36Cl preparation method for Chinese Karst samples (Tiankeng)

Shen, Hongtao; Sasa, Kimikazu; Meng, Qi; Matsumura, Masatoshi; Matsunaka, Tetsuya; Hosoya, Seiji; Takahashi, Tsutomu; Honda, Maki; Sueki, Keisuke; Chen, Lisha; Lu, Huijin; He, Ming; Baojian, Huang; Qin, Yongfu; Li, Jiahao; Lan, Haihui; Li, Zhaomei; Zhao, Zhenchi; Liu, Mingji; Wei, Siyu; Qi, Mingli; Zhao, Qian; Dong, Kejun; Guan, Yongjin; Jiang, Shan

doi:10.1016/j.nimb.2019.07.032

Cited by 3 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, 90 μl of 0.3 M AgNO 3 was added to the merged chlorine fraction. The sulfur was removed by adding Ba(NO 3 ) 2 as described in Shen et al (2019), but without removing the excess barium. After the sulfur reduction, AgCl was precipitated by adding 1 ml of 13 M HNO 3 .…”

Section: Methodsmentioning

confidence: 99%

High‐Resolution ¹⁰Be and ³⁶Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

et al. 2021

View full text Add to dashboard Cite

Cosmogenic nuclides are an excellent proxy of reconstructing the past solar activity. These nuclides are produced in the Earth's atmosphere by nuclear cascade initiated by galactic cosmic ray (GCR) particles, which mainly consist of protons and helium nuclei. As the GCR intensity on Earth is modulated by activity of the solar magnetic field, the past production rate of the cosmogenic nuclides reflects the solar activity at that time (e.g., Beer et al., 2012). To reconstruct the variations of past solar activity, researchers measure the cosmogenic nuclides stored in archived samples, such as 14 C in tree rings and 10 Be in polar ice cores (e.g.,

show abstract

Section: Methodsmentioning

confidence: 99%

High‐Resolution ¹⁰Be and ³⁶Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Radiocarbon measurements were performed at the 6MV AMS facility at the University of Tsukuba (UTTAC) (Sasa et al 2015;Shen et al 2019aShen et al , 2019b. The 14 C/C values were determined by simultaneous measurements of 13 C 4 and 12 C 4 current by the offset Faraday cup on the high energy side and the count rate of 14 C on the multianode detector.…”

Section: C-ams Measurement At Uttacmentioning

confidence: 99%

Radiocarbon dating of Chinese Ancient Tea Trees

et al. 2019

Self Cite

View full text Add to dashboard Cite

The jungles of Linyun and Longlin Autonomous Prefecture, located in the heart of the southwestern Guangxi Zhuang Autonomous Region of China, are home to the oldest tea trees (Camellia sinensis) in the world. In the absence of regular annual rings, radiocarbon (14C) dating is one of the most powerful tools that can assist in the determination of the ages and growth rates of these plants. In this work, cores were extracted from large ancient tea trees in a central Longlin rain forest; extraction of carbon was performed with an automated sample preparation system. The 14C levels in the tree cores were measured using accelerator mass spectrometry (AMS) at the University of Tsukuba. These measurements indicated that contrary to conventional views, the ages of trees in these forests range up to ~700 years, and the growth rate of this species is notably slow, exhibiting a long-term radial growth rate of 0.039±0.006 cm/yr. It was demonstrated that 14C analyses provide accurate determination of ages and growth rates for subtropical wild tea trees.

show abstract

Radiocarbon and Tritium Measurements at the Gxnu-Ams Facility

et al. 2023

View full text Add to dashboard Cite

A single-stage accelerator mass spectrometer (GXNU-AMS) developed for radiocarbon and tritium measurements was installed and commissioned at Guangxi Normal University in 2017. After several years of operational and methodological upgrades, its performance has been continuously improved and applied in multidisciplinary fields. Currently, the measurement sensitivity for radiocarbon and tritium is 14C/12C ∼ (3.14 ± 0.05) ×10–15 and 3H/1H ∼ (1.23 ± 0.17)×10–16, respectively, and the measurement accuracy is ∼0.6%, which can meet the measurement requirements in the nuclear, earth, environmental and life science fields. This study presents the performance characteristics of GXNU-AMS and several interesting application studies.

show abstract

36Cl preparation method for Chinese Karst samples (Tiankeng)

Cited by 3 publications

References 11 publications

High‐Resolution ¹⁰Be and ³⁶Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

High‐Resolution ¹⁰Be and ³⁶Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

Radiocarbon dating of Chinese Ancient Tea Trees

Radiocarbon and Tritium Measurements at the Gxnu-Ams Facility

Contact Info

Product

Resources

About

36Cl preparation method for Chinese Karst samples (Tiankeng)

Cited by 3 publications

References 11 publications

High‐Resolution 10Be and 36Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

High‐Resolution 10Be and 36Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

Radiocarbon dating of Chinese Ancient Tea Trees

Radiocarbon and Tritium Measurements at the Gxnu-Ams Facility

Contact Info

Product

Resources

About

High‐Resolution ¹⁰Be and ³⁶Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?

High‐Resolution ¹⁰Be and ³⁶Cl Data From the Antarctic Dome Fuji Ice Core (∼100 Years Around 5480 BCE): An Unusual Grand Solar Minimum Occurrence?