
TY  - JOUR
A1  - Hollway, DL 
T1  - The Optinium Space-Charge-Controlled Focus of an Electron Beam
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1952
VL  - 5
IS  - 3
SP  - 430
EP  - 436
KW  - 
UR  - https://doi.org/10.1071/CH9520430 
N2  - The problem of apace-charge defocusing of circular electron beams is considered. and expressions for the condition of optimum focus are derived from the equations of the beam profile.   It is shown that, over a wide range of spot radii, the optimum-focus expressions may be replaced by much simpler relationships suited to electron-beam design problems. 
ER  -

