Numerical simulation of cesium cooling effects in H- ion source

T. Morishita, M. Ogasawara, A. Hatayama

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Cesium volume reactions are included in a two-point model numerical code for a high power hydrogen negative ion source. The energy balance equation for the electron temperature and rate equations of Cs and Cs+ are included in our code to investigate the electron cooling and volume effects by cesium seeding. Cesium density in the ion source is taken as a variable for the calculation. Cesium is ionized over 95% in the driver region of the ion source. The electron temperature begins to decrease at cesium density 1011 cm-3 and the electron density increases because of the ionization of cesium.

Original languageEnglish
Pages (from-to)880-882
Number of pages3
JournalReview of Scientific Instruments
Volume71
Issue number2 II
Publication statusPublished - 2000 Feb 1

ASJC Scopus subject areas

  • Instrumentation

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