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Aging effect of non-evaporable getter coatings

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Abstract

Introduction

The pumping performance of getter materials has becoming one of the hotspots in accelerator field. The recovery of pumping performance after air venting, also called aging effect, is important for applications in accelerators.

Materials and methods

In this work, we investigated the aging effect of Ti–V–Zr–Hf- and Ti–V–Zr-coated copper tubular chambers, and the effect of initial air exposure time on the aging properties. The samples presented hierarchically micro/nano-structures and showed a featured aging curve, giving about 9 effective pumping cycles.

Conclusion

The pumping performance is inversely correlated with air exposure time suggesting that the getter coated chambers should be properly preserved before applied as a “pump”.

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Acknowledgements

This work is supported by High Energy Photon Source (HEPS), a major national science and technology infrastructure.

Funding

The funding was provided by National Development and Reform Commission (Grant No. 发改高技(2017)2173号).

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Authors and Affiliations

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China

    Yuchen Yang, Yongsheng Ma, Shuangkai Chen, Tiezhu Qi, Xiaohua Peng, Haiyi Dong & Ping He

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Yongsheng Ma

Authors
  1. Yuchen Yang
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  2. Yongsheng Ma
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  3. Shuangkai Chen
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  4. Tiezhu Qi
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  5. Xiaohua Peng
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  6. Haiyi Dong
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  7. Ping He
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Corresponding author

Correspondence to Yuchen Yang.

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Cite this article

Yang, Y., Ma, Y., Chen, S. et al. Aging effect of non-evaporable getter coatings. Radiat Detect Technol Methods 4, 372–376 (2020). https://doi.org/10.1007/s41605-020-00193-x

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  • DOI: https://doi.org/10.1007/s41605-020-00193-x

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