西安脉冲堆（XAPR）辐照<sup>40</sup>Ar/<sup>39</sup>Ar定年样品条件探究

石雅静; 刘汉彬; 李军杰; 张佳; 金贵善; 韩娟; 张建锋; 石晓; 张万峰; 石佳

doi:10.3799/dqkx.2024.066

Volume 50 Issue 1

Jan. 2025

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Article Navigation > Earth Science > 2025 > 50(1): 88-96

Shi Yajing, Liu Hanbin, Li Junjie, Zhang Jia, Jin Guishan, Han Juan, Zhang Jianfeng, Shi Xiao, Zhang Wanfeng, Shi Jia, 2025. Research of Xi'an Pulsed Reactor (XAPR) for Irradiation Conditions of 40Ar/39Ar Dating Sample. Earth Science, 50(1): 88-96. doi: 10.3799/dqkx.2024.066

Citation:

Shi Yajing, Liu Hanbin, Li Junjie, Zhang Jia, Jin Guishan, Han Juan, Zhang Jianfeng, Shi Xiao, Zhang Wanfeng, Shi Jia, 2025. Research of Xi'an Pulsed Reactor (XAPR) for Irradiation Conditions of ⁴⁰Ar/³⁹Ar Dating Sample. Earth Science, 50(1): 88-96. doi: 10.3799/dqkx.2024.066

Citation:

Shi Yajing, Liu Hanbin, Li Junjie, Zhang Jia, Jin Guishan, Han Juan, Zhang Jianfeng, Shi Xiao, Zhang Wanfeng, Shi Jia, 2025. Research of Xi'an Pulsed Reactor (XAPR) for Irradiation Conditions of ⁴⁰Ar/³⁹Ar Dating Sample. Earth Science, 50(1): 88-96. doi: 10.3799/dqkx.2024.066

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Research of Xi'an Pulsed Reactor (XAPR) for Irradiation Conditions of ⁴⁰Ar/³⁹Ar Dating Sample

doi: 10.3799/dqkx.2024.066

1.
Beijing Research Institute of Uranium Geology, Beijing 100029, China
2.
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
3.
Wuhan Second Ship Design and Research Institute, Wuhan 430010, China

Received Date: 2023-12-06
Available Online: 2025-02-10
Publish Date: 2025-01-25

Abstract

Abstract

Domestic sample irradiation resources are limited, with few reactors available, infrequent reactor startups, and a lack of systematic research on the parameters for reactor irradiation samples. These limitations hinder the progress of scientific research in ⁴⁰Ar/³⁹Ar dating. Therefore, it is essential to develop new irradiation resources. For the first time, the irradiation conditions for ⁴⁰Ar/³⁹Ar dating samples in the Xi'an Pulsed Reactor (XAPR) were studied. The radial and axial gradient changes in neutron flux were determined using the biotite standard material ZBH-25, and the correction factors for side reactions were obtained using potassium salt and calcium salt. The results indicate that the radial J value of the irradiation channel is 0.49%, and a peak neutron flux, suggesting that the sample is irradiated in the center of the reactor. The axial neutron flux gradient in the irradiation channel is 0.54% /cm, and the correction factors in the XAPR irradiation channel are (⁴⁰Ar/³⁹Ar)_K =0.002 082 6, (³⁹Ar/³⁷Ar)_Ca =0.000 776 92, (³⁶Ar/³⁷Ar)_Ca =0.000 299 98. The standard material ZBH-25 biotite was dated, confirming that the reactor meets the irradiation conditions for ⁴⁰Ar/³⁹Ar dating samples and can serve as a new irradiation source.
- Xi'an Pulsed Reactor,
- ⁴⁰Ar/³⁹Ar dating,
- irradiation condition,
- neutron fluence gradient,
- correction factor,
- geochemistry

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References(47)

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Research of Xi'an Pulsed Reactor (XAPR) for Irradiation Conditions of 40Ar/39Ar Dating Sample

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Research of Xi'an Pulsed Reactor (XAPR) for Irradiation Conditions of ⁴⁰Ar/³⁹Ar Dating Sample