The work accomplished during the course of this contract resulted in the successful completion of all the established program milestones. Specifi¬cally these milestones include: (1) The development of cold-cathode processing techniques, which resulted in activation to emission levels of 90uA beam current, which corresponds to about 4 A/cm beam current density. (2) Development of cathode transfer and tube seal technology which resulted in three successful transfers and seals out of three tries. (3) Fabrication of a functional cold-cathode tube from which emission velocity distribution measurements were made. (4) Fabrication of a hot-cathode tube from which emission velocity distribution measurements were made. (5) Development of emission velocity measurement instrumentation and the completion of tests.
展开▼
