Hyperpolarized Instruments

The principle that enables researchers to generate hyperpolarization in gases (e.g. hyperpolarized ₁₂₉Xe or ₃He) via spin exchange collisions. The collisions are mainly binary collisions that depend on thermal velocity at high pressures and also short-lived van der Waals interactions or three-body collisions that depend on the partial pressure at low pressure.

The basic structure diagram of the ₁₂₉Xe hyperpolarizer is shown above.  It features an optical cell used for optical pumping and spin-exchange collisions, collection system, gas supply system, vacuum system.  A computer is used for monitoring and controlling the process.