Dielectronic satellite spectra of hydrogen-like titanium (Ti XXII)

Technical Report · Fri Jul 01 04:00:00 EDT 1983

DOI:https://doi.org/10.2172/5589272· OSTI ID:5589272

Bitter, M.; von Goeler, S.; Cohen, S.; Hill, K. W.; Sesnic, S.; Tenney, F.; Timberlake, J.; Safronova, U. I.; Vainshtein, L. A.; Dubau, J.

High resolution spectra of the Ly ..cap alpha../sub 1/ and Ly ..cap alpha../sub 2/ lines of hydrogenlike titanium, TiXXII, and the associated dielectronic satellites which are due to transitions 1snl-2pnl with n greater than or equal to 2, have been observed from tokamak discharges with auxiliary ion cyclotron heating (ICRH) with central electron temperatures of 2 keV and central electron densities of 8 x 10/sup 13/ cm/sup -3/ on the Princeton Large Torus (PLT). The data have been used for a detailed comparison with theoretical predictions based on the Z - expansion method and Hartree - Fock calculations. The results obtained with the Z - expansion method are in excellent agreement with the observed spectral data except for minor discrepancies between the theoretical and experimental wavelengths of 0.0003 A for the n = 2 satellites and of 0.0001 A for the separation of the Ly ..cap alpha../sub 1/ and Ly ..cap alpha../sub 2/ lines. Very good agreement with the experimental data is also obtained for the results from the Hartree - Fock calculations though somewhat larger discrepancies (approx. = 0.0009 A) exist between experimental and theoretical wavelengths which are systematically too small. The observed spectra are used for diagnosis of the central ion and electron temperatures of the PLT discharges and for a measurement of the dielectronic recombination rate coefficient of TiXXII.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5589272
• Report Number(s): PPPL-2021; ON: DE83017984
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CHARGED PARTICLES
ELECTRON TEMPERATURE
EMISSION SPECTRA
HARTREE-FOCK METHOD
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
ION TEMPERATURE
IONS
LYMAN LINES
PLASMA DIAGNOSTICS
PLASMA HEATING
PLT DEVICES
SPECTRA
THERMONUCLEAR REACTORS
TITANIUM IONS
TOKAMAK TYPE REACTORS