“…In related research, spin-polarized H (confined by liquid helium walls) is studied at high densities as a two or three dimensional quantum gas [9]. Attained densities exceed 10 13 cm 22 in 2D and 10 19 cm 23 in 3D [10]. Here also, optical diagnostics are important.…”
Section: Resonance Enhanced Two-photon Spectroscopy Of Magnetically Tmentioning
“…In related research, spin-polarized H (confined by liquid helium walls) is studied at high densities as a two or three dimensional quantum gas [9]. Attained densities exceed 10 13 cm 22 in 2D and 10 19 cm 23 in 3D [10]. Here also, optical diagnostics are important.…”
Section: Resonance Enhanced Two-photon Spectroscopy Of Magnetically Tmentioning
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