence of nuclear polarized 3He. By measuring the resonant frequency in a cylindrical cell oriented both parallel and perpendicular to an applied magnetic field, we determined the classical EPR shift due to long-range macroscopic fields. We thus calibrated the larger, geometry-independent shift, due to the Fermi-contact interaction between the Rb electron and the 3He nucleus, to 2.5%. The EPR frequency shift can be used to determine the 3He nuclear polarization. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.49.2766
DOI:
10.1103/PhysRevA.49.2766
PACS:
32.80.Bx, 32.30.Dx, 33.25.-j, 33.35.-q
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