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Tilted-foil technique for producing a spin-polarized radioactive isotope beam

  • Y. HirayamaEmail author
  • M. Mihara
  • Y. X. Watanabe
  • S. C. Jeong
  • H. Miyatake
  • S. Momota
  • T. Hashimoto
  • N. Imai
  • K. Matsuta
  • H. Ishiyama
  • S. Ichikawa
  • T. Ishii
  • T. Izumikawa
  • I. Katayama
  • H. Kawakami
  • H. Kawamura
  • I. Nishinaka
  • K. Nishio
  • H. Makii
  • S. Mitsuoka
  • A. Osa
  • Y. Otokawa
  • T. K. Sato
Regular Article - Experimental Physics

Abstract

The tilted-foil method for producing spin-polarized radioactive isotope beams has been studied for the application to nuclear physics and materials science, using the radioactive nucleus 8Li ( \(\ensuremath I^{\pi}=2^+\) , g = 0.82678(9) , \(\ensuremath T_{1/2}=0.838(6)\) s) produced at the Tokai Radioactive Ion Accelerator Complex (TRIAC). We successfully produced polarization in a 8Li beam of \(\ensuremath 7.3\pm0.5\) % using 15 thin polystyrene foils (4.2 \(\ensuremath \mu \mathrm{g/cm}^2\) fabricated especially for this purpose. A systematic study of the nuclear polarization as a function of the number of foils, beam energy, tilt angle and foil material has been performed, confirming the features of the tilted-foil technique experimentally. The contributions made to the nuclear polarization of 8Li nuclei by the atomic states was investigated.

Keywords

Tilt Angle Beam Energy Atomic State Nuclear Polarization Atomic Polarization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Y. Hirayama
    • 1
    Email author
  • M. Mihara
    • 2
  • Y. X. Watanabe
    • 1
  • S. C. Jeong
    • 1
  • H. Miyatake
    • 1
  • S. Momota
    • 3
  • T. Hashimoto
    • 4
  • N. Imai
    • 1
  • K. Matsuta
    • 2
  • H. Ishiyama
    • 1
  • S. Ichikawa
    • 4
  • T. Ishii
    • 4
  • T. Izumikawa
    • 5
  • I. Katayama
    • 1
  • H. Kawakami
    • 1
  • H. Kawamura
    • 6
  • I. Nishinaka
    • 4
  • K. Nishio
    • 4
  • H. Makii
    • 4
  • S. Mitsuoka
    • 4
  • A. Osa
    • 4
  • Y. Otokawa
    • 4
  • T. K. Sato
    • 4
  1. 1.Institute of Particle and Nuclear StudiesHigh Energy Accelerator Research Organization (KEK)IbarakiJapan
  2. 2.Department of PhysicsOsaka UniversityOsakaJapan
  3. 3.Kochi University of TechnologyKochiJapan
  4. 4.Japan Atomic Energy Agency (JAEA)IbarakiJapan
  5. 5.Radioisotope CenterNiigata UniversityNiigataJapan
  6. 6.Department of PhysicsRikkyo UniversityTokyoJapan

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