S. Ishii et al., FORMATION OF RECTILINEARLY WIDE PLASMAS BY A SLOTTED WAVE-GUIDE UNDERELECTRON-CYCLOTRON-RESONANCE, Review of scientific instruments, 67(3), 1996, pp. 997-999
A plasma source was developed for ion implanters capable of irradiatin
g large-area substrates. Microwave discharge is performed by electron
cyclotron resonance (ECR). A rectilinearly wide flux of magnetic induc
tion is formed with two long permanent magnets with oppositely facing
poles. The ECR zone formed inside a vacuum chamber is elongated in the
direction along the pole faces. A waveguide slotted along its E plane
is inserted between the magnets. The long slot radiates microwaves in
to the vacuum chamber through dielectric materials. These materials pl
ay the role of waveguide. Plasmas are uniformly generated in the direc
tion along the slotted waveguide when it is terminated with a short pl
unger. This mechanism is analyzed by calculating radiation patterns of
the slotted waveguide. (C) 1996 American Institute of Physics.