Spectrometer sensitivity calibration in the extreme uv by means of branching ratios of magnetic dipole lines
Relative intensity measurements of various line pairs resulting from magnetic dipole transitions within the configurations s/sup 2/p/sup 2/ and s/sup 2/p/sup 4/, in conjunction with calculated transition probabilities, have been used to determine the wavelength dependence of the sensitivity of a grazing incidence spectrometer, in the range 400 to 1000 A. Emissions from Cr XIX, Fe XXI, Ni XXI and XXIII, Cu XXIV, and Zr XXVII ions in PLT tokamak discharges were used for this purpose. Absolute sensitivity of the spectrometer at selected wavelengths had been determined by the traditional hydrogen, helium, carbon, and oxygen electric-dipole line pairs from the same discharges. Similar attempts to use transitions in the s/sup 2/p/sup 3/ configurations in Cr XVIII, Zr XXVI, and Mo XXVIII ions resulted in significant discrepancies that are ascribed to uncertainties in the corresponding calculated transition probabilities.
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 6959376
- Report Number(s):
- PPPL-2096; ON: DE84010752
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
BRANCHING RATIO
CALIBRATION
CHARGED PARTICLES
CHROMIUM IONS
COPPER IONS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EXTREME ULTRAVIOLET RADIATION
IONS
IRON IONS
MEASURING INSTRUMENTS
MOLYBDENUM IONS
NICKEL IONS
PLT DEVICES
RADIATIONS
SPECTRA
SPECTROMETERS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
ULTRAVIOLET RADIATION
ZIRCONIUM IONS
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
BRANCHING RATIO
CALIBRATION
CHARGED PARTICLES
CHROMIUM IONS
COPPER IONS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
EXTREME ULTRAVIOLET RADIATION
IONS
IRON IONS
MEASURING INSTRUMENTS
MOLYBDENUM IONS
NICKEL IONS
PLT DEVICES
RADIATIONS
SPECTRA
SPECTROMETERS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
ULTRAVIOLET RADIATION
ZIRCONIUM IONS