Investigation of optical emission in binary low energy Ne-Ne collisions Kurskov S.Yu., Petrov Yu.B., Safronov Yu.A. Petrozavodsk State University, Petrozavodsk, Russia In this work we report the results of the experimental research of the dependence of the emission cross sections in Ne I series on main quantum number at fixed collision energy. The cross sections for transitions between Ne(2p5 3s) and Ne(2p5 np) states (3<=n<=8) at 450 eV collision energy (c.m.) are presented.