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Novel method for the production of spin-aligned RI beams in projectile fragmentation reaction with the dispersion matching technique

Y. Ichikawa H. Ueno Y. Ishii T. Furukawa A. Yoshimi D. Kameda H. Watanabe N. Aoi K. Asahi D.L. Balabanski R. Chevrier 1 J.M. Daugas 1 N. Fukuda G. Georgiev 2 H. Hayashi H. Iijima N. Inabe T. Inoue M. Ishihara T. Kubo T. Nanao T. Ohnishi K. Suzuki M. Tsuchiya H. Takeda M.M. Rajabali
2 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
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 Al-32 with spin alignment of 8(1) % was successfully 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.
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Y. Ichikawa, H. Ueno, Y. Ishii, T. Furukawa, A. Yoshimi, et al.. Novel method for the production of spin-aligned RI beams in projectile fragmentation reaction with the dispersion matching technique. 4th Joint International Conference on Hyperfine Interactions / International Symposium on Nuclear Quadrupole Interactions (HFI/NQI), Sep 2012, Beijing, China. pp.47-51, ⟨10.1007/s10751-012-0682-8⟩. ⟨in2p3-00924193⟩

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