[11p-E207-1~6] CS.1 Code-sharing session of 2.3&7.4

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[11p-E207-4] Low-background Accelerator Mass Spectrometry of Iodine-129 and Survey of Iodine Isotopic Ratios in the Hokuriku Region

〇Kimikazu Sasa^1,2, Masumi Matsumura¹, Tetsuro Yoshida¹, Tsutomu Takahashi¹, Tetsuya Matsunaka³ (1.CRiES, Univ. Tsukuba, 2.Pure Appl. Sci., Univ. Tsukuba, 3.LLRL, Kanazawa Univ.)

Keywords:

Iodine 129,Accelerator mass spectrometry,Crustal deformation research

The iodine isotopic ratios in spring and hot spring waters are relatively low, only about one order of magnitude above the AMS detection limit, and therefore require low-background measurement techniques. We report on the current status of low-background AMS measurement of ¹²⁹I and on a survey of iodine isotopic ratios in the Hokuriku region.