Polarized nuclear target based on parahydrogen induced polarization
  We discuss a novel concept of a polarized nuclear target for accelerator fixed-target scattering experiments, which is based on parahydrogen induced polarization (PHIP). One may be able to reach a 33% free-proton polarization in the ethane molecule. The potential advantages of such a target include operation at zero magnetic field, fast ($\sim$100 Hz) polarization reversal, and operation with large intensity of an electron beam. 
D. Budker, M. P. Ledbetter, S. Appelt, L. S. Bouchard, and B.   Wojtsekhowski
nucl-ex physics.chem-ph physics.ins-det