SPRED spectrograph upgrade [electronic resource] : high resolution grating and improved absolute calibrations.
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| Online Access: |
Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Princeton, N.J. : Oak Ridge, Tenn. :
Princeton University. Plasma Physics Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1986.
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| Subjects: |
| Abstract: | Two improvements to the SPRED multichannel VUV spectrographs used on the TFTR and PBX tokamaks have been made: (1) A new 2100-g/mm grating covering the 100 to 320 A region with 0.4 A resolution (FWHM) has been added to the existing 450 g/mm grating (100 to 1100 A with 2 A resolution), and (2) the TFTR SPRED has been absolutely calibrated using synchrotron radiation from the NBS SURF II facility, while the PBX system has been calibrated using conventional branching ratios along with line ratios from charge-exchange-recombination-excited lines. The availability of high resolution spectra in the 100 to 320 A range provides improved measurements of metallic ion emissions and, when the instrument views across a neutral beam as in PBX, allows carbon and oxygen densities to be measured via charge exchange recombination spectroscopy. |
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| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 05/01/1986. "pppl-2339" "DE86011167" Stratton, B.C.; Ida, K.; Fonck, R.J.; Jaehnig, K.P.; Ramsey, A.T. |
| Physical Description: | Pages: 16 : digital, PDF file. |