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Detection of helium in irradiated Fe9Cr alloys by coincidence Doppler broadening of slow positron annihilation

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Abstract

An element analysis method, coincidence Doppler broadening spectroscopy of slow positron annihilation, was employed to detect helium in ion-irradiated Fe9Cr alloys. Spectra with higher peak to background ratio were recorded using a two-HPGe detector coincidence measuring system. It means that information in the high-momentum area of the spectra can be used to identify helium in metals. This identification is not entirely dependent on the helium concentration in the specimens, but is related to the structure and microscopic arrangement of atoms surrounding the positron annihilation site. The results of Doppler broadening spectroscopy and transmission electron microscopy show that vacancies and dislocations were formed in ion-irradiated specimens. Thermal helium desorption spectrometry was performed to obtain the types of He traps.

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References

  1. L.K. Mansur, W.A. Coghlan, Mechanisms of helium interaction with radiation effects in metals and alloys: a review. J. Nucl. Mater. 119(1), 1–25 (1983)

    Article  ADS  Google Scholar 

  2. K. Niwase, T. Ezawa, T. Tanabe, Dislocation loops and their depth profiles in He+ and D+ ion irradiated nickel. J. Nucl. Mater. 203(1), 56–66 (1993)

    Article  ADS  Google Scholar 

  3. K. Arakawa, R. Imamura, K. Ohota, Evolution of point defect clusters in pure iron under low-energy He+ irradiation. J. Appl. Phys 89(9), 4752–4757 (2001)

    Article  ADS  Google Scholar 

  4. T. Zhu, X.Z. Cao, S.X. Jin, J.P. Wu, Helium retention and thermal desorption from defects in Fe9Cr binary alloys. J. Nucl. Mater. 466, 522–525 (2015)

    Article  ADS  Google Scholar 

  5. R.S. Blewer, Depth distribution of implanted helium and other low-z elements in metal films using proton backscattering. Appl. Phys. Lett. 23, 593–595 (1973)

    Article  ADS  Google Scholar 

  6. T. Zhu, S. Jin, L. Guo, Y. Hu, E. Lu, J. Wu, B. Wang, L. Wei, X. Cao, Helium/hydrogen synergistic effect in reduced activation ferritic/martensitic steel investigated by slow positron beam. Philos. Mag 96(3), 253–260 (2016)

    Article  ADS  Google Scholar 

  7. K.G. Lynn, A.N. Goland, Observation of high momentum tails of positron-annihilation lineshapes. Solid State Commun. 18, 1549–1552 (1976)

    Article  ADS  Google Scholar 

  8. P. Asoka-Kumar, M. Alatalo, V.J. Ghosh, Increased elemental specificity of positron annihilation spectra. Phys. Rev. Lett. 77, 2097–2100 (1996)

    Article  ADS  Google Scholar 

  9. Q. Xu, T. Yoshiie, K. Sato, Dose dependence of Cu precipitate formation in Fe–Cu model alloys irradiated with fission neutrons. Phys. Rev. B 73, 134115 (2006)

    Article  ADS  Google Scholar 

  10. Y. Nagai, T. Honma, Z. Tang, K. Hono, M. Hasegawa, Coincidence Doppler broadening study of the pre-precipitation stage of an Al[sbnd]Cu[sbnd]Mg[sbnd]Ag alloy. Philos. Mag. A 82, 1559–1572 (2002)

    Article  ADS  Google Scholar 

  11. C. Hugenschmidt, P. Pikart, M. Stadlbauer, K. Schreckenbach, High elemental selectivity to Sn submonolayers embedded in Al using positron annihilation spectroscopy. Phys. Rev. B 77, 092105 (2008)

    Article  ADS  Google Scholar 

  12. M. Alatalo, H. Kauppinen, K. Saarinen, Identification of vacancy defects in compound semiconductors by core-electron annihilation: application to InP. Phys. Rev. B 51, 4176–4185 (1995)

    Article  ADS  Google Scholar 

  13. U. Myler, R.D. Goldberg, A.P. Knights, Chemical information in positron annihilation spectra. Appl. Phys. Lett. 69(22), 3333–3335 (1996)

    Article  ADS  Google Scholar 

  14. J.P. Biersack, L.G. Haggmark, A Monte Carlo computer program for the transport of energetic ions in amorphous targets. Nucl. Instrum. Methods 174: 257–269 (1980).

    Article  ADS  Google Scholar 

  15. I. Carvalho, H. Schut, A. Fedorov, Helium implanted Eurofer97 characterized by positron beam Doppler broadening and thermal desorption spectroscopy. J. Nucl. Mater. 442, 377–381 (2013)

    Article  ADS  Google Scholar 

  16. V. Sabelova, V. Krsjak, J. Kuriplach, Characterization of helium implanted Fe–Cr alloys by means of positron annihilation methods. J. Nucl. Mater. 450, 54–58 (2014)

    Article  Google Scholar 

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Acknowledgements

All authors acknowledge support from the National Natural Science Foundation of China; Grant Nos. 11475193, 11505205 and 11505192.

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Authors and Affiliations

  1. Multi-discipline Research Center, Institute of High Energy Physics, CAS, Beijing, 100049, China

    Xingzhong Cao, Te Zhu, Shuoxue Jin, Peng Kuang, Peng Zhang, Eryang Lu, Yihao Gong & Baoyi Wang

  2. School of Physical sciences, University of Chinese Academy of Sciences, Beijing, 100039, China

    Te Zhu & Baoyi Wang

  3. School of Physics and Technology, Wuhan University, Wuhan, 430072, China

    Liping Guo

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  1. Xingzhong Cao
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  2. Te Zhu
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  3. Shuoxue Jin
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  4. Peng Kuang
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  5. Peng Zhang
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  6. Eryang Lu
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  7. Yihao Gong
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  8. Liping Guo
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  9. Baoyi Wang
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Correspondence to Xingzhong Cao or Baoyi Wang.

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Cao, X., Zhu, T., Jin, S. et al. Detection of helium in irradiated Fe9Cr alloys by coincidence Doppler broadening of slow positron annihilation. Appl. Phys. A 123, 177 (2017). https://doi.org/10.1007/s00339-017-0827-3

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