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Review of Scientific Instruments

Spontaneous nuclear polarization of atomic hydrogen at low magnetic field

V. G. Luppov, T. Roser

Published Oct 1, 1992• 1 citation
Publisher

Abstract

The known spin-exchange rates of atomic hydrogen lead to fast spontaneous buildup of high nuclear polarization at low magnetic field. We propose to use the nuclear polarized atomic hydrogen gas to produce an intense ultracold nuclear polarized beam of atomic hydrogen.
DOI
10.1063/1.1143701

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Polarized atomic beam sources have been in operation for many years to produce either nuclear polarized atomic hydrogen or deuterium beams. In recent experiments, such a source was used to polarize both isotopes independently at the same time. By recombination of the atoms, hydrogen-deuterium molecules with all possible nuclear spin combinations can be created. Those spin isomers are useful for further applications, like precision spectroscopy, as polarized targets for laser-particle acceleration, polarized fuel for fusion reactors, or as an option for future measurements of electric dipole moments.
Optical pumping of potassium atoms followed by spin-exchange scattering with deuterium atoms in a high magnetic field was found to produce an intense, highly spin-polarized beam of atomic deuterium. In particular, the atomic polarization of deuterium was determined to be (73\ifmmode\pm\else\textpm\fi{}3)% at an intensity of 2.1\ifmmode\times\else\texttimes\fi{}1017{10}^{17}1017 atoms/s.