@article{el- khabeary_2010,  title={Study of the parameters affecting ion beam emerging from cold conical cathode ion source},  volume={40},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332010000300013},  DOI={10.1590/S0103-97332010000300013},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={El- Khabeary, H.},  year={2010},  month={Sep},  pages={327–332} }