Efficient radiocarbon measurements on marine and terrestrial samples with single stage Accelerator Mass Spectrometry at the Atmosphere and Ocean Research Institute, University of Tokyo

• Published in: Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2022-12, Vol.532, p.62-67
• Main Authors: Yokoyama, Yusuke, Miyairi, Yosuke, Aze, Takahiro, Sawada, Chikako, Ando, Yuka, Izawa, Satomi, Ueno, Yoshiko, Hirabayashi, Shoko, Fukuyo, Naoto, Ota, Kosuke, Shimizu, Yusuke, Zeng, Yuning, Lan, Hui, Tsuneoka, Ren, Ando, Kozue, Nemoto, Karin, Obrochta, Stephen, Behrens, Bethany, Tam, Evan, Leggett, Kai, Rzeszewicz, Jian, Huang, Zihan, Kondo, Reisuke, Nagata, Toshi
• Format: Article
• Language: English
• Subjects: Radiocarbon; Single Stage AMS
• ISSN: 0168-583X; 1872-9584
• DOI: 10.1016/j.nimb.2022.10.006

•A single stage accelerator mass spectrometer at the Atmosphere and Ocean Research Institute, The University of Tokyo has been operated ca. 8000 h/year.•High throughput and high precision measurements using automated systems developed in-house.•Optimal precision of 0.1 percent. A single stage Accelerator Mass Spectrometer (National Electrostatic Corporation, YS-AMS) at the Atmosphere and Ocean Research Institute (AORI), University of Tokyo has operated smoothly since 2013. The average annual operation hours exceeded 8000 h/year for the last two years, allowing for measurement of up to 2912 samples/year (including standards). A newly developed in-house automated system increased the throughput dramatically, with a total of 16,000 samples measured to date. A 14C/12C measurement precision on standard material is better than 0.1 % due to and improved operation software system and an increased number of standards measured per run. Results have improved geochronological information for paleoenvironmental, biological, and geohazard studies.