[25p-F308-1~10] CS.1 Code-sharing Session of 2.3 & 7.5

[25p-F308-8] Production of Negative Ion Beams from the Rubidium Sputtering Ion Source

〇Kimikazu Sasa^1,2, Tsutomu Takahashi¹, Daisuke Shiine², Masumi Matsumura¹, Aya Sakaguchi² (1.UTTAC, 2.Univ. Tsukuba)

Keywords:Rb sputtering ion source, negative ion, Accelerator Mass Spectrometry

We have developed the accelerator mass spectrometry (AMS) method for Cs-135 in order to apply for environmental researches. The Multi-Cathode Source of Negative Ions by Cesium Sputtering (MC-SNICS, National Electrostatics Corp.) was modified using a Rb sputtering instead of Cs for Cs-135 AMS. As a result, it was possible to extract negative hydrogen ions with a beam current of 10 μA or more and ¹³³Cs¹⁹F₂^- with a beam current of 100 nA from the Rb sputtering ion source.