\begin{document}$N=Z$\end{document} nuclei \begin{document}$^{36}$\end{document}Ar, \begin{document}$^{34}$\end{document}Cl, \begin{document}$^{32}$\end{document}S, \begin{document}$^{30}$\end{document}P, and \begin{document}$^{28}$\end{document}Si on a carbon target were measured at approximately 300 MeV/nucleon using the RIBLL2 fragment separator at HIRFL. Among these, the cross sections for \begin{document}$^{34}$\end{document}Cl and \begin{document}$^{30}$\end{document}P are reported here for the first time, providing new data and extending EFCS measurements along the \begin{document}$N=Z$\end{document} chain. The measured cross sections exhibit significant odd-even staggering as a function of the charge change \begin{document}$\Delta Z$\end{document}. The experimental results are compared with several empirical parametrizations, including Cummings, EPAX3, and FRACS, as well as with the isospin-dependent quantum molecular dynamics model (IQMD) coupled to the statistical decay code GEMINI. The IQMD+GEMINI calculations reproduce the experimental cross sections with an accuracy of approximately 7% and reasonably reproduce the observed odd-even staggering. Consistent with previous studies, comparisons of model predictions at different reaction stages demonstrate that the odd-even staggering in EFCSs predominantly originates from the de-excitation of excited primary fragments. These results further establish the robustness of this interpretation by extending its validity to the \begin{document}$N=Z$\end{document} region."> Systematic study of odd-even staggering in elemental fragmentation cross sections for <i>N</i>=<i>Z</i> nuclei from <sup>36</sup>Ar to <sup>28</sup>Si at ~ 300 MeV/nucleon -
  • [1]

    H. Geissel, P. Armbruster, K. H. Behret al., Nucl. Instrum. Meth. B70, 286 (1992)

  • [2]

    B. H. Sun, Chin. Sci. Bull.65, 3886 (2020)

  • [3]

    X. D. Xu, Y. Zheng, Z. Y. Sunet al., Sci. Bull.70, 1026 (2025)

  • [4]

    T. Kubo, Nucl. Instrum. Meth. B204, 97 (2003)

  • [5]

    C. N. Knott, S. Albergo, Z. Cacciaet al., Phys. Rev. C53, 347 (1996)

  • [6]

    J. Su, F. S. Zhang, and B. A. Bian, Phys. Rev. C83, 014608 (2011)

  • [7]

    M. V. Ricciardi, A. V. Ignatyuk, A. Kelićandet al., Nucl. Phys. A733, 299 (2004)

  • [8]

    J. X. Cheng, J. L. Tian, and D. H. Zhang, J. Phys. G: Nucl. Part. Phys.42, 015102 (2014)

  • [9]

    W. R. Webber, J. C. Kish, and D. A. Schrier, Phys. Rev. C41, 533 (1990)

  • [10]

    C. Zeitlin, A. Fukumura, L. Helibronnet al., Phys. Rev. C64, 024902 (2001)

  • [11]

    C. Zeitlin, S. Guetersloh, L. Helibronnet al., Phys. Rev. C76, 014911 (2007)

  • [12]

    C. Zeitlin, S. Guetersloh, L. Heilbronnet al., Phys. Rev. C77, 034605 (2008)

  • [13]

    K. Sawahata, A. Ozawa, Y. Saitoet al., Nucl. Phys. A961, 142 (2017)

  • [14]

    G. S. Li, J. Su, B. H. Sunet al., Phys. Rev. C107, 024609 (2023)

  • [15]

    S. Yamaki, T. Yamaguchi, J. Kounoet al., Nucl. Instrum. Meth. B317, 774 (2013)

  • [16]

    X. L. Wei, G. S. Li, and J. Su, Phys. Rev. C112, 064604 (2025)

  • [17]

    J. R. Cummings, W. R. Binns, T. L. Garrardet al., Phys. Rev. C42, 2530 (1990)

  • [18]

    B. S. Nilsen, C. J. Waddington, J. R. Cummingset al., Phys. Rev. C52, 3277 (1995)

  • [19]

    K. Sümmerer, W. Brüchle, D. J. Morrisseyet al., Phys. Rev. C42, 2546 (1990)

  • [20]

    K. Sümmerer and B. Blank, Phys. Rev. C61, 034607 (2000)

  • [21]

    K. Sümmerer, Phys. Rev. C86, 014601 (2012)

  • [22]

    C. Hartnack, Z. X. Li, L. Neiseet al., Nucl. Phys. A495, 303 (1989)

  • [23]

    N. Wang, Z. X. Li, and X. Z. Wu, Phys. Rev. C65, 064608 (2002)

  • [24]

    H. Sorge, H. Stöcker, and W. Greiner, Nucl. Phys. A498, 567 (1989)

  • [25]

    R. J. Charity, M. A. McMahan, G. J. Wozniakotherset al., Nucl. Phys. A483, 371 (1988)

  • [26]

    G.-S. Li, B. H. Sun, J. Suet al., Phys. Lett. B859, 139143 (2024)

  • [27]

    J. W. Xia, W. L. Zhan, B. W. Weiet al., Nucl. Instrum. Meth. A488, 11 (2002)

  • [28]

    X. Zhang, R. J. Hu, C. G. Luet al., Nucl. Phys. Rev.34, 290 (2017)

  • [29]

    X. H. Zhang, S. W. Tang, P. Maet al., Nucl. Instrum. Meth. A795, 389 (2015)

  • [30]

    J. W. Zhao and B. H. Sun, Nucl. Phys. Rev.35, 362 (2018)

  • [31]

    F. Fang, S. W. Tang, S. T. Wanget al., Nucl. Phys. Rev.39, 65 (2022)

  • [32]

    J. W. Zhao, B. H. Sun, I. Tanihataet al., Nucl. Instrum. Meth. A823, 41 (2016)

  • [33]

    W. J. Lin, J. W. Zhao, B. H. Sunet al., Chin. Phys. C41, 066001 (2017)

  • [34]

    C. J. Wang, G. Guo, H. J. Onget al., Chin. Phys. C47, 084001 (2023)

  • [35]

    T. Yamaguchi, S. Fukuda, G. W. Fanet al., Phys. Rev. C82, 014609 (2010)

  • [36]

    B. Mei, Phys. Rev. C95, 034608 (2017)

  • [37]

    J. Su and C. C. Guo, Phys. Rev. C97, 054604 (2018)

  • [38]

    G. Iancu, F. Flesch, and W. Heinrich, Radiat. Meas.39, 525 (2005)

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