Effect of liquid to gas density ratio on primary breakup of a spray from a pressure swirl atomizerKeerthi Santhosh Kumar, Edin Micheal, Krishna Kant and R. BanerjeeEur. Phys. J. Spec. Top., 234 23 (2026) 6917-6936DOI: https://doi.org/10.1140/epjs/s11734-025-01811-9