Charge-exchange recombination spectroscopy measurements of ion temperature and plasma rotation in PBX

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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 greater than or equal to 4) of hydrogenic 0, C, and He via charge-exchange collisions with the respective fully stripped ions. Since the neutral beams on PBX provide relatively low velocity neutrals (i.e., D/sup 0/ beams at 44 keV), the best signals are obtained using the near-uv lines of 0/sup 7 +/ (e.g., n = 8-7, 2976 A). Off-line analysis of the Doppler broadened and shifted line ... continued below

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Pages: 17

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Jaehnig, K.P.; Fonck, R.J.; Ida, K. & Powell, E.T. November 1, 1984.

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Description

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 greater than or equal to 4) of hydrogenic 0, C, and He via charge-exchange collisions with the respective fully stripped ions. Since the neutral beams on PBX provide relatively low velocity neutrals (i.e., D/sup 0/ beams at 44 keV), the best signals are obtained using the near-uv lines of 0/sup 7 +/ (e.g., n = 8-7, 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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Pages: 17

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NTIS, PC A 02/MF A01.

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  • Other: DE85003709
  • Report No.: PPPL-2172
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/6187523 | External Link
  • Office of Scientific & Technical Information Report Number: 6187523
  • Archival Resource Key: ark:/67531/metadc1111268

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Creation Date

  • November 1, 1984

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

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  • May 11, 2018, 2:52 p.m.

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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/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.