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Cold Collision Frequency Shift in Two-Dimensional Atomic Hydrogen | J. Ahokas
; J. Jarvinen
; S. Vasiliev
; | Date: |
27 Oct 2006 | Subject: | Other | 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. | Source: | arXiv, cond-mat/0610766 | Services: | Forum | Review | PDF | Favorites |
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