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Updated: Feb 23, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
Development of cold cathode arc discharge filament based multi-cusp H- ion source
Rajnish Kumar1, Dharmraj V Ghodke1, Vinod K Senecha1
1Ion Source & Diagnostics Section, Proton Linac & Superconducting Cavities Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India.
Abstract:
A cold cathode arc discharge filament based multicusp H- ion source (HNIS) has been developed using an innovative low power igniter system working in a glow discharge regime to achieve a longer lifetime of the filament. This HNIS is cesium-free and its experimental prototype generates a maximum H- ion beam (HNIB) current of 12 mA at 50 keV beam energy in pulse mode with a peak arc power of 27 kW using the triode extraction system. This article presents the results of initial commissioning of the HNIS and steering magnetic field used to separate out the co-extracted electrons from HNIB, verified through experiments and 3-D ion beam simulations.
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