[24p-12B-1~15] CS.1 Code-sharing Session of 2.3 & 7.4

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

[24p-12B-4] Status of Detection Techniques and Developments for Difficult-to-measure Nuclides using the 6 MV Tandem Accelerator Mass Spectrometer

〇Kimikazu Sasa^1,2, Tsutomu Takahashi¹, Masumi Matsumura¹, Tetsuro Yoshida¹, Daisuke Shiine², Hodaka Takahashi², Aya Sakaguchi^1,2 (1.CRiES, Univ. Tsukuba, 2.Pure Appl. Sci., Univ. Tsukuba)

Keywords:

Accelerator Mass Spectrometry,Difficult-to-measure nuclides,Cesium-135

The 6 MV tandem accelerator mass spectrometer has been developed for sensitive detection of ultra-trace amounts of cosmogenic or anthropogenic nuclides at the University of Tsukuba. The acceleration to high energies enables the identification of particles of multiple nuclides, and so far six nuclides, ¹⁰Be, ¹⁴C, ²⁶Al, ³⁶Cl, ⁴¹Ca, and ¹²⁹I, have been detected at isotope ratio levels from 10^-10 to 10^-15. As new nuclides to be measured, we have been developing techniques for high-sensitive detection of ⁹⁰Sr, ¹³⁵Cs, and ²¹⁰Pb by accelerator mass spectrometry. The status of measurement techniques and developments for those new nuclides will be reported.