We have developed a new magnetic monocusp ion source for single apertu
re applications such as neutron generators. Coupling solenoidal magnet
ic fields on both sides of a monocusp magnetic field has generated ove
r 70% atomic deuterium ions at pressures as low as 0.4 Pa (3 mTorr). T
his article describes the performance and characteristics of the solen
oidal and monocusp ion source. (C) 1996 American Institute of Physics.