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User name Nilanga
Log entry time 10:46:29 on October29,2008
Entry number 245333
keyword=beam spot on BeO
There seems to be a saturation effect of beam on BeO, when the beam is above 1 muA with no raster, a large aera on the target glows, but harps show that the beam is norrow and focused. Also we notice a glow along the cross hairs on the target; this seems to be an optical effect.