Abstract

An analysis is made of the errors that arise in line-intensity measurements due to the experimental averaging of the time-varying intensities caused by electron-temperature fluctuations in continuous-plasma sources. These calculations are made both for periodic and for random electron-temperature fluctuations. The errors are dependent on the method of measurement. The possible errors in the monochromator method are usually positive and significant for typical spectral lines and electron temperatures. An alternative method, which is shown to be subject to less error, is to use a polychromator and to measure the average of the instantaneous line-intensity ratio. In either method (but more applicable to the monochromator method) the additional measurement of the root-mean-square value of the intensity ratio gives another set of equations and allows the determination of both the mean electron temperature and the oscillation amplitude or standard deviation for gaussian-noise temperature fluctuations.

© 1971 Optical Society of America

Full Article  |  PDF Article
Related Articles
Fluorescence diagnostics for atmospheric-pressure plasmas using semiconductor lasers

Douglas S. Baer, H. Andrew Chang, and Ronald K. Hanson
J. Opt. Soc. Am. B 9(11) 1968-1978 (1992)

Determination of Line-Widths by Slit-Width Alterations

Murphy L. Dalton
Appl. Opt. 4(5) 603-607 (1965)

Plasma Diagnostics by Spectroscopic Methods

David Robinson and Peter D. Lenn
Appl. Opt. 6(6) 983-1000 (1967)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (18)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription