Investigation of the gas discharge ion source three-electrode system for optimum H+ extraction

Authors

  • Jufel S. Hismaña National Institute of Physics, University of the Philippines Diliman
  • Gene Q. Blantocas National Institute of Physics, University of the Philippines Diliman
  • Henry J. Ramos National Institute of Physics, University of the Philippines Diliman

Abstract

Optimization of H+ ion extraction from the GDIS at the Plasma Physics Laboratory without upgrade of peripherals is reported. Discharge, extraction, and focusing potentials of the three-electrode system of the ion source were investigated. Maximum H+ current density of 3.73 nA/mm2 was obtained at 5 mA discharge current, 1250 V discharge voltage, 500 V extraction voltage, and 500 V focusing voltage. This result is 84.65% and 66.52% higher than self-extracted and accelerated beams, respectively. Optimum acceleration voltage is 1250 V. Current density increased as focusing potential was increased. However, due to charge neutralization, minimum dependence of H+ current on extraction voltage was observed.

SPP 2006 Proceedings Cover

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Published

2006-10-25

Issue

2006: Proceedings of the 24th Samahang Pisika ng Pilipinas National Physics Congress

Section

Poster Session PA

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All other associated economic and moral rights as granted by the Intellectual Property Code of the Philippines are maintained by the Authors.

How to Cite

[1]
“Investigation of the gas discharge ion source three-electrode system for optimum H+ extraction”, Proc. SPP, vol. 24, no. 1, p. SPP-2006-PA-13, Oct. 2006, Accessed: Mar. 31, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2006-PA-13