High nuclear polarization of helium-3 at low and high pressure by metastability exchange optical pumping at 1.5 Tesla

Abstract : We perform metastability exchange optical pumping of helium-3 in a strong magnetic field of 1.5 T. The achieved nuclear polarization, from 80% at 1.33 mbar to 25% at 67 mbar, shows a substantial improvement at high pressures with respect to standard low-field optical pumping. The specific mechanisms of metastability exchange optical pumping at high field are investigated, advantages and intrinsic limitations are discussed. From a practical point of view, our results open the way to alternative technological solutions for polarized helium-3 applications and in particular for magnetic resonance imaging of human lungs.
Document type :
Journal articles
Complete list of metadatas

Cited literature [6 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00000535
Contributor : Alice Sinatra <>
Submitted on : Wednesday, September 22, 2004 - 12:07:34 PM
Last modification on : Monday, September 2, 2019 - 5:54:14 PM
Long-term archiving on : Friday, September 17, 2010 - 6:15:01 PM

Files

Identifiers

Citation

Marie Abboud, Alice Sinatra, Xavier Maître, Geneviève Tastevin, Pierre-Jean Nacher. High nuclear polarization of helium-3 at low and high pressure by metastability exchange optical pumping at 1.5 Tesla. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2004, 68, pp.480. ⟨10.1209/epl/i2004-10237-y⟩. ⟨hal-00000535v2⟩

Share

Metrics

Record views

353

Files downloads

235