L
L. R. Grisham
Publications - 2
Citations - 76
L. R. Grisham is an academic researcher. The author has contributed to research in topics: Ion & Beam divergence. The author has an hindex of 2, co-authored 2 publications receiving 74 citations.
Papers
More filters
Journal ArticleDOI
Effect of emission aperture shape upon ion optics
TL;DR: Several different axisymmetric aperture shapes have been studied, experimentally and theoretically, for use in the plasma electrode employed in extracting ions from a plasma, and the minimum half-width-half-maximum divergence obtained for the former class was 0.57° at a beam energy of 27 kV, as compared to 1° obtained for a conventional cylindrical bore aperture as mentioned in this paper.
Journal ArticleDOI
Effect of preacceleration voltage upon ion‐beam divergence
TL;DR: In this paper, the effect of an insulator coating on the plasma electrode of a duoPIGatron ion source on ion beam optics was examined theoretically and experimentally, and it was shown that this electrode arrangement with precel gave a much lower beam divergence than the same arrangement without precel.