Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session Z09: New Methods and Applications in Precision Measurements
10:30 AM–12:30 PM,
Friday, June 3, 2022
Room: Salon 11/12
Chair: Derek Jackson Kimball, California State University - East Bay
Abstract: Z09.00008 : Improvements on Atom Trap Trace Analysis of 39Ar
11:54 AM–12:06 PM
Presenter:
yanqing Chu
(University of Science and Technology of China, Hefei, China)
Authors:
yanqing Chu
(University of Science and Technology of China, Hefei, China)
Amin Tong
(University of Science and Technology of China, Hefei, China)
Jiqiang Gu
(University of Science and Technology of China, Hefei, China)
Xize Dong
(University of Science and Technology of China, Hefei, China)
Shuiming Hu
(University of Science and Technology of China, Hefei, China)
Weikang Hu
(University of Science and Technology of China, Hefei, China)
Zehua Jia
(Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China)
Wei jiang
(University of Science and Technology of China, Hefei, China)
Zhengtian Lu
(University of Science and Technology of China, Hefei, China)
Florian Ritterbusch
(University of Science and Technology of China, Hefei, China)
Liangting Sun
(Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China)
Zhaofeng Wan
(University of Science and Technology of China, Hefei, China)
Guoming Yang
(University of Science and Technology of China, Hefei, China)
We report on the latest advances of 39Ar analysis using ATTA, including increased 39Ar detection efficiency and a reduced 39Ar background, resulting in a two-fold increase in the upper age limit of 39Ar dating. Moreover, we have developed a 39Ar pre-enrichment system based on mass spectrometric techniques and obtain 39Ar count rates up to 1000 atoms/h, two orders of magnitude higher than in previous efforts. This allows for a considerably higher sample throughput, which is particularly crucial for large scale surveys of global ocean circulations. Thanks to the progress in 39Ar analysis, the full potential of radioargon dating over a wide timescale can now be exploited in groundwater, ocean water and glacier ice.
http://atta.ustc.edu.cn/en-us/events/attaprimer.html
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