skip to main content

Title: Analysis of electron energy distribution function in the Linac4 H{sup −} source

To understand the Electron Energy Distribution Function (EEDF) in the Radio Frequency Inductively Coupled Plasmas (RF-ICPs) in hydrogen negative ion sources, the detailed analysis of the EEDFs using numerical simulation and the theoretical approach based on Boltzmann equation has been performed. It is shown that the EEDF of RF-ICPs consists of two parts, one is the low energy part which obeys Maxwellian distribution and the other is high energy part deviated from Maxwellian distribution. These simulation results have been confirmed to be reasonable by the analytical approach. The results suggest that it is possible to enhance the dissociation of molecules and the resultant H{sup −} negative ion production by reducing the gas pressure.
Authors:
; ;  [1] ; ;  [2]
  1. Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522 (Japan)
  2. CERN, 1211, Geneva 23 (Switzerland)
Publication Date:
OSTI Identifier:
22482930
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANIONS; BOLTZMANN EQUATION; COMPUTERIZED SIMULATION; DISSOCIATION; DISTRIBUTION FUNCTIONS; ENERGY SPECTRA; HYDROGEN; MOLECULES; PLASMA; RADIOWAVE RADIATION