[20p-PB5-1~85] 2 Ionizing Radiation (Poster)

[20p-PB5-81] Present status of YU-AMS system I

Toru Moriya¹, Mirei Takeyama¹, Takayuki Araki¹, Rie Shitara¹, Rimi Sato¹, Hirohisa Sakurai¹, 〇Fuyuki Tokanai¹ (1.YU-AMS)

Keywords:accelerator mass spectrometry (AMS), carbon-14

An accelerator mass spectrometry (AMS) system and an automated graphitization line were installed at Yamagata University (YU) in 2009. This is the first AMS system to be installed at a university in northern Japan (Tohoku-Hokkaido region). A second automated graphitization line and an additional ion source for the YU-AMS system were installed to meet the requirement of ¹⁴C measurement for pharmacological and medical applications in 2014. In 2015, a phosphoric acid treatment system was also developed for the radiocarbon dating of calcium carbonate (CaCO₃) in shell and coral samples. Approximately 2,000 samples are measured per year using the YU-AMS system. Performance tests on the YU-AMS system were carried out by measuring the C-series standard samples (C1-C9) and oxalic acid II (HOxII). The results of the ¹⁴C concentration pMC and δ¹³C ‰ are in good agreement with the consensus values. In this conference, we will present a present status of the YU-AMS in 2018.