NIFS-209

FULL TEXT (PDF, 619 KB)

Author(s):

K. Masai

Title:

Density Dependence of Line Intensities and Application to Plasma Diagnostics

Date of publication:

Feb. 1993

Key words:

excitation, line emission, density dependence

Abstract:

Electron density dependence of spectral lines are discussed in view of application to density diagnostics of plasmas. The dependence arises from competitive level population processes, radiative and collisional transitions from the excited states. Results of the measurement on tokamak plasmas are presented to demonstrate the usefulness of line intensity ratios for density diagnostics. Also general characteristics related to density dependence are discussed with atomic-number scaling for H-like and He-like systems to be helpful for application to higher density plasmas.

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