Polarization measurement of a slow positron beam generated with a compact cyclotron

T. Kumita, M. Chiba, R. Hamatsu, M. Hirose, T. Hirose, H. Iijima, M. Irako, M. Washio, J. Yang

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We measured polarization of a slow positron beam produced in online-manner via the 27Al(p,n) 27Si reaction caused by proton irradiation. The intensity of this beam is measured to be 5105 e+/sec for protons with the energy of 18MeV and the current of 30mA. The polarization measurement makes use of the magnetic quenching of positronium due to Zeeman effect in a magnetic field of a several kG. The polarization of the beam is evaluated to be 38.44.0(statistical)5.8(systematic)%, which is consistent with the estimation based on our Monte Carlo simulations including depolarization processes in matter.

本文言語English
ページ(範囲)656-658
ページ数3
ジャーナルMaterials Science Forum
255-257
DOI
出版ステータスPublished - 1997
外部発表はい

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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