Effects of nitrogen quenching gas on spin-exchange optical pumping of {sup 3}He

Journal Article · Fri Oct 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.043417· OSTI ID:21450809

Lancor, B; Walker, T G ^[1]

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1. Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

We consider the degree of conservation of nuclear spin polarization in the process of optical pumping under typical spin-exchange optical pumping conditions. Previous analyses have assumed that negligible nuclear spin precession occurs during the brief periods of time in which the alkali-metal atoms are in the excited state after absorbing photons and before undergoing quenching collisions with nitrogen molecules. We include excited-state hyperfine interactions, electronic spin relaxation in collisions with He and N{sub 2}, spontaneous emission, quenching collisions, and a simplified treatment of radiation trapping.

• OSTI ID: 21450809
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ANGULAR MOMENTUM
ATOM COLLISIONS
ATOMS
BOSONS
COLLISIONS
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
EVEN-ODD NUCLEI
HELIUM 3
HELIUM ISOTOPES
HYPERFINE STRUCTURE
ISOTOPES
LIGHT NUCLEI
MASSLESS PARTICLES
METALS
MOLECULE COLLISIONS
MOLECULES
NITROGEN
NONMETALS
NUCLEI
OPTICAL PUMPING
ORIENTATION
PARTICLE PROPERTIES
PHOTON EMISSION
PHOTONS
PRECESSION
PUMPING
QUENCHING
RELAXATION
SPIN
SPIN EXCHANGE
SPIN ORIENTATION
STABLE ISOTOPES
TRAPPING