The tilted-foil method for producing spin-polarized radioactive isotope beams has been studied for the application to nuclear physics and materials science, using the radioactive nucleus 8Li (Iπ = 2+, g = 0.82678(9), T1/2 = 0.838(6)s) produced at the Tokai Radioactive Ion Accelerator Complex (TRIAC). We successfully produced polarization in a 8Li beam of 7.3 ± 0.5% using 15 thin polystyrene foils (4.2 μg/cm2) fabricated especially for this purpose. A systematic study of the nuclear polarization as a function of the number of foils, beam energy, tilt angle and foil material has been performed, confirming the features of the tilted-foil technique experimentally. The contributions made to the nuclear polarization of 8Li nuclei by the atomic states was investigated.
ASJC Scopus subject areas
- Nuclear and High Energy Physics