36Cl preparation method for Chinese Karst samples (Tiankeng)

被引：5

作者：

Shen, Hongtao ^{[1
,2
,3
,4
]}

Sasa, Kimikazu ^{[2
]}

Meng, Qi ^{[1
,3
,4
]}

Matsumura, Masumi ^{[2
]}

Matsunaka, Tetsuya ^{[2
]}

Hosoya, Seiji ^{[2
]}

Takahashi, Tsutomu ^{[2
]}

Honda, Maki ^{[2
]}

Sueki, Keisuke ^{[2
]}

Chen, Lisha ^{[1
,3
]}

Lu, Huijin ^{[1
,3
]}

He, Ming ^{[4
]}

Huang, Baojian ^{[5
]}

Qin, Yongfu ^{[1
]}

Li, Jiahao ^{[1
,3
]}

Lan, Haihui ^{[1
,3
]}

Li, Zhaomei ^{[1
,3
]}

Zhao, Zhenchi ^{[1
,3
]}

Liu, Mingji ^{[1
,3
]}

Wei, Siyu ^{[1
,3
]}

Qi, Mingli ^{[1
,3
]}

Zhao, Qingzhang ^{[4
]}

Dong, Kejun ^{[6
]}

Guan, Yongjin ^{[7
]}

Jiang, Shan ^{[4
]}

机构：

[1] Guangxi Normal Univ, Coll Phys, Guilin 541004, Peoples R China

[2] Univ Tsukuba, Tsukuba, Ibaraki 3058577, Japan

[3] Guangxi Normal Univ, Guangxi Key Lab Nucl Phys & Nucl Technol, Guilin 541004, Peoples R China

[4] China Inst Atom Energy, POB 275,50, Beijing 102413, Peoples R China

[5] Chinese Acad Geol Sci, Inst Karst Geol, Guilin 541004, Peoples R China

[6] Tianjin Univ, Tianjin 300072, Peoples R China

[7] Guangxi Univ, Coll Phys, Nanning 530004, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2019年 / 458卷

关键词：

AMS; Cl-36; Tiankeng; Sample preparation; COSMOGENIC CL-36; ISOTOPE-DILUTION; RATES;

D O I：

10.1016/j.nimb.2019.07.032

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Tiankeng, a typical Karst relief of the Late Quaternary Period, in the south of China, plays an important role when researching the surface shape and evolution of the Karst relief. The accumulation of Chlorine-36 (T-1/2 = 301 ka) through the interaction of cosmic ray particles with Ca, K and Cl in rocks allow it to be used as the ideal nuclide for determination of the exposure age and erosion rate of limestone. In this work, an improved Cl-36 sample preparation method for Tiankeng limestone was presented. The Isotope Dilution-AMS technique allows for the simultaneous measurement of Cl-36 and Cl with a single AMS sample preparation. The barium introduced during the sample preparation was removed to avoid ionizer poisoning and attain a higher and more stable beam current. The method is particularly suitable for limestone samples, as well as for soil, sediment and water samples.

引用

页码：126 / 129

页数：4

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