M Type Cathode Life Tests for Space TWTs

摘要：

BVERI evaluated the M cathodes lifetime in 40 diodes and 18 electron guns (including 2 TWTs) in DC mode under the conditions of temperature acceleration and current density acceleration. The total accumulate time of 40 diodes and 18 electron guns (including 2 TWTs) were more than 681000 hours and 275000 hours separately. Based on the tiny change of cathode surface work function, the authors present the primary life model of the M cathode, which shows that the life of 612M cathode operating at 999 ℃b are 331936 hours (37.9 years) at the current density of 1.OA/cm2 and 254374 hours (29.0 years) at the current density of 2A/cm2.

作者: CHENG Cheng LI Ji YU Zhiqiang WANG Hui

作者单位: Beijing Vacuum Electronics Research Institute, Beijing, 100015, China

会议类型: 国际会议

会议名称: 2010 8th International Vacuum Electron Sources Conference and NANOcarbon(第八届真空电子源和纳米碳国际会议)

会议地点: 南京

会议语种:英文

页码: 27-28

在线出版日期: 2010-10-14（万方平台首次上网日期，不代表论文的发表时间）