V.S. Polyakov - Head of Laboratory, JSC «Pluton» (Moscow), Post-graduate Student, MATI-RSUAT (Moscow). E-mail: p_vs@list.ru
A.D. Silaev - Head of Laboratory, JSC «Pluton» (Moscow), Post-graduate Student, MATI-RSUAT (Moscow). E-mail: silaev_ad@mail.ru
N.E. Ledentсova - Engineer, JSC «Pluton» (Moscow), Post-graduate Student, MIEM NRU HSE (Moscow). E-mail: nekharitonova@mail.ru
I.P. Lee - Ph. D. (Eng.), Head of Department, JSC «Pluton» (Moscow). E-mail: ork@pluton.msk.ru
А.А. Lozovan - Dr. Sc. (Eng.), Professor, Head of Department, MATI-RSUAT (Moscow). E-mail: loz-plasma@yandex.ru

The most popular electrovacuum oscillators in recent years are magnetrons with selfheated startup. These devices generate such intense interest primarily because of practically instantaneous startup time (0.5 sec). However, this cathode pack construction is hard applicable in millimetric wave magnetrons because of close clearance between the anode and cathode, high degree of back ion and electron bombardment and also high concentrated electric-field intensity in interaction space. In this context, during the creation of cathodes for short millimetric wave magnetrons it is instructive to use methods of atomic-molecular engineering. It is rather interesting to study the possibility of field-emission and secondary-emission cathodes function combining in one cathode. For which purpose a feasibility of creating a multipoint field-emission structure on the surface of a Pd-Ba alloy cathode by the way of 7 keV argon ion irradiation of the surface was considered in this work. In course of the studies it was found that Ar+ ion bombardment of the surface of a pressed Pd−Ba alloy emitter results in the formation of chaotically spread microcone-formed microrelief. The cones growth and area on the target surface increase if the feed angle variates. Also during the research of creation of cathodes for non-incandescent millimetric wave magnetrons it was observed that such class devices needed cathodes with closer packing of particles of emission-active body and higher uniformity of emission emitted current density. The solution of the problem is possible if using cathodes made by vacuum evaporation in manufacturing. In connection with it Рd−Ва cathodes depositing by magnetron and ion-beam sputtering methods was studied in this work. The research results show that microstructures of the surfaces of Pd−Ba coatings made by both methods are similar and have high palladium and barium uniformity. However, the ion-beam sputtered coating contained much more Ва that amounted 12%.