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.

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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.