Abstract
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 32Al with spin alignment of 8(1) % was successfully produced from a primary beam of 48Ca, with 33Al 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.
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Y.I. is grateful to the Special Postdoctoral Researchers Program, RIKEN. This work was partly supported by the JSPS KAKENHI (22340071 and 20532089), by the JSPS and MAEE under the Japan-France Integrated Action Program (SAKURA), and by the Bulgarian National Fund (grant DID-02/16).
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Ichikawa, Y., Ueno, H., Ishii, Y. et al. Novel method for the production of spin-aligned RI beams in projectile fragmentation reaction with the dispersion matching technique. Hyperfine Interact 220, 47–51 (2013). https://doi.org/10.1007/s10751-012-0682-8
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DOI: https://doi.org/10.1007/s10751-012-0682-8