Spin-polarized radioactive isotope beam produced by tilted-foil technique

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• 作者：Yoshikazu Hirayama ; Mototsugu Mihara ; Yutaka Watanabe ; Sun-Chan Jeong ; Hiroari Miyatake ; Sadao Momota ; Takashi Hashimoto ; Nobuaki Imai ; Kensaku Matsuta ; Hironobu Ishiyama ; Shin-ichi Ichikawa ; Tetsuro Ishii ; Takuji Izumikawa ; Ichiro Katayama ; Hirokane Kawakami ; Hirokazu Kawamura ; Ichiro Nishinaka ; Katsuhisa Nishio ; Hiroyuki Makii ; Shin-ichi Mitsuoka ; et al.
• 关键词：Nuclear polarization ; Tilted-foil technique ; g-Factor
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：15 December, 2013
• 年：2013
• 卷：317
• 期：part_PB
• 页码：693-696
• 全文大小：548 K

文摘

The tilted-foil method for producing spin-polarized radioactive isotope beams has been studied using the re-accelerated radioactive ⁸Li and ¹²³In beams produced at Tokai Radioactive Ion Accelerator Complex (TRIAC) facility. We successfully produced polarization in a ⁸Li beam of 7.3(5)% using thin polystyrene foils (4.2 渭g/cm²). The systematic study of the nuclear polarization as a function of the number of foils and beam energy has been performed, confirming the features of the tilted-foil technique experimentally. After the study, a spin-polarized radioactive ¹²³In beam, which is the heaviest ever polarized in its ground state by this method, has been successfully generated by the tilted-foil method, for the nuclear spectroscopy around the doubly magic nucleus ¹³²Sn.