Extending the Energy Range of a 7 MV Van de Graaff Using Triply-Charged Beams: Applications to Neon and Argon Ions

1 February 1979

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science

Vol. 26 (1) , 1470-1471
https://doi.org/10.1109/tns.1979.4330413

Abstract

With only minor modifications, an RF ion source has been used to produce copious beams of triply-charged ions of neon and argon, thus extending the useful energy range of a CN model Van de Graaff to 21 MeV. Absolute beam current measurements show that beams of ~500 nA can be routinely obtained. Application of these has been made to beam-foil spectroscopy experiments, which also serve to positively identify the beams. The beam intensity is most sensitive to the diameter of the exit canal. It is also necessary to be able to monitor current drawn by the RF oscillator. A pre-selecting magnet filters undesired charge states prior to acceleration.

Keywords

This publication has 4 references indexed in Scilit:

Triply charged argon and neon ion beams from ion beams rf sources
Nuclear Instruments and Methods, 1978
Oscillator strengths of resonance lines in Br(VI), (VII) and Kr(VII), (VIII)
Journal of Quantitative Spectroscopy and Radiative Transfer, 1977
Beam-foil studies of neon below 150 Å
Nuclear Instruments and Methods, 1973
Equilibrium Charge Distributions of C, N, Ar, and Fe in Carbon
Physical Review B, 1969