%0 Journal Article %A Sergei V. Smolin %T Definition of lifetime due to wave-particle interactions for the pitch angle of 90 degrees %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2023 %P 340-347 %V 16 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2023_16_3_a5/ %G en %F JSFU_2023_16_3_a5