**Table 1:** The projected range l_i and the stopping cross section S⁽¹⁾_i of protons ( $i={\rm p}$ ) and $\alpha$ -particles ( $i=\alpha$ ) with initial kinetic energy 1 keV/amu for silicate (MgFeSiO₄) and carbon.
	$l_{\rm p}$	$l_{\rm\alpha}$	$S^{(1)}_{\rm p}$	$S^{(1)}_{\rm\alpha}$
	[ $\mu$ m]	[ $\mu$ m]	[10^-15 eV cm²]	[10^-15 eV cm²]
Silicate	0.071	0.17	25^a	40^a
Carbon	0.067	0.14	3.0^b	5.9^c

References: ^a Ziegler (2002); ^b Møller et al. (2002); ^c Mikheev et al. (1993).

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