The 4th Joint Meeting of the 16th International Conference on Hyperfine Interactions and the 20th International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2012)
A novel method to produce spin-aligned rare-isotope (RI) beam has been developed, that is the two-step projectile fragmentation method with a technique of dispersion matching. The present method was verified in an experiment at the RIKEN RIBF, where an RI beam of Al-32 with spin alignment of 8(1) % wassuccessfully produced from a primary beam of Ca-48, with Al-33 as an intermediate nucleus. Figure of merit of the present method was found to be improved by a factor larger than 50 compared with a conventional method employing single-step projectile fragmentation.