Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Possible overestimation of isomer depletion due to contamination

Matters Arising to this article was published on 02 June 2021

The Original Article was published on 08 February 2018

This is a preview of subscription content, access via your institution

Access options

Rent or buy this article

Prices vary by article type



Prices may be subject to local taxes which are calculated during checkout

Fig. 1: Experimental setup and estimated cross-section of 93Mo as a function of bombarding energy.
Fig. 2: Re-examination of k ratios.


  1. Chiara, C. J. et al. Isomer depletion as experimental evidence of nuclear excitation by electron capture. Nature 554, 216–218 (2018).

    Article  ADS  CAS  Google Scholar 

  2. Wu, Y., Keitel, C. H. & Palffy, A. 93mMo isomer depletion via beam-based nuclear excitation by electron capture. Phys. Rev. Lett. 122, 212501 (2019).

    Article  ADS  CAS  Google Scholar 

  3. Tarasov, O. B. & Bazin, D. Development of the LISE: application to fusion-evaporation. Nucl. Instrum. Methods B 204, 174–178 (2003).

    Article  ADS  CAS  Google Scholar 

  4. Fukuchi, T. et al. High-spin isomer in 93Mo. Eur. Phys. J. A 24, 249–257 (2005).

    Article  ADS  CAS  Google Scholar 

  5. Sun, Z. Y. et al. RIBLL, the radioactive ion beam line in Lanzhou. Nucl. Instrum. Methods A 503, 496–503 (2003).

    Article  ADS  CAS  Google Scholar 

  6. Xia, J. W. et al. The heavy ion cooler-storage-ring project (HIRFL-CSR) at Lanzhou. Nucl. Instrum. Methods A 488, 11–25 (2003).

    Article  ADS  Google Scholar 

Download references


This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (grant number XDB34010000) and the National Natural Science Foundation of China, under contracts U1832134 and U1932137.

Author information

Authors and Affiliations



S.G conceived the idea and wrote the first draft. Y.F., X.Z. and C.M.P edited and revised the manuscript.

Corresponding author

Correspondence to Xiaohong Zhou.

Ethics declarations

Competing interests

The authors declare no competing interests.

Additional information

Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and Permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Guo, S., Fang, Y., Zhou, X. et al. Possible overestimation of isomer depletion due to contamination. Nature 594, E1–E2 (2021).

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI:

This article is cited by


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing