Cold Collision Frequency Shift in Two-Dimensional Atomic Hydrogen
arXiv:cond-mat/0610766 · doi:10.1103/PhysRevLett.98.043004
Abstract
We report a measurement of the cold collision frequency shift in atomic hydrogen gas adsorbed on the surface of superfluid 4He at T<=90 mK. Using two-photon electron and nuclear magnetic resonance in 4.6 T field we separate the resonance line shifts due to the dipolar and exchange interactions, both proportional to surface density sigma. We find the clock shift Delta v_c = -1.0(1)x10^-7 Hz cm^-2 x sigma, which is about 100 times smaller than the value predicted by the mean field theory and known scattering lengths in the 3D case.
4 pages, 3 figures
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Cited by in corpus (5)
- Explanation of 100-fold reduction of spectral shifts for hydrogen on helium films
- Hyperfine frequency shift in two-dimensional atomic hydrogen
- Interaction-enhanced double resonance in cold gases
- Spin-polarized hydrogen adsorbed on the surface of superfluid 4He
- Nonlinear Spectroscopic Effects in Quantum Gases Induced by Atom-Atom Interactions