Directly heated cathode performance testing device

The utility model provides a directly heated cathode performance testing device, includes and fixes high vacuum connection, getter device, electron bombardment source, banded negative pole, molybdenumsheet positive pole in conductive core pole upper end respectively through many fixed molybdenum rod, it is fixed that electron bombardment source and molybdenum sheet positive pole are upper and lower laminated structure, and banded negative pole is arranged in between electron bombardment source and the molybdenum sheet positive pole, banded negative pole includes tungsten area and emitter, andthe emitter is arranged in the tungsten area on the surface by the sintering, is the ba that emissivities are stronger drawn together to the electron bombardment source packet W negative pole and heater subassembly. This testing arrangement has easy operation, weak point consuming time, advantage such as low price moreover. 种直热式阴极综合性能测试装置，包括经多根固定钼杆分别固定在导电芯柱上端的高真空接口、吸气剂装置、电子轰击源、带状阴极、钼片阳极，所述电子轰击源和钼片阳极为上下叠层结构固定，带状阴极置于电子轰击源和钼