Plasma and beam diagnostic methods for high-current-density negative ion sources are
reviewed. The pulse laser–induced photodetachment method was widely used to measure …

H− ions formed by volume processes are extracted from a multicusp ion source. It is shown
that a permanent magnet filter together with a small positive bias voltage on the plasma grid …

The development of a microcomputer‐controlled electrostatic probe as a diagnostic
technique is described. The technique uses cylindrical probes and the definitive theory of …

Excitation coefficients for the production of vibrationally exicted D2 by low energy electrons
have been determined from measurements of the intensity of infrared emission from …

Coherent anti‐Stokes Raman scattering is applied to the study of rovibrational populations
in magnetic multicusp H2 and D2 discharges. This subject is of interest to negative hydrogen …

An optimized tandem two-chamber negative-ion source system is discussed. In the first
chamber high-energy (E> 20 eV) electron collisions provide for H2 vibrational excitation …

Using a local-width resonant model, the cross sections for dissociative attachment of low-
energy electrons to a rovibrationally excited H 2 molecule in its ground electronic state are …

A self-consistent approach based on the simultaneous solution of the vibrational master
equation, the Boltzmann equation and the plasma chemistry describing the dissociation …

Plasma parameter measurements for negative hydrogen (H−) ion sources have been
playing an important role in clarifying fundamental physics related to negative ion production …

The H2 (v ″) vibrational distribution observed in a medium‐density hydrogen discharge is
analyzed in terms of standard collisional processes. All processes in the model are specified …