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

Authors

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

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Issue

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

Article ID

SPP-2006-PA-13

Section

Poster Session PA

Published

2006-10-25

How to Cite

[1]

JS Hismaña, GQ Blantocas, and HJ Ramos, Investigation of the gas discharge ion source three-electrode system for optimum H+ extraction, Proceedings of the Samahang Pisika ng Pilipinas 24, SPP-2006-PA-13 (2006). URL: https://proceedings.spp-online.org/article/view/SPP-2006-PA-13.