Reduced ionization coefficients in low-current dc discharge in freons of a new generation Jelena Marjanović, Dragana Marić and Zoran Lj. Petrović Eur. Phys. J. D, 78 2 (2024) 14 Published online: 04 February 2024 DOI: 10.1140/epjd/s10053-024-00808-8