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Hello,
I am trying to make low energy electrons fly through a uniform electric field. I am using the microelectronics example as a template. This should be able to handle electron energies down to a few eV. If I choose an energy of 1000 eV and a field of 5000 V/m I get a nicely arcing trajectory as shown below:
If further reduce the field to 10 V/m, I get an even sharper angle (see below), whereas I would expect the electron trajectory to be more or less straight and horizontal.
Hello John,
Thankyou for your prompt reply. I tried your suggestion, but it seems not to help. However, I have investigated a little further. I find that by gradually reducing the field and electron energy together, the plot looks exactly the same as the first plot in my first message until I get to 100 eV. At 101 eV, everything looks fine, but at 100 eV, the plot looks as below:
