Miyamoto N, Okajima Y, Wada M
Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan.
Rev Sci Instrum. 2014 Feb;85(2):02A714. doi: 10.1063/1.4830356.
Argon ion beam fluctuation from an AC filament driven Bernas-type ion source is observed. The ion beam was measured by an 8 measurement elements beam profile monitor. The amplitude of the beam current fluctuation stayed in the same level from 100 Hz to 1 kHz of the filament heating frequency. The beam current fluctuation frequency measured by the beam profile monitor was equal to the frequency of the AC filament operation. The fluctuation amplitudes of the beam current by AC operation were less than 7% and were in the same level of the DC operation.
观察到由交流灯丝驱动的伯纳斯型离子源产生的氩离子束波动。离子束由一个具有8个测量元件的束流轮廓监测器进行测量。在灯丝加热频率从100Hz到1kHz的范围内，束流波动的幅度保持在同一水平。由束流轮廓监测器测量的束流波动频率与交流灯丝运行频率相等。交流运行时束流的波动幅度小于7%，与直流运行时处于同一水平。
