1. Slade J. Jokela, I.V. Veryovkin, A.V. Zinovev
Electron Beam Pulsing
Slade J. Jokela, I.V. Veryovkin, A.V. Zinovev

2. Beam Parameters Approximately 50 to 100 μm diameter 3 ms Pulse
According to factory specifications
3 ms Pulse
Currents from 0.01 to 30.0 μA
Possibly only 8 μA while pulsed
611 μC/cm2 per pulse (100 μm beam radius)

3. Charge Compensation
During normal measurement, more electrons are coming off the sample than are going in
Positive charging of sample
Charge is compensated by applying a +50V bias to the sample, suppressing secondary electron emission
Number of charge compensating pulses is equal to -1, where  is gain.
I need to confirm that this is actually working

4. Results Still testing, but looks promising
8 μA is similar to unpulsed operation
Change in Keithley Voltage Supply (kV scale to V scale)

5. Other Work Received MCP from Qing for CO2 snow cleaning
Aiming for attempt this week
Will finish calibrating pulsed-beam timings and aim to have measurements on new Al2O3 films this week. (Complete series next week).