Calculated X-ray emission produced by LECR ions with the spectral parameters s = 1.9, E_min = 10 MeV nucleon^-1, and the escape path length Λ = 5 × 10²⁴ cm^-2, interacting in a gas cloud of metallicity Z = 1.7   Z_⊙ (as obtained in Sect. 5). In panel a) the abundances of the accelerated heavy ions are in solar proportion, but with a metallicity enhancement factor relative to the solar system (SS) composition (see text) f_met = 1 (dashed curve) and f_met = 10 (solid and dotted curves). Panel b) same but for the CRS composition (see text). The dotted curves show the effect of photoelectric absorption on the X-ray spectra for a H column density of 10²³ cm^-2.