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We investigate scaling rules for the ionization cross sections ofmulticharged ions on molecules of biological interest. The cross sections areobtained using a methodology presented in [Mendez et al. J. Phys B (2020)],which considers distorted-wave calculations for atomic targets combined with amolecular stoichiometric model. We examine ions with nuclear charges Z from +1to +8 impacting on five nucleobases -adenine, cytosine, guanine, thymine,uracil-, tetrahydrofuran, pyrimidine, and water. We investigate scaling rulesof the ionization cross section with the ion charge and the number of activeelectrons per molecule. Combining these two features, we define a scaling lawfor any ion and molecular target, which is valid in the intermediate to highenergy range, i.e., 0.2-5 MeV/amu for oxygen impact. Thus, the fortyion-molecule systems analyzed here can be merged into a single band. We confirmthe generality of our independent scaling law with several collisional systems.

Scaling rules for the ionization of biological molecules by highly charged ions