“…Medhat, 2011;Yalçın et al, 2012;Singh and Badiger, 2012;Kucuk et al, 2013). Although there have been studies about Z eff and N el values or similar parameters of some extraterrestrial materials in the literature (Moreira and Appoloni, 2006;Kurudirek et al, 2011;Un and Sahin, 2012), there has been no study on determination of Z eff and N el values for Comet Wild-2 samples. The results presented in this study are novel and as they may be helpful to better understand the Comet Wild-2, they may also be provide beneficial information about ourSolar System.…”