Inserting stainless steel mesh to prevent stray ions rising from the depths …. cryostat back to VG
few hundred volts might get to the tip
step change in current
phoned VG re cryostat !*!!!?
On monday field emission meeting at Imperial College
studying literature …. effect of He … small field range
Above film was v. out of focus & was useless ….
(schematic !)
Tuesdays expt was not completely successful ……
at this point, the bloody camera was discovered not to be winding on. Oh happy day.