Validation of collisional radiative modelling of emission line ratios for helium beam plasma diagnostic

S. M. Collis, R. Dall, J. Howard, D. Andruczyk, B. W. James

Research output: Contribution to journalArticlepeer-review

Abstract

A time-dependent collisional radiation model has been used to validate the use of a pulsed helium beam to measure electron temperature profiles in the H-1NF flexible heliac. The diagnostics technique is based on the measurement of helium spectral line ratios which are a strong function of electron temperature while being a weak function of electron density. The validation procedure involves comparing measured and calculated emissivities of spectral lines emitted by helium atoms as a function of position in the beam.

Original languageEnglish (US)
Pages (from-to)340-346
Number of pages7
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume110
Issue number6-7
DOIs
StatePublished - Apr 1 2009
Externally publishedYes

Keywords

  • Collisional radiative model
  • Electron temperature
  • Helium beam
  • Plasma diagnostic

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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