Enhancement of {sup 129}Xe polarization by off-resonant spin exchange optical pumping

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3478707· OSTI ID:21476477

Parnell, S R; Deppe, M H; Parra-Robles, J; Wild, J M ^[1]

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1. Unit of Academic Radiology, University of Sheffield, Royal Hallamshire Hospital, Glossop Road, Sheffield, S10 2JF (United Kingdom)

A high power narrow line width (38 W, 0.09 nm full width at half maximum) external cavity diode laser is investigated for rubidium spin exchange optical pumping of {sup 129}Xe. This tunable photon source has a constant line width, independent of operating power or wavelength within a 1 nm tuning range. When using this laser, an increase in the {sup 129}Xe nuclear polarization is observed when optically pumping at a lower wavelength than the measured Rb electron D{sub 1} absorption. The exact detuning from D{sub 1} for the highest polarization is dependent upon the gas density. Furthermore, at high power and/or high Rb density, a reduction in the polarization occurs at the optimum wavelength as previously reported in spin exchange optical pumping studies of {sup 3}He which is consistent with high absorption close to the cell front face. These results are encouraging for moderate high throughput polarization of {sup 129}Xe in the midpressure range of (0.5-2.0 amagat).

• OSTI ID: 21476477
• Journal Information: Journal of Applied Physics, Vol. 108, Issue 6; Other Information: DOI: 10.1063/1.3478707; (c) 2010 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ATOM-MOLECULE COLLISIONS
ELECTRONS
HELIUM 3
LASER CAVITIES
LINE WIDTHS
OPTICAL PUMPING
PHOTON-ATOM COLLISIONS
PHOTONS
POLARIZATION
RUBIDIUM
SOLIDS
SPIN EXCHANGE
XENON
XENON 129
ALKALI METALS
ATOM COLLISIONS
BOSONS
COLLISIONS
DAYS LIVING RADIOISOTOPES
ELEMENTARY PARTICLES
ELEMENTS
EVEN-ODD NUCLEI
FERMIONS
FLUIDS
GASES
HELIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEPTONS
LIGHT NUCLEI
MASSLESS PARTICLES
METALS
MOLECULE COLLISIONS
NONMETALS
NUCLEI
PHOTON COLLISIONS
PUMPING
RADIOISOTOPES
RARE GASES
SORPTION
STABLE ISOTOPES
XENON ISOTOPES