eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-06-22 12 Spl.Edn.2 671 675 10.13005/bbra/2247 13586 article Muhabbat Abdisattarovna Khizirova 1 Patam Turganovna Akhmetova 1 Zukhra Kadesovna Bittileyova 1 Bayan Ermakhametovna Tolymbekova 1 Dinara Tanashbekovna Aldekeyeva 1 Kazakh Academy of Transport and Communication Named After M.Tynyshpayev Kazakhstan, 050012, Almaty, Shevchenko 97 In this article we consider the possibility of using a single lens to modulate the speed of the electron beam. It is shown that the use of a single lens as a modulator in speed does not affect the value of the coefficient of interaction with the electron flux field lens. https://www.biotech-asia.org/vol12_nospl_edn2/cavity-resonator-with-electrostatic-focusing/ Modulation; lens; electron beam