rem asci2gdf -v -o fields.gdf ..\fields-full.txt z 0.58
gpt -v -o particles.gdf input.in npart=1000 Eu=8e3 freq=200e6 ffac=0.8 rfqfac=0.58
rem gdftrans -o trajectories.gdf particles.gdf time x y z Bx By Bz rxy
rem gdf2a -o particles.txt particles.gdf