| 摘要 |
<p>This invention provides a vessel for rare gas filling, which can realize a substantially completely circularly polarized state within the vessel by using a single crystal material for a window for light incidence of which the thickness and the direction of the crystal axis have been optimized, and a method for polarization of a rare gas atomic nucleus using the vessel. According to the vessel and polarization method, the alkali resistance is high, the pressure resistance is high, no permeation of <SUP>3</SUP>He occurs, and, in addition, neutron absorption corresponding to application to basic science, for example, neutron scattering, is negligible. The vessel for rare gas filling comprises a vessel body (3), and a pipe (4), connected to the vessel body (3), for introducing a rare gas-containing gas and an alkali metal into the vessel body (3). A window (2) for light incidence, formed of a single crystal material, in which the thickness and the direction of the crystal axis have been regulated to a predetermined thickness and a predetermined direction, respectively, is provided in the vessel body (3). The vessel for rare gas filling is preferably formed of sapphire or the like.</p> |
