Studies of corona and back discharges in carbon dioxide Tadeusz Czech, Arkadiusz Tomasz Sobczyk, Anatol Jaworek, Andrzej Krupa and Eryk Rajch Eur. Phys. J. D, 67 1 (2013) 23 Published online: 05 February 2013 DOI: 10.1140/epjd/e2012-30572-7