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Conference Papers Year : 2002

Optical pumping of helium-3 at high pressure and magnetic field

Abstract

At low magnetic field, the efficiency of metastability-exchange optical pumping of helium-3 is known to be optimal for pressures around 1 mbar. We demonstrate on several examples (up to 32 mbar) that operating in a higher magnetic field (up to 0.12 T) can significantly increase the nuclear polarisations achieved at higher pressures. Since polarisation measurements cannot be made with the standard technique, we use a general optical method based on absorption measurements at 1083 nm to measure the polarisation of the atoms in the ground state.
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Dates and versions

hal-00002223 , version 1 (18-07-2004)

Identifiers

  • HAL Id : hal-00002223 , version 1

Cite

Pierre-Jean Nacher, Emmanuel Courtade, Marie Abboud, Alice Sinatra, Geneviève Tastevin, et al.. Optical pumping of helium-3 at high pressure and magnetic field. 2002, pp.2225-2236. ⟨hal-00002223⟩
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