\begin{document}$ ^{40,48} $\end{document}Ca and \begin{document}$ ^{58,64} $\end{document}Ni + \begin{document}$ ^{9} $\end{document}Be at 140 MeV per nucleon. We evaluate α and β values and sort them as a function of the neutron excess \begin{document}$ I \equiv N-Z $\end{document}. The significant differences in α extracted from fragments within different ranges of I emphasize the importance of understanding the dependence of isoscaling parameters on fragments generated in various collision regions. Furthermore, the \begin{document}$ |\beta(N)| / \alpha(Z) $\end{document} value for a specific fragment in small size and highly isospin asymmetry systems can serve as a probe to detect the variations in neutron density and proton density in different regions of the nucleus and indicate the limitations of theoretical models in investigating these issues."> Isoscaling properties for neutron-rich fragments in highly asymmetric heavy ion collision systems -
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