Charge-exchange recombination spectroscopy measurements of ion temperature and plasma rotation in PBX Page: 2 of 16
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CHARGE-EXCHANGE RECOMBINATION SPECTROSCOPY
MEASUREMENTS OF ION TEMPERATURE AND PLASMA
ROTATION IN PBX
K.P. Jaehnig, R.J. Fonek, K. Ida and E.T. Powell
Plasma Physics Laboratory, Princeton University
Princeton, New Jersey 08544
The primary diagnostic on PBX for ion temperature measurements is
charge-exchange recombination spectroscopy of low Z ions, wherein fast
neutrals from the heating neutral beams excite spectral lines from highly
excited states (n > 4) of hydrogenic 0, C, and He via charge-exchange
collisions with the respective fully stripped ions. Since the neutral beams
on PB provide relatively low velocity neutrals (i.e., Do beams at 44 keV),
the best signals are obtained using the near-UV lines of 07+(e.g., n = 6-7,
2976 A). off-line analysis of the Doppler broadened and shifted line profiles
includes non-linear least squares fitting to a model line. profile, while a
simplified on-line fast analysis code permits between-shot data analysis.
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Jaehnig, K.P.; Fonck, R.J.; Ida, K. & Powell, E.T. Charge-exchange recombination spectroscopy measurements of ion temperature and plasma rotation in PBX, report, November 1, 1984; New Jersey. (https://digital.library.unt.edu/ark:/67531/metadc1111268/m1/2/: accessed April 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.