Actions for METHOD OF MEASURING TIME RESOLVED ELECTRON DENSITY AND ION TEMPERATURE OF PLASMAS WITH A FABRY-PEROT ETALON. Rtjnhuizen Report No. 64-17.

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METHOD OF MEASURING TIME RESOLVED ELECTRON DENSITY AND ION TEMPERATURE OF PLASMAS WITH A FABRY-PEROT ETALON. Rtjnhuizen Report No. 64-17.

Author
Mewe, R.
Published
[Place of publication not identified] : [publisher not identified], 1964.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1964.
Physical Description
microfiche : negative ; 8 x 13 cm
Additional Creators
Frost, Richard, M.A.

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Summary
Electron density and ion temperatures in the regions 10/sup 14/-- 10/sup 16/ cm/sup -3/ and 10/sup 5/-- 10/sup 8 deg K respectively can be obtained from the Stark and Doppler broadening of spectral lines. Measurements can be performed with a Fabry-Perot etalon which has spacers of thickness less than 1 mm. A simple method is presented for obtaining the time-resolved haifwidth of spectral lines with a time resolution better than 0.1 mu sec during a scan of about 10 mu sec. From the ratio of the minimum and the maximum intensity in the Haidinger pattern, the true half-width of a spectral line can be determined, assuming the spectral line has a Voigt profile. As an example the profiles of the Balmer lines H/sub BETA / and H/sub delta / and of He II lambda 3203 according to the Griem-Kolb-Shen theory, are approximated by Voigt profiles for several ion temperatures. From the full half-width of these profiles the electron density can be obtained. (auth)
Report Numbers
NP-13853
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
NSA number: NSA-18-021384
OSTI Identifier 4006576
Research organization: Stichting Voor Fundamenteel Onderzoek der Materie. Instituut Voor Piasma-Fysica, Jutphaas, Netherlands.
View MARC record | catkey: 41357097