Spin-aligned RI beams via two-step fragmentation reactions

[摘要] A method to produce spin-aligned rare isotope (RI) beams has been developed, where a scheme of two-step projectile fragmentation to produce the RI of interest with high spin alignment and a technique of momentum-dispersion matching are combined. Effectiveness of the present method was demonstrated in an experiment at the RIKEN RIBF, where an RI beam of Al-32 with spin alignment of 8(1)% was successfully produced from a primary beam of Ca-48, via an intermediate RI of Al-33. Figure of merit of the present method was found to be more than 50 times greater than that of the conventional method employing single-step projectile fragmentation. (C) 2013 Elsevier B.V. All rights reserved.

[发布日期] 2013-12-15

[效力级别]  Proceedings Paper

[关键词] Nuclear spin;Nuclear moment;RI beam